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The emergence of the severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) stands for being the most serious epidemic (so far) of the 21st century. However, only a few computational studies have investigated the molecular mechanisms underlying the neutralization of the spike protein by antibodies of different classes. Hence, bioinformatic methods were employed to unravel the factors contributing to the remarkable neutralization capacity exhibited by specific antibodies. Initially, crystallographic structures of IgA monomeric / dimeric, IgG, and IgM antibodies binding with the receptor-binding domain region of the SARS-CoV-2 spike protein were retrieved. Subsequently, rigid molecular docking and molecular dynamic simulations were performed over 100 ns with explicit water solvation. Lastly, an energy decomposition was conducted to estimate the binding affinity using the last frames from molecular dynamics. The results revealed a higher binding affinity for both monomeric and dimeric forms of IgA antibodies against the spike protein. Additionally, a greater number of hydrogen bonds were observed during their interaction with the spike protein, as well as greater structural instability along the time and especially a more thermodynamically favorable interaction affinity. In this way, the research contributes a small piece to the complex puzzle of understanding the humoral immune response induced by the SARS-CoV-2 virus. SARSCoV2 SARSCoV SARS CoV (SARS-CoV-2 so far st century However classes Hence Initially IgG receptorbinding receptor SARS-CoV- retrieved Subsequently 10 solvation Lastly dynamics Additionally way virus (SARS-CoV- SARS-CoV 1 (SARS-CoV

https://doi.org/10.21577/0103-5053.20240157

Exogenous application of melatonin mitigates salt stress in soybean
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Oliveira, Pablo H. de A.

; Sá, Sarah A. de

; Ribeiro, João E. da S.

; Silva, Jéssica P. P. da

; Lima, Francismária F. de

; Silva, Ilmara B. M.

; Silveira, Lindomar M. da

; Barros Júnior, Aurélio P.

Revista Caatinga

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2025, Volume 38 elocation e12698

Abstract: Pt En | Text: Pt En | PDF: Pt | PDF: En

RESUMO A salinidade é um fator abiótico que prejudica o crescimento e os mecanismos fisiológicos, bioquímicos e moleculares das plantas. Entre as plantas, a soja é uma cultura importante mundialmente, portanto, o manejo de fatores abióticos é essencial para mitigar os danos às plantas. No entanto, bioestimulantes, como a melatonina, estão sendo usados para aliviar o estresse causado por esses fatores. Portanto, este estudo teve como objetivo avaliar o crescimento, os pigmentos fotossintéticos e as relações hídricas de plantas de soja aplicadas a níveis de salinidade e aplicação exógena de melatonina. A pesquisa foi realizada em área experimental pertencente à Universidade Federal Rural do SemiÁrido, Mossoró, RN, Brasil. O delineamento experimental foi em blocos casualizados, arranjados em esquema fatorial 3 x 3 (três níveis de salinidade na água de irrigação - 0.50, 3.00 e 5.00 dS m-1 e três concentrações de melatonina - 0, 0.5 e 1 mM), com três repetições. Aos 47 dias após o plantio, foram avaliados a altura da planta, diâmetro do caule, número de folhas, comprimento radicular, teor de clorofila (a, b e total), conteúdo relativo de água, umidade foliar e extravasamento de eletrólitos. As plantas de soja toleraram os efeitos da salinidade nos aspectos de crescimento, nos pigmentos fotossintéticos e nas relações hídricas até 3,00 dS m-1, independentemente da concentração de melatonina. A aplicação exógena de melatonina mitigou os efeitos do estresse salino na clorofila b e no conteúdo relativo de água, no nível de salinidade de 5.00 dS m-1 e concentração de 1 mM. fisiológicos mundialmente portanto entanto bioestimulantes Portanto SemiÁrido Mossoró RN Brasil casualizados 050 0 50 0.50 300 00 3.0 500 5 5.0 m1 m m- 05 0. mM, mM , mM) repetições 4 plantio planta caule folhas radicular a, (a total, total total) eletrólitos 3,0 m1, 1, 30 3. 5. 3,

ABSTRACT Salinity is an abiotic factor that impairs the growth and physiological, biochemical, and molecular mechanisms of plants. Among plants, soybeans are an important crop worldwide, so managing abiotic factors is essential to mitigate plant damage. However, biostimulants, such as melatonin, are being employed to alleviate the stress caused by these factors. Therefore, this study aimed to evaluate the growth, photosynthetic pigments, and water relations of soybean plants subjected to salinity levels and exogenous melatonin application. The research was conducted in experimental area belonging to the Federal Rural University of the Semi-Arid Region, Mossoró, RN, Brazil. The experimental design was randomized blocks, arranged in a 3 x 3 factorial scheme (three salinity levels in the irrigation water - 0.50, 3.00, and 5.00 dS m-1 and three melatonin concentrations - 0, 0.5, and 1 mM) with three replications. At 47 days after planting, plant height, stem diameter, number of leaves, root length, chlorophyll content (a, b, and total), relative water content, leaf moisture, and electrolyte leakage were evaluated. Soybean plants tolerated the effects of salinity on growth aspects, photosynthetic pigments, and water relations up to 3.00 dS m-1, regardless of melatonin concentration. Exogenous application of melatonin mitigated the effects of salt stress on chlorophyll b and relative water content at salinity level of 5.00 dS m-1 and concentration of 1 mM. physiological biochemical worldwide damage However biostimulants Therefore pigments SemiArid Semi Arid Region Mossoró RN Brazil blocks 050 0 50 0.50 300 00 500 5 5.0 m1 m m- 05 0.5 mM replications 4 planting height diameter leaves length a, (a total, total , total) moisture evaluated aspects 3.0 m1, 1, 30 5. 0. 3.

https://doi.org/10.1590/1983-21252025v3812698rc

Cattle manure and humic substances stimulate morphophysiological and nutritional processes in pepper plants
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Silva, Ramon F. da

; Dias, Thiago J.

; Dias, Bruno de O.

; Silva, Toshik I. da

; Alves, Júlio C. G.

; Silva, Rogério F. da

; Bezerra, Ana C.

; Silva, João H. B. da

; Nascimento, Marlene P. do

; Lopes, Adriano S.

; Silva, Adjair J. da

; Nascimento, Rodolpho J. de A.

Revista Brasileira de Engenharia Agrícola e Ambiental

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apr 2024, Volume 28 N. 4 elocation e278898

Abstract: Pt En | Text: Pt En | PDF: Pt | PDF: En

RESUMO As espécies do gênero Capsicum, principalmente pimentão, possuem grande relevância econômica e são amplamente consumidas em todo o mundo. A aplicação de dejetos animais como fertilizante orgânico é uma técnica simples e barata de distribuição de nutrientes ao solo. O esterco bovino em associação com substâncias húmicas pode estimular o metabolismo das plantas, resultando no aumento da absorção e assimilação de nutrientes. Portanto, o objetivo neste estudo foi avaliar doses de esterco bovino associado a substâncias húmicas para estimular o metabolismo vegetal, a morfofisiologia e a nutrição em pimentões. O delineamento utilizado foi em blocos casualizados, distribuídos em arranjo fatorial 4 x 3, referente a quatro doses de esterco bovino (8, 18, 28 e 38 t ha-1) e três doses de substâncias húmicas (0, 8 e 12 kg ha-1), com quatro repetições. Substâncias húmicas (12 kg ha-1) estimularam as trocas gasosas, aumentando a fotossíntese líquida (34,2%), a condutância estomática (12,7%), a eficiência instantânea do uso da água (15,87%), a eficiência instantânea de carboxilação (37,37%) e a eficiência efetiva da absorção conversão de energia (23,53%). O esterco bovino supriu adequadamente as necessidades nutricionais da cultura, enquanto as substâncias húmicas aumentaram o número e a espessura dos pelos radiculares do pimentão. A combinação de manejo mais eficaz para aumentar a atividade fotossintética em pimentões é 38 t ha-1 de esterco combinado com 8 kg ha-1 de substâncias húmicas. As substâncias húmicas estimularam respostas morfofisiológicas positivas no cultivo de pimentão orgânico, o que resultou no aumento da produção. Capsicum mundo solo plantas Portanto vegetal casualizados 3 8, (8 18 2 ha1 ha 1 0, 0 (0 ha1, , repetições (1 gasosas 34,2%, 342 34,2% 34 (34,2%) 12,7%, 127 12,7% 7 (12,7%) 15,87%, 1587 15,87% 15 87 (15,87%) 37,37% 3737 37 (37,37% 23,53%. 2353 23,53% . 23 53 (23,53%) cultura ha- produção ( 34,2 (34,2% 12,7 (12,7% 158 15,87 (15,87% 37,37 373 (37,37 235 23,53 5 (23,53% 34, (34,2 12, (12,7 15,8 (15,87 37,3 (37,3 23,5 (23,53 (34, (12, 15, (15,8 37, (37, 23, (23,5 (34 (15, (37 (23, (3 (15 (23 (2

ABSTRACT Species of the genus Capsicum, especially peppers, are economically important and widely consumed worldwide. The application of animal waste as organic fertilizer is a simple and cost-effective technique for applying nutrients to the soil. Combining cattle manure with humic substances can stimulate plant metabolism, resulting in increased nutrient absorption and assimilation. Therefore, the objective in this study was to evaluate doses of cattle manure combined with humic substances for stimulating plant metabolism and morphophysiological and nutritional processes in pepper plants. A randomized block design with four replicates was used, in a 4×3 factorial arrangement consisting of four cattle manure doses (8, 18, 28, and 38 Mg ha-1) and three humic substance doses (0, 8, and 12 kg ha-1). Humic substances (12 kg ha-1) enhanced gas exchange, increasing net photosynthesis (34.2%), stomatal conductance (12.7%), instantaneous water use efficiency (15.87%), instantaneous carboxylation efficiency (37.37%), and absorbed energy conversion efficiency (23.53%). Cattle manure adequately met the crop’s nutritional requirements, while humic substances increased the number and thickness of plant root hairs. The most effective combination to increase photosynthetic activity in pepper plants was 38 Mg ha-1 of cattle manure combined with 8 kg ha-1 of humic substances. Humic substances stimulated positive morphophysiological responses in organic pepper crops, which resulted in increased production. Capsicum peppers worldwide costeffective cost soil assimilation Therefore used 43 4 3 4× (8 18 28 ha1 ha 1 0, 0 (0 ha1. . (1 exchange 34.2%, 342 34.2% , 34 2 (34.2%) 12.7%, 127 12.7% 7 (12.7%) 15.87%, 1587 15.87% 15 87 (15.87%) 37.37%, 3737 37.37% 37 (37.37%) 23.53%. 2353 23.53% 23 53 (23.53%) crops crop s requirements hairs ha- production ( 34.2 (34.2% 12.7 (12.7% 158 15.87 (15.87% 373 37.37 (37.37% 235 23.53 5 (23.53% 34. (34.2 12. (12.7 15.8 (15.87 37.3 (37.37 23.5 (23.53 (34. (12. 15. (15.8 37. (37.3 23. (23.5 (34 (15. (37. (23. (3 (15 (37 (23 (2

https://doi.org/10.1590/1807-1929/agriambi.v28n4e278898

Salicylic acid reduces harmful effects of salt stress in Tropaeolum majus
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Silva, João H. B. da

; Silva, Adjair J. da

; Silva, Toshik I. da

; Henschel, Juliane M.

; Lopes, Adriano S.

; Alves, Júlio C. G.

; Silva, Ramon F. da

; Araújo, Daniele B.

; Santos, João P. de O.

; Martins, Arthur H. P. da C.

; Nascimento, Marlene P. do

; Leal, Márcia P. da S.

; Rego, Mailson M. do

; Dias, Thiago J.

Revista Brasileira de Engenharia Agrícola e Ambiental

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apr 2024, Volume 28 N. 4 elocation e278566

Abstract: Pt En | Text: Pt En | PDF: Pt | PDF: En

RESUMO O estresse salino limita o crescimento e a fisiologia da capuchinha (Tropaeolum majus), devido a distúrbios bioquímicos, fisiológicos e anatômicos. A aplicação de ácido salicílico é uma alternativa para mitigar os efeitos prejudiciais do estresse salino, no entanto, em capuchinha os estudos são escassos. Assim, objetivou-se avaliar os efeitos da aplicação de ácido salicílico via foliar em capuchinha cultivada sob estresse salino. O experimento foi realizado em delineamento inteiramente casualizado, em esquema fatorial 3 x 3, referente a 0 (sem estresse) 50 (estresse salino moderado) e 100 (estresse salino severo) mM de NaCl e aplicação de 0, 0,5 e 1 mM de ácido salicílico, com seis repetições. O crescimento (altura de planta, diâmetro do caule e número de folhas), trocas gasosas (condutância estomática, fotossíntese, transpiração, concentração interna de CO2, eficiência intrínseca do uso da água, eficiência instantânea do uso da água e eficiência intrínseca de carboxilação) e os índices de clorofila e fluorescência da clorofila a foram avaliados. O estresse salino afetou as variáveis analisadas neste estudo. A aplicação de ácido salicílico teve um efeito positivo na mitigação dos efeitos do estresse salino severo, resultando em um aumento significativo no número de folhas, sendo a dose mais eficaz a concentração de 1 mM, levando ainda, a melhorias notáveis na eficiência no uso da água e na eficiência fotoquímica. No entanto, as demais combinações de salinidade e ácido salicílico reduziram o crescimento e as trocas gasosas nas plantas de capuchinha. Tropaeolum majus, majus , majus) bioquímicos anatômicos entanto escassos Assim objetivouse objetivou se casualizado sem 5 moderado 10 severo 05 repetições altura planta folhas folhas) condutância estomática fotossíntese transpiração CO2 CO carboxilação avaliados estudo ainda fotoquímica

ABSTRACT Salt stress hampers the growth and physiology of nasturtium (Tropaeolum majus), due to biochemical, physiological, and anatomical disruptions. The application of salicylic acid stands as an alternative to alleviate the detrimental effects of salt stress, but studies on nasturtium are scarce. Thus, the aim of present study was to assess the effects of foliar application of salicylic acid on nasturtium cultivated under salt stress. The experiment followed a completely randomized design in a 3 x 3 factorial scheme, with 0 (no stress), 50 (moderate salt stress), and 100 (severe salt stress) mM of NaCl, and application of 0, 0.5, and 1 mM of salicylic acid, each with six replications. Growth (plant height, stem diameter, and number of leaves), gas exchange (stomatal conductance, photosynthesis, transpiration, internal CO2 concentration, intrinsic water use efficiency, instantaneous water use efficiency, and intrinsic carboxylation efficiency), as well as chlorophyll indices and chlorophyll a fluorescence were evaluated. Salt stress affected the variables analyzed in this study. The application of salicylic acid had a positive effect on mitigating the effects of severe salt stress, resulting in a significant increase in the number of leaves. The most effective dose was 1 mM, also leading to notable improvements in water use efficiency and photochemical efficiency. However, other combinations of salinity and salicylic acid reduced growth and gas exchange in nasturtium plants. Tropaeolum majus, majus , majus) biochemical physiological disruptions scarce Thus scheme no 5 moderate 10 NaCl 05 0.5 replications plant height diameter leaves, leaves leaves) stomatal conductance photosynthesis transpiration CO concentration efficiency) evaluated However plants 0.

https://doi.org/10.1590/1807-1929/agriambi.v28n4e278566

Co-feeding period on the survival and growth of larvae (Botia lohachata) during the feeding transition Cofeeding Co Botia lohachata
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Fosse, Paulo José

; Mattos, Douglas da Cruz

; Fosse Filho, João Carlos

; Cardoso, Leonardo Demier

; Radael, Marcella Costa

; Silva, Maria Aparecida da

; Vidal Junior, Manuel Vazquez

Ciência Rural

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2024, Volume 54 N. 3 elocation e20220642

Abstract: Pt En | Text: Pt En | PDF: Pt | PDF: En

RESUMO: Este estudo teve como objetivo avaliar o efeito do período de co-alimentação (C) no crescimento e sobrevivência de larvas da espécie ornamental Botia lohachata durante o período de desmame de alimento vivo (LF) para alimento inerte (IF). Os reprodutores foram submetidos à desova induzida com homogeneizado de hipófise. Foram utilizadas 2.400 larvas com peso inicial médio de 0,39 ± 0,09 mg e comprimento total médio de 4,08 ± 0,21 mm, de um único casal reprodutor. O alimento vivo foi náuplios recém-eclodidos de Artemia franciscana, e a dieta inerte foi uma ração comercial com 55% de proteína bruta e dois tamanhos de partículas (142-350 µm e 350-500 µm). Como primeiro alimento, todas as larvas receberam A. franciscana durante os primeiros seis dias, exceto os grupos jejum (NC) e alimento inerte (IF). As seguintes estratégias de co-alimentação foram empregadas: C4 = 4 dias de co-alimentação, C8 = 8 dias de co-alimentação, C12 = 12 dias de co-alimentação e LF = Artemia durante todo o período experimental. O maior período com alimento vivo promoveu melhores taxas de crescimento larval. A taxa de crescimento específico das larvas alimentadas com ração viva durante todo o período (LF) foi maior que a dos demais grupos, seguida das estratégias de co-alimentação. Não houve efeito (P > 0,01) na sobrevivência larval nos grupos LF, C12, C8 e C4, que variou de 41% a 53% após 30 dias. O tratamento IN resultou em alta mortalidade e baixo crescimento, sugerindo que o alimento vivo deve ser a primeira fonte de alimento para as larvas de B. lohachata. RESUMO coalimentação co alimentação C (C (LF IF. IF . (IF) hipófise 2400 2 400 2.40 039 0 39 0,3 009 09 0,0 408 08 4,0 021 21 0,2 mm reprodutor recémeclodidos recém eclodidos 55 142350 142 350 (142-35 350500 500 350-50 µm. µm) NC (NC empregadas coalimentação, alimentação, C1 1 experimental coalimentação. alimentação. P 0,01 001 01 41 53 3 B (IF 240 40 2.4 03 0, 00 4, 02 5 14235 14 35 (142-3 35050 50 350-5 24 2. 1423 (142- 3505 350- (142 (14 (1 (

ABSTRACT: This study evaluated the effect of the co-feeding (C) period on the growth and survival of larvae of the yo-yo loach Botia lohachata ornamental species during the weaning period from live food (LF) to inert food (IF). The breeders were subjected to induced spawning using crude pituitary homogenate. A total of 2,400 larvae were used with an average initial weight of 0.39 ± 0.09 mg and an average total length of 4.08 ± 0.21 mm, from a single breeding pair. The live food was newly hatched nauplii of Artemia franciscana, and the inert diet was a commercial ration with 55% crude protein and two particle sizes (142-350 µm and 350-500 µm). As the first food, all larvae received A. franciscana during the first six days, except for the fasting (NC) and inert food (IF) groups. The following co-feeding strategies were employed: C4 = 4 days of co-feeding, C8 = 8 days of co-feeding, C12 = 12 days of co-feeding, and LF = Artemia during the entire experimental period. The longest period with live food promoted better larval growth rates. The specific growth rate of larvae fed live food during the entire period (LF) was higher than that of the other groups, followed by the co-feeding strategies. There was no effect (P > 0.01) on larval survival in the LF, C12, C8, and C4 groups, which ranged from 41% to 53% after 30 days. Treatment R resulted in high mortality and low growth, suggesting that live food should be the first food source for B. lohachata larvae. ABSTRACT cofeeding co feeding C (C yoyo yo (LF IF. IF . homogenate 2400 2 400 2,40 039 0 39 0.3 009 09 0.0 408 08 4.0 021 21 0.2 mm pair 55 142350 142 350 (142-35 350500 500 350-50 µm. µm) NC (NC (IF groups employed cofeeding, feeding, C1 1 rates P 0.01 001 01 41 53 3 B 240 40 2,4 03 0. 00 4. 02 5 14235 14 35 (142-3 35050 50 350-5 24 2, 1423 (142- 3505 350- (142 (14 (1 (

https://doi.org/10.1590/0103-8478cr20220642

Continuous and pulse fertigation on the accumulation and export of nutrients by cowpea
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Souza, Carolayne S. de

; Silva, Gerônimo F. da

; Costa, Maria V. G. da

; Silva, Manassés M. da

; Silva, João V. B. da

; Menezes, Sirleide M. de

; Costa, Antônio F. da

; Diniz, Adriana A.

Revista Caatinga

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2024, Volume 37 elocation e11818

Abstract: Pt En | Text: Pt En | PDF: Pt | PDF: En

RESUMO Objetivou-se avaliar o efeito da fertirrigação pulsada e contínua sobre o acúmulo e a exportação de nutrientes pelo feijãocaupi. O delineamento experimental adotado foi em blocos ao acaso com 12 tratamentos distribuídos em esquema fatorial 5 x 2+ 2, com quatro repetições, sendo cinco lâminas de reposição da ETc equivalentes (40, 60, 80, 100 e 120%), combinadas com dois tipos de aplicação de fertirrigação (pulsada e contínua), mais dois tratamentos adicionais os quais foram irrigados com lâmina de 100% da ETc de forma pulsada e contínua e adubado convencionalmente. Os nutrientes analisados foram N, P, K, Ca, Mg, S, Fe, Cu, Mn e Zn. Os maiores acúmulos e exportações de nutrientes foram obtidos com lâminas de fertirrigação pulsada menores que 100% da ETc. O tratamento que recebeu adubação convencional e irrigação pulsada com lâmina de 100% da ETc promoveu maiores acúmulos e exportação de nutrientes em detrimento da irrigação contínua. A ordem decrescente de acúmulo de nutrientes para ambos os tipos de aplicação da fertirrigação (pulsada e contínua) foi: N > K > Ca > P > Mg > S > Fe > Mn > Zn > Cu. A ordem decrescente de exportação de nutrientes pelas vagens e grãos do feijão-caupi, para aplicação da fertirrigação pulsada foi: N > P > Ca > K > Mg > S > Fe > Zn > Mn > Cu. Já a aplicação da fertirrigação contínua foi: N > P > Ca > Mg > S> K> Fe > Zn > Mn > Cu. Objetivouse Objetivou se feijãocaupi 1 2 repetições 40, 40 (40 60 80 10 120%, 120 120% , 120%) contínua, convencionalmente Cu feijãocaupi, feijão caupi, caupi feijão-caupi 4 (4 6 8 (

ABSTRACT The objective was to evaluate the effects of pulse and continuous fertigation on the accumulation and export of nutrients by cowpea. The experimental design adopted was randomized blocks with 12 treatments distributed in a 5 x 2 + 2 factorial scheme, with four replicates, with five ETc replacement depths (40, 60, 80, 100 and 120%), combined with two types of fertigation application (pulse and continuous), plus two additional treatments under pulse (control 1) and continuous (control 2) irrigation with 100% ETc depth and conventional fertilization. The analyzed nutrients were N, P, K, Ca, Mg, S, Fe, Cu, Mn and Zn. Highest accumulations and exports of nutrients were obtained with pulse fertigation depths lower than 100% ETc. Conventional fertilization and pulse irrigation with 100% ETc depth promoted greater accumulation and export of nutrients compared to continuous irrigation. The descending order of nutrient accumulation for both types of fertigation application (pulse and continuous) was: N > K > Ca > P > Mg > S > Fe > Mn > Zn > Cu. The descending order of nutrient export by cowpea pods and grains was N > P > Ca > K > Mg > S > Fe > Zn > Mn > Cu for pulse fertigation and N > P > Ca > Mg > S > K > Fe > Zn > Mn > Cu for continuous fertigation. 1 scheme replicates 40, 40 (40 60 80 10 120%, 120 120% , 120%) continuous, control 4 (4 6 8 (

https://doi.org/10.1590/1983-21252024v3711818rc

Biodegradation of the Antibiotic Doxycycline by Bacteria from the Gastrointestinal Tract of Cucurbit Beetles (Diabrotica speciosa) Diabrotica speciosa
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Madera, Karen Susana M.

; Durango, Luis Guillermo C.

; Martínez, Orfa Ines C.

; Silva, Maria Fátima G. F. da

; Fernandes, João B.

; Forim, Moacir R.

Journal of the Brazilian Chemical Society

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2024, Volume 35 N. 5 elocation e-20230183

Abstract: En | Text: En | PDF: En

Antibiotics can contaminate the environment as a result of improper disposal. The induction of doxycycline in the environment could give rise to lineages of the cucurbit beetle Diabrotica speciosa containing resistant endosymbiotic microorganisms, giving rise to bacterial strains capable of biodegrading these antibiotic residues. This work determined the relationship between the intestinal microbiota of D. speciosa and its ability to biodegrade an antibiotic. Bacterial strains of Enterobacter cloacae and Stenotrophomonas maltophila isolated from the gastrointestinal tract of D. speciosa were evaluated for the biodegradation of doxycycline. An analytical method for the extraction and quantification of doxycycline by high-efficiency liquid chromatography-ultraviolet detection (HPLC-UV) was developed and applied to monitor the biodegradation rates during bacterial growth for nutrient and nutrient-deficient media, both supplemented with the antibiotic. Degradation kinetics showed a decrease in antibiotic concentration after 96 h in saline medium, with recoveries of 63.1 and 87.7% for E. cloacae and S. maltophilia, respectively. Two degradation products were then identified and characterized from the liquid chromatography-high resolution mass spectrometry data after bioassays with E. cloacae. The gastrointestinal tract of insects such as D. speciosa can be a source of useful microbes for biotechnological processes such as the biodegradation of exogenous organic compounds in the environment. disposal microorganisms residues D highefficiency high efficiency chromatographyultraviolet chromatography ultraviolet HPLCUV HPLC UV (HPLC-UV nutrientdeficient deficient media 9 medium 631 63 1 63. 877 87 7 87.7 E S maltophilia respectively chromatographyhigh 6 8 87.

https://doi.org/10.21577/0103-5053.20230183

The high biodiversity of benthic organisms in a coastal ecosystem revealed by an integrative approach
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Amaral, A. Cecília Z.

; Cunha, Beatriz P.

; Checon, Helio H.

; Godoy, Angélica S. de

; Silva, Camila F. da

; Corte, Guilherme N.

; Nogueira, João M. de M.

; Fukuda, Marcelo V.

; Steiner, Tatiana M.

; Kawauchi, Gisele Y.

; Turra, Alexander

; Denadai, Márcia R.

; Ferreira, Luciane

; Mendonça, Joel B. de

; Tavares, Marcos

; Leite, Fosca P. P.

; Costa, Mariana F. B.

; Siqueira, Silvana G. L.

; Vieira, Leandro M.

; Dias, Gustavo M.

; Teixeira, Joyce A.

; Rocha, Rosana M.

; Gusmão, Luciana C.

; Borges, Michela

; Alitto, Renata

; Machado, Fabrizio M.

; Passos, Flávio D.

; Cunha, Carlo M.

; Simone, Luiz R.L.

; Araujo, Ana Paula G.

; Carbayo, Fernando

; Bahia, Juliana

; Bulnes, Verónica N.

; Castello-Branco, Cristiana

; Hajdu, Eduardo

; Vilas-Boas, Ana Carolina

; Garraffoni, André R. S.

; Schockaert, Ernest

; Fonseca, Gustavo

; Domenico, Maikon Di

; Curini-Galletti, Marco

; Sørensen, Martin V.

; Hochberg, Rick

; Oliveira, Ana Julia F. C. de

; Zampieri, Bruna Del B.

; Chinelatto, Roberta M.

; Migotto, Alvaro E.

Biota Neotropica

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2024, Volume 24 N. 2 elocation e20231583

Abstract: Pt En | Text: Pt En | PDF: Pt | PDF: En

Resumo O aumento da modificação dos habitats e da perda de espécies demanda esforços consistentes para descrever e compreender os padrões de biodiversidade. O programa BIOTA/FAPESP foi criado nesse contexto e é uma iniciativa de sucesso para promover estudos em biodiversidade e conservação no Brasil. O BIOTA/Araçá é um projeto interdisciplinar que promoveu uma avaliação detalhada da biodiversidade da Baía do Araçá, um ecossistema costeiro localizado ao Norte do estado de São Paulo, Sudeste do Brasil. A baía engloba múltiplos habitats, tais como praias, manguezais, costões rochosos, e uma planície de maré, e também fornece importantes serviços ecossistêmicos. Infelizmente, a baía está sujeita à conflitos sócio-ambientais complexos que contrastam demandas econômicas, sociais e ambientais (i.e. a expansão das atividades do porto vizinho vs. a pesca artesanal de pequena escala e a proteção da biodiversidade). O presente estudo apresenta um levantamento das espécies bentônicas que ocorrem nos diferentes habitats da Baía do Araçá, incluindo dados obtidos durante o projeto BIOTA/Araçá e de investigações realizadas anteriormente na área. As espécies bentônicas desempenham um papel importante no ambiente marinho, e estudar a diversidade desses organismos que vivem associados ao fundo é indispensável para compreender o funcionamento do meio ambiente. A macrofauna, meiofauna, e microorganismos associados aos fundos consolidado e inconsolidado foram listados, e informações adicionais foram fornecidas para cada espécie, tais como a distribuição geográfica e nos habitats. O checklist inclui 826 espécies, quase 70% registradas durante o projeto BIOTA/Araçá. Os taxa mais especiosos foram os anelídeos (225 spp.), moluscos (194 spp.), e crustáceos (177 spp.). Entre as espécies bentônicas listadas, sete são endêmicas da Baía do Araçá, 14 são consideradas ameaçadas de extinção, e sete são exploradas economicamente. A baía é a localidade tipo de vários taxa, e 11 novas espécies bentônicas foram descritas com base em espécimes amostrados durante o projeto. Este projeto mostra a importância da Baía do Araçá como um ambiente de riqueza biológica única e demonstra a necessidade de esforços para a sua conservação considerando as atuais ameaças. BIOTAFAPESP BIOTA FAPESP Brasil BIOTAAraçá Paulo praias manguezais rochosos maré ecossistêmicos Infelizmente sócioambientais sócio econômicas i.e. ie i (i.e vs . biodiversidade) área marinho macrofauna meiofauna listados espécie 82 70 225 (22 spp., spp spp. , spp.) 194 (19 177 (17 spp.. listadas 1 extinção economicamente ameaças i.e 8 7 22 (2 19 (1 17 2 (

Abstract Increasing habitat modification and species loss demand consistent efforts to describe and understand biodiversity patterns. The BIOTA/FAPESP Program was created in this context and it has been a successful initiative to promote studies on biodiversity and conservation in Brazil. The BIOTA/Araçá is an interdisciplinary project that provided a detailed evaluation of the biodiversity of Araçá Bay, a coastal seascape located on the North coast of the state of São Paulo, Southeast Brazil. The bay encompasses multiple habitats, such as beaches, mangroves, rocky shores, and a tidal flat, and provides important ecosystem services. Unfortunately, the bay is the subject of complex social-environmental conflicts that oppose economic, social, and environmental demands (i.e., the expansion of neighboring harbor activities vs. small-scale artisanal fisheries and protection of biodiversity). The present study presents a survey of the benthic species occurring in the different habitats of Araçá Bay, including data obtained during the BIOTA/Araçá project and previous assessments of the area. The benthic species play an important role in marine environments and studying the diversity of these organisms that live associated with the bottom is indispensable for comprehending the environment’s functioning. The macrofauna, meiofauna, and microorganisms associated with soft and hard bottom were listed, and additional information, such as the habitat and geographical distribution, were provided for each species. The checklist includes 826 species, almost 70% recorded during the BIOTA/Araçá project. The most speciose taxa were the annelids (225 spp.), mollusks (194 spp.), and crustaceans (177 spp.). Seven benthic species are endemic to Araçá Bay, 14 are considered threatened, and seven are economically exploited. Furthermore, the bay is the type locality of many taxa, and 11 new benthic species were described based on specimens sampled during the project. This project shows the importance of Araçá Bay as a unique biologically rich environment and highlights the need for conservation efforts in light of the current threats. patterns BIOTAFAPESP BIOTA FAPESP Brazil BIOTAAraçá Paulo beaches mangroves shores flat services Unfortunately socialenvironmental social economic i.e., ie i e (i.e. vs smallscale small scale biodiversity. . biodiversity) area s functioning macrofauna meiofauna listed information distribution 82 70 225 (22 spp., spp spp. , spp.) 194 (19 177 (17 spp.. 1 threatened exploited Furthermore threats i.e. (i.e 8 7 22 (2 19 (1 17 i.e 2 (

https://doi.org/10.1590/1676-0611-bn-2023-1583

Therapeutic Adherence According to the Morisky Scale in Patients with Hypertension
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Lanza, Vinícius Encenha

; Silva, Gabriel Oliveira

; Quiroga, Celi Cristina Calamita

; Cavalcante, Margaret Assad

; Barroso, Weimar Kunz Sebba

; Brandão, Andréa Araujo

; Barbosa, Eduardo Costa Duarte

; Malachias, Marcus Vinicius Bolivar

; Gomes, Marco Mota

; Amodeo, Celso

; Povoa, Rui Manoel dos Santos

; Précoma, Dalton Bertolim

; Sousa, Antônio Carlos Sobral

; Dantas, João Miguel Malta

; Cesarino, Evandro José

; Barros e Silva, Pedro G. M. de

; Veiga Jardim, Paulo Cesar B.

; Lopes, Renato D.

International Journal of Cardiovascular Sciences

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2024, Volume 37 elocation e20220138

Abstract: En | Text: En | PDF: En

Abstract Background In view of the high prevalence of hypertension and the importance of adequate drug therapy in the prevention of complications, it is necessary to know the adherence to drug treatment in this population. Objective To verify adherence to antihypertensive drug treatment in Brazilian patients with hypertension using the Morisky-Green Test (MGT), relating it with demographic data. Methods Prospective, observational, multicenter, national registry study, with 2,578 hypertensive patients participating in study I, the Brazilian Cardiovascular Registry of Arterial Hypertension (I-RBH), recruited in the five regions of Brazil. The analyses carried out on the data were descriptive statistics, qui-square tests, ANOVA, and logistic regression, adopting 5% as the significance level for the tests. Results The research shows that 56.13% of patients in the sample were female; 56.71% were elderly (≥ 65 years); 55.86% were White; 52.37% were from the Southeast Region; and 59.74% were non-adherent. Logistic regression showed an independent relationship between patients’ age, ethnicity, and region with medication adherence. Conclusion Adherence to treatment is the key to reducing high rates of cardiovascular complications. The study brings a successful outcome in the relationship between the factors ethnicity, age, and region of patients with hypertension and medication adherence. To this end, it is necessary to understand these factors, considering systematic evaluation in the care of patients with hypertension and other chronic non-communicable diseases. This study is a significant contribution to multidisciplinary teams, as it highlights which risk factors interfere with medication adherence, incorporating better strategies in health education. complications population MoriskyGreen Morisky Green MGT, MGT , (MGT) Prospective observational multicenter 2578 2 578 2,57 I IRBH, IRBH RBH (I-RBH) Brazil statistics quisquare qui square tests ANOVA 5 5613 56 13 56.13 female 5671 71 56.71 ≥ ( 6 years years) 5586 55 86 55.86 White 5237 52 37 52.37 Region 5974 59 74 59.74 nonadherent. nonadherent non adherent. adherent non-adherent age ethnicity end noncommunicable communicable diseases teams education (MGT 257 57 2,5 (I-RBH 561 1 56.1 567 7 56.7 558 8 55.8 523 3 52.3 597 59.7 25 2, 56. 55. 52. 59.

https://doi.org/10.36660/ijcs.20220138

10.

What is new in boron nutrition? Case study on African mahogany leaf anatomy nutrition
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Araújo, Matheus da Silva

; Marques, João Paulo Rodrigues

; Aoki, Gabriel Lucas de Melo

; Soares, Wellington Rosa

; Otto, Rafael

Scientia Agricola

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2024, Volume 81 elocation e20230154

Abstract: En | Text: En | PDF: En

ABSTRACT Fertilization with boron (B) is a crucial aspect in the management of tropical soils to achieve high yield and wood quality in forest species. However, studies are still needed for a better understanding of the effects of B on the anatomy and physiology of African mahogany to improve borate fertilization programs in terms of doses and sources of B. The objective was to characterize the morphology and anatomy of African mahogany leaves subjected to doses and sources of B, as well as to investigate leaf lesions caused by excess B. In a 3 × 3 factorial scheme, a randomized block design was used with four replications, resulting in a total of 36 experimental units. The treatments consisted of three sources of B: borax (sodium tetraborate), ulexite, and colemanite, and three doses of B: 0, 1.5, and 3 mg dm –3 . After 120 days of transplanting, leaf samples with and without toxicity lesions were collected for morphological and anatomical evaluations. Following the collection, the samples were photographed and fixed in Karnovsky’s solution. The plants cultivated in the control treatment did not exhibit any symptoms of B deficiency in the leaf tissue. Borax and ulexite sources, and higher doses of B resulted in greater lesions, accompanied by the accumulation of phenols in the necrotic region. In contrast, the source of lower solubility (colemanite) and lower dose of B demonstrated the highest accumulation of starch. African mahogany is sensitive to applying high doses (3 mg dm –3 ) and high solubility sources of Boron (borax). Excessive B levels cause necrosis and structural disorganization of African mahogany leaf tissues. (B species However scheme replications units sodium tetraborate, tetraborate , tetraborate) colemanite 0 15 1 5 1.5 – 12 transplanting evaluations collection Karnovskys Karnovsky s solution tissue region contrast (colemanite starch ( borax. (borax) tissues 1. (borax

https://doi.org/10.1590/1678-992x-2023-0154

11.

Novelties to the vascular Flora of the Ibitipoca Mountains, Minas Gerais, Brazil Mountains Gerais
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Toledo, Cássio A. P.

; Souza, Lukas R.

; Diniz, Adriana P.

; Santos, Adrielle J. M.

; Araujo, Carina de

; Graciano, Diego S.

; Arantes, Fabíula M.

; Sabino, Gabriel P.

; Guimarães, Gabriel S.

; Onorato, Geovana de C.

; Andrella, Giovani C.

; Waga, Isabela M.

; Castilho, Jade

; Silva, João P. S.

; Manoel, Laís B.

; Lima, Mariana C. A.

; Araújo, Michelly D. F.

; Feliz, Pablo

; Gaem, Paulo H.

; Luiz, Pedro L.

; Völtz, Rafael R.

; Gerace, Samuele

; Sawakuchi, Sonia

; Ivanauskas, Natália M.

; Koch, Ingrid

; Forzza, Rafaela C.

; Souza, Vinicius C.

; Rodrigues, Ricardo R.

Biota Neotropica

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2024, Volume 24 N. 2 elocation e20231560

Abstract: Pt En | Text: Pt En | PDF: Pt | PDF: En

Resumo A Serra do Ibitipoca ocorre no sudeste do estado de Minas Gerais, sudeste do Brasil, e inclui um mosaico de diferentes tipos de vegetação, como parte do domínio da Mata Atlântica. Tal heterogeneidade é resultado da ocorrência de diversos ecótonos na região, considerados áreas de amortecimento essenciais para manutenção da biodiversidade e estrutura de ecossistemas adjacentes. Dada a importância destes ambientes para conservação da biodiversidade, inventários florísticos são importantes para catalogar a riqueza de plantas em áreas naturais, onde espécies e paisagens têm sido destruídas, especialmente nas últimas décadas. Para contribuir com o aumento do conhecimento sobre a Flora vascular na Serra do Ibitipoca, um inventário florístico foi conduzido em áreas privadas adjacentes ao Parque Estadual do Ibitipoca. As descobertas mais relevantes do presente estudo incluem: caracterização dos diferentes tipos de vegetação, 17 novos registros para a Flora de Minas Gerais, coleta de 288 espécies nunca registradas para o parque (80% de dissimilaridade – especialmente devido à ocorrência e tamanho de diferentes fitofisionomias entre as áreas) e presença de 31 espécies ameaçadas. Além disso, discussões sobre esforços para conservação e políticas públicas são apresentadas. Gerais Brasil vegetação Atlântica região naturais destruídas décadas incluem 1 28 80% 80 (80 3 ameaçadas disso apresentadas 2 8 (8 (

Abstract The Ibitipoca Mountains occur in southeastern Minas Gerais state, Southeast Brazil, and includes a mosaic of different vegetation types, as part of the Atlantic Forest domain. Such heterogeneity results in the occurrence of several ecotones in the region, considered essential buffer zones for maintaining biodiversity and structure among adjacent ecosystems. Given the importance of these environments for biodiversity conservation, floristic surveys are important to catalogue plant richness in natural areas, where species and landscapes have been destroyed, especially over the last decades. To contribute to increase the knowledge on the vascular Flora in the Ibitipoca Mountains, a floristic inventory was undertaken in private properties located in the boundaries of “Parque Estadual do Ibitipoca” (Ibitipoca State Park). Relevant findings of the present study include: characterization of the different vegetation types, 17 new records for the Flora of Minas Gerais, collection of 288 species never recorded in the state park (80% dissimilarity – especially due to the occurrence and size of different phytophysiognomies between these areas) and presence of 31 threatened species. In addition, discussions about conservation efforts and public policies are presented. Brazil types domain region ecosystems areas destroyed decades Parque Park. Park . Park) include 1 28 80% 80 (80 3 addition presented 2 8 (8 (

https://doi.org/10.1590/1676-0611-bn-2023-1560

12.

Efficiency of protein combinations in diets for Rhamdia quelen: growth, digestive and metabolic biochemistry and nutrient deposition quelen growth
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CORRÊIA, VIVIANI

; PRETTO, ALEXANDRA

; PEDRON, FABIO A.

; FERRIGOLO, FERNANDA R.G.

; VEIVERBERG, CÁTIA A.

; BATTISTI, EDUARDO K.

; FREITAS, SILVANDRO T.

; LOUREIRO, BRUNO B.

; SILVA, LEILA P.

; RADÜNZ NETO, JOÃO

Anais da Academia Brasileira de Ciências

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2024, Volume 96 Suppl. 1 elocation e20231333

Abstract: En | Text: En | PDF: En

Abstract This study was conducted to determine the best combination of protein sources in diets for jundiá, based on growth, metabolism, and nutrient deposition. Five protein combinations were tested: casein + fish meal (control), casein + gelatin, casein + albumin, casein + albumin + fish meal, and albumin + fish meal, in diets containing 370 g Kg-1 of crude protein and 13.4 MJ Kg-1 of digestible energy. The fish (9.38 ± 0.12 g) were allocated in a water recirculation system at a density of 3.35 g L-1 per experimental unit and fed until apparent satiety for 40 days with the diets. The fish fed with the control diet had the highest final weight, specific growth rate, protein and feed efficiency ratio, protein retention, and best apparent feed conversion. On the other hand, fish that received casein + albumin and albumin + fish meal diets showed worse results in growth and body protein retention, low trypsin and chymotrypsin activity, and high intestinal amylase activity. Therefore, the combination referred to as control (casein + fish meal) conclusively provides the best rhythm for nutrient digestion and metabolism processes, enabling fish to reach greater growth and retention of body protein with low whole-fish fat content. jundiá deposition tested control, , (control) gelatin 37 Kg1 Kg 1 Kg- 134 13 4 13. energy 9.38 938 9 38 (9.3 012 0 12 0.1 335 3 35 3.3 L1 L L- weight rate ratio conversion hand activity Therefore processes wholefish whole content (control 9.3 93 (9. 01 0. 33 3. 9. (9 (

https://doi.org/10.1590/0001-3765202420231333

13.

The mitogenomic landscape of Banisteriopsis caapi (Malpighiaceae), the sacred liana used for ayahuasca preparation Malpighiaceae, Malpighiaceae , (Malpighiaceae) (Malpighiaceae
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Chavarro-Mesa, Edisson

; Almeida, João Victor dos Anjos

; Silva, Saura R.

; Lopes, Simone Santos

; Barbosa, Jose Beethoven Figueiredo

; Oliveira, Danilo

; Corrêa, Maria Alice

; Moraes, Ana Paula

; Miranda, Vitor F.O.

; Prosdocimi, Francisco

; Varani, Alessandro M.

Genetics and Molecular Biology

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2024, Volume 47 N. 2 elocation e20230301

Abstract: En | Text: En | PDF: En

Abstract The sacred ayahuasca brew, utilized by indigenous communities in the Amazon and syncretic religious groups in Brazil, primarily consists of a decoction of two plants: (i) the Amazonian liana known as Mariri or Jagube (Banisteriopsis caapi), and (ii) the shrub referred as Chacrona or Rainha (Psychotria viridis). While Chacrona leaves are rich in N,N-Dimethyltryptamine (DMT), a potent psychedelic, the macerated vine of Mariri provides beta-carboline alkaloids acting as monoamine oxidase inhibitors, preventing DMT’s degradation. This study sequenced, assembled, and analyzed the complete genome of B. caapi’s mitochondrion, yielding a circular structure spanning 503,502 bp. Although the mtDNA encompasses most plant mitochondrial genes, it lacks some ribosomal genes, presents some atypical genes, and contains plastid pseudogenes, suggesting gene transfer between organelles. The presence of a 7-Kb repetitive segment containing copies of the rrnL and trnfM genes suggests mitogenome isomerization, supporting the hypothesis of dynamic mitogenome maintenance in plants. Phylogenetics and phylogenomics across 24 Malpighiales confirms the sample’s placement in the “Tucunacá” ethnovariety, aligning with morphological identification. This study spearheads efforts to decode the genome of this esteemed Malpighiaceae. brew Brazil plants i (i Banisteriopsis caapi, caapi , caapi) ii (ii Psychotria viridis. viridis . viridis) N,NDimethyltryptamine NNDimethyltryptamine N,N Dimethyltryptamine N DMT, DMT (DMT) psychedelic betacarboline beta carboline inhibitors DMTs s degradation sequenced assembled B caapis mitochondrion 503502 503 502 503,50 bp pseudogenes organelles 7Kb Kb 7 isomerization 2 samples sample Tucunacá “Tucunacá ethnovariety identification Malpighiaceae NDimethyltryptamine NN (DMT 50350 50 503,5 5035 5 503,

https://doi.org/10.1590/1678-4685-gmb-2023-0301

14.

Quercetin and ibuprofen combination displayed anti-inflammatory effects and also extenuates the enteric neurons damage of arthritic rats antiinflammatory anti inflammatory
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SILVA, BRUNA THAIS DA

; MARTINS-PERLES, JULIANA VANESSA C.

; BOSSOLANI, GLEISON DAION P.

; LIMA, MARIANA M.

; SEHABER-SIERAKOWSKI, CAMILA C.

; GREMASCHI, LUCAS B.

; CUNHA, JOÃO PAULO SILVEIRA E

; BERSANI-AMADO, CIOMAR A.

; ZANONI, JACQUELINE N.

Anais da Academia Brasileira de Ciências

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2024, Volume 96 Suppl. 1 elocation e20230244

Abstract: En | Text: En | PDF: En

Abstract This study aimed to investigate the antioxidant and anti-inflammatory properties of quercetin on the cellular components of the Enteric Nervous System in the ileum of rats with arthritis. Rats were distributed into five groups: control (C), arthritic (AIA), arthritic treated with ibuprofen (AI), arthritic treated with quercetin (AQ) and arthritic treated with both ibuprofen and quercetin (AIQ). The ileum was processed for immunohistochemical techniques for HuC/D, calcitonin gene-related peptide, and vasoactive intestinal polypeptide. Measurements in histological sections, chemiluminescence assays, and total antioxidant capacity were also performed. Rheumatoid arthritis resulted in a decrease in neuronal density, yet neuroplasticity mechanisms were evident through observed changes in varicosities size and neuronal area compared to the control group. Reduced paw edema and neuroprotective effects were predominantly noted in both plexuses, as evidenced by the increased density preservation of HuC/D-IR neurons in the AIQ group. The increase of lipoperoxidation levels and paw edema volume in the AQ group was observed compared to the arthritic, whereas the AIQ group mainly showed similar results to those observed in the control. The enteropathy associated with arthritis proved to be significant in the field of gastroenterology, and the combination of quercetin and ibuprofen demonstrated promising anti-inflammatory and neuroprotective effects. antiinflammatory anti inflammatory groups C, C , (C) AIA, AIA (AIA) AI, AI (AI) (AQ AIQ. . (AIQ) HuCD HuC D HuC/D generelated gene related peptide polypeptide sections assays performed plexuses HuC/DIR HuCDIR IR gastroenterology (C (AIA (AI (AIQ DIR

https://doi.org/10.1590/0001-3765202420230244

15.

Phytohormones mitigate salt stress damage in radish
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Silva, Toshik I. da

; Dias, Marlon G.

; Lannes, Samuel D. O.

; Domingues, Paloma

; Sales, Giuliana N. B.

; Nóbrega, Jackson S.

; Ribeiro, João E. da S.

; Costa, Franciscleudo B. da

; Soares, Lauriane A. dos A.

; Lima, Geovani S. de

Revista Brasileira de Engenharia Agrícola e Ambiental

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2024, Volume 28 N. 7 elocation e279042

Abstract: Pt En | Text: Pt En | PDF: Pt | PDF: En

RESUMO Os fitormônios desempenham um papel fundamental na regulação do crescimento das plantas e na resposta ao estresse salino, auxiliando na percepção de sinais e mediação do sistema de defesa. Com isso, o objetivo do presente estudo foi avaliar o impacto da aplicação de fitormônios na mitigação dos efeitos prejudiciais do estresse salino em rabanete. Três níveis de NaCl (0, 50 e 100 mM) e cinco fitormônios (ácido jasmônico, ácido salicílico, citocinina, giberelina e poliamina) e tratamento controle (água deionizada) foram estudados. A aplicação de fitormônios, como ácido jasmônico e citocinina melhorou a eficiência fotossintética, diâmetro, comprimento e teor de sólidos solúveis totais de tubérculo. Sob condições de estresse salino, as plantas demonstraram adaptações nas trocas gasosas, variando suas taxas de fotossíntese e transpiração. Além disso, foi observado um equilíbrio eficaz entre a assimilação de carbono e a perda de água em algumas plantas. A aplicação de fitormônios contrabalançou o estresse salino, protegendo a clorofila, mantendo as trocas gasosas e promovendo o crescimento das plantas de rabanete. Consequentemente, o uso de fitormônios representa uma alternativa para o cultivo de rabanete sob estresse salino. defesa isso 0, 0 (0 5 10 mM salicílico poliamina deionizada estudados fotossintética diâmetro tubérculo transpiração disso clorofila Consequentemente ( 1

ABSTRACT Phytohormones play a pivotal role in regulating plant growth and responding to salt stress, aiding in signal perception and defense system mediation. With this, the objective of the present study was to assess the impact of phytohormone application in mitigating the harmful effects of salt stress on radish. Three levels of NaCl (0, 50, and 100 mM) and five phytohormones (jasmonic acid, salicylic acid, cytokinin, gibberellin, and polyamine) plus a control treatment (deionized water) were studied. The application of phytohormones such as jasmonic acid and cytokinin improved photosynthetic efficiency, and diameter, length, and total soluble solids content of tuber. Under salt stress conditions, plants showed adaptations in gas exchange, varying their rates of photosynthesis and transpiration. Furthermore, an effective balance between carbon assimilation and water loss was observed in some plants. The application of phytohormones counteracted salt stress, safeguarding chlorophyll, sustaining gas exchange, and promoting plant growth of radish. Consequently, use of phytohormones represents an alternative for radish cultivation under salt stress. mediation this 0, 0 (0 50 10 mM gibberellin polyamine deionized studied efficiency diameter length tuber conditions exchange transpiration Furthermore chlorophyll Consequently ( 5 1

https://doi.org/10.1590/1807-1929/agriambi.v28n7e279042

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issn	journal ISSN
in	SciELO colection code (e.g. scl - Brasil, col - Colômbia)
use_license	article usage license code

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