Growth and contents of organic and inorganic solutes in amaranth under salt stress

Detalhes bibliográficos
Autor(a) principal: Menezes, Renata Velasques
Data de Publicação: 2017
Outros Autores: Azevedo Neto, André Dias de, Ribeiro, Marcos de Oliveira, Cova, Alide Mitisue Watanabe
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Pesquisa Agropecuária Tropical (Online)
Texto Completo: https://revistas.ufg.br/pat/article/view/42580
Resumo: Amaranthus cruentus L. is a forage species, with grains that exhibit excellent nutritional characteristics, being the ‘BRS Alegria’ the first cultivar recommended for cultivation in Brazil. This study aimed at evaluating the effect of salt stress on the growth and concentrations of organic and inorganic solutes in Amaranthus cruentus L. (‘BRS Alegria’ cultivar). Height, stem diameter, number of leaves, leaf, stem and root dry mass, leaf area, relative water content and membrane integrity percentage, as well as soluble carbohydrate, free amino acid, soluble protein, free proline, Na+, Cl- and K+ contents, were evaluated in different plant organs. Salinity significantly reduced the biomass yield and leaf area from the treatment with 25 mM of NaCl, indicating that the ‘BRS Alegria’ cultivar is sensitive to salt stress. Soluble carbohydrates in the leaves decreased by 59 %, while the other organic solutes showed no substantial increases. These results, coupled with the reduction in the relative water content and membrane integrity, suggest a low ability of this cultivar to adjust osmotically under salt stress. The K+/Na+ ratio abruptly decreased in 25 mM of NaCl, suggesting an ionic imbalance, which may partially explain the salt-induced growth reduction.
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spelling Growth and contents of organic and inorganic solutes in amaranth under salt stressCrescimento e teores de solutos orgânicos e inorgânicos em amaranto sob estresse salinoAmaranthus cruentus L.salinityinorganic solutesorganic solutestoxic ions.Amaranthus cruentus L.salinidadesolutos inorgânicossolutos orgânicosíons tóxicos.Amaranthus cruentus L. is a forage species, with grains that exhibit excellent nutritional characteristics, being the ‘BRS Alegria’ the first cultivar recommended for cultivation in Brazil. This study aimed at evaluating the effect of salt stress on the growth and concentrations of organic and inorganic solutes in Amaranthus cruentus L. (‘BRS Alegria’ cultivar). Height, stem diameter, number of leaves, leaf, stem and root dry mass, leaf area, relative water content and membrane integrity percentage, as well as soluble carbohydrate, free amino acid, soluble protein, free proline, Na+, Cl- and K+ contents, were evaluated in different plant organs. Salinity significantly reduced the biomass yield and leaf area from the treatment with 25 mM of NaCl, indicating that the ‘BRS Alegria’ cultivar is sensitive to salt stress. Soluble carbohydrates in the leaves decreased by 59 %, while the other organic solutes showed no substantial increases. These results, coupled with the reduction in the relative water content and membrane integrity, suggest a low ability of this cultivar to adjust osmotically under salt stress. The K+/Na+ ratio abruptly decreased in 25 mM of NaCl, suggesting an ionic imbalance, which may partially explain the salt-induced growth reduction.O Amaranthus cruentus L. é uma espécie forrageira, com grãos que possuem ótimas características nutricionais, sendo a cultivar ‘BRS Alegria’ a primeira recomendada para cultivo no Brasil. Objetivou-se avaliar o efeito do estresse salino no crescimento e concentrações de solutos orgânicos e inorgânicos em Amaranthus cruentus L. cv. ‘BRS Alegria’. Foram avaliados a altura, diâmetro do caule, número de folhas, massa seca das folhas, caule e raízes, área foliar, teor relativo de água, porcentagem de integridade das membranas e teores de carboidratos solúveis, aminoácidos livres, proteínas solúveis, prolina livre, Na+, Cl- e K+, nos diferentes órgãos da planta. A salinidade reduziu fortemente a produção de biomassa e a área foliar a partir do tratamento com 25 mM de NaCl, indicando que a cultivar ‘BRS Alegria’ é sensível ao estresse salino. Os carboidratos solúveis nas folhas diminuíram 59 %, enquanto os demais solutos orgânicos não apresentaram aumentos substanciais. Esses resultados, associados à diminuição do teor relativo de água e da integridade das membranas, sugerem uma baixa capacidade dessa cultivar para o ajustamento osmótico sob estresse salino. A razão K+/Na+ reduziu-se abruptamente em 25 mM de NaCl, sugerindo desequilíbrio iônico, o que pode, ao menos em parte, explicar a redução de crescimento induzida pelo sal.Escola de Agronomia - Universidade Federal de Goiás2017-03-10info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionAvaliado por paresapplication/pdfhttps://revistas.ufg.br/pat/article/view/42580Pesquisa Agropecuária Tropical [Agricultural Research in the Tropics]; v. 47, n. 1, Jan./Mar. 2017; 22-30Pesquisa Agropecuária Tropical (Agricultural Research in the Tropics); v. 47, n. 1, jan./mar. 2017; 22-30Pesquisa Agropecuária Tropical; v. 47, n. 1, jan./mar. 2017; 22-301983-4063reponame:Pesquisa Agropecuária Tropical (Online)instname:Universidade Federal de Goiás (UFG)instacron:UFGenghttps://revistas.ufg.br/pat/article/view/42580/22569Copyright (c) 2017 Pesquisa Agropecuária Tropical (Agricultural Research in the Tropics)info:eu-repo/semantics/openAccessMenezes, Renata VelasquesAzevedo Neto, André Dias deRibeiro, Marcos de OliveiraCova, Alide Mitisue Watanabe2020-07-13T18:25:51Zoai:ojs.revistas.ufg.br:article/42580Revistahttps://revistas.ufg.br/patPUBhttps://revistas.ufg.br/pat/oaiaseleguini.pat@gmail.com||mgoes@agro.ufg.br1983-40631517-6398opendoar:2024-05-21T19:56:14.614826Pesquisa Agropecuária Tropical (Online) - Universidade Federal de Goiás (UFG)true
dc.title.none.fl_str_mv Growth and contents of organic and inorganic solutes in amaranth under salt stress
Crescimento e teores de solutos orgânicos e inorgânicos em amaranto sob estresse salino
title Growth and contents of organic and inorganic solutes in amaranth under salt stress
spellingShingle Growth and contents of organic and inorganic solutes in amaranth under salt stress
Menezes, Renata Velasques
Amaranthus cruentus L.
salinity
inorganic solutes
organic solutes
toxic ions.
Amaranthus cruentus L.
salinidade
solutos inorgânicos
solutos orgânicos
íons tóxicos.
title_short Growth and contents of organic and inorganic solutes in amaranth under salt stress
title_full Growth and contents of organic and inorganic solutes in amaranth under salt stress
title_fullStr Growth and contents of organic and inorganic solutes in amaranth under salt stress
title_full_unstemmed Growth and contents of organic and inorganic solutes in amaranth under salt stress
title_sort Growth and contents of organic and inorganic solutes in amaranth under salt stress
author Menezes, Renata Velasques
author_facet Menezes, Renata Velasques
Azevedo Neto, André Dias de
Ribeiro, Marcos de Oliveira
Cova, Alide Mitisue Watanabe
author_role author
author2 Azevedo Neto, André Dias de
Ribeiro, Marcos de Oliveira
Cova, Alide Mitisue Watanabe
author2_role author
author
author
dc.contributor.author.fl_str_mv Menezes, Renata Velasques
Azevedo Neto, André Dias de
Ribeiro, Marcos de Oliveira
Cova, Alide Mitisue Watanabe
dc.subject.por.fl_str_mv Amaranthus cruentus L.
salinity
inorganic solutes
organic solutes
toxic ions.
Amaranthus cruentus L.
salinidade
solutos inorgânicos
solutos orgânicos
íons tóxicos.
topic Amaranthus cruentus L.
salinity
inorganic solutes
organic solutes
toxic ions.
Amaranthus cruentus L.
salinidade
solutos inorgânicos
solutos orgânicos
íons tóxicos.
description Amaranthus cruentus L. is a forage species, with grains that exhibit excellent nutritional characteristics, being the ‘BRS Alegria’ the first cultivar recommended for cultivation in Brazil. This study aimed at evaluating the effect of salt stress on the growth and concentrations of organic and inorganic solutes in Amaranthus cruentus L. (‘BRS Alegria’ cultivar). Height, stem diameter, number of leaves, leaf, stem and root dry mass, leaf area, relative water content and membrane integrity percentage, as well as soluble carbohydrate, free amino acid, soluble protein, free proline, Na+, Cl- and K+ contents, were evaluated in different plant organs. Salinity significantly reduced the biomass yield and leaf area from the treatment with 25 mM of NaCl, indicating that the ‘BRS Alegria’ cultivar is sensitive to salt stress. Soluble carbohydrates in the leaves decreased by 59 %, while the other organic solutes showed no substantial increases. These results, coupled with the reduction in the relative water content and membrane integrity, suggest a low ability of this cultivar to adjust osmotically under salt stress. The K+/Na+ ratio abruptly decreased in 25 mM of NaCl, suggesting an ionic imbalance, which may partially explain the salt-induced growth reduction.
publishDate 2017
dc.date.none.fl_str_mv 2017-03-10
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
Avaliado por pares
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv https://revistas.ufg.br/pat/article/view/42580
url https://revistas.ufg.br/pat/article/view/42580
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv https://revistas.ufg.br/pat/article/view/42580/22569
dc.rights.driver.fl_str_mv Copyright (c) 2017 Pesquisa Agropecuária Tropical (Agricultural Research in the Tropics)
info:eu-repo/semantics/openAccess
rights_invalid_str_mv Copyright (c) 2017 Pesquisa Agropecuária Tropical (Agricultural Research in the Tropics)
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Escola de Agronomia - Universidade Federal de Goiás
publisher.none.fl_str_mv Escola de Agronomia - Universidade Federal de Goiás
dc.source.none.fl_str_mv Pesquisa Agropecuária Tropical [Agricultural Research in the Tropics]; v. 47, n. 1, Jan./Mar. 2017; 22-30
Pesquisa Agropecuária Tropical (Agricultural Research in the Tropics); v. 47, n. 1, jan./mar. 2017; 22-30
Pesquisa Agropecuária Tropical; v. 47, n. 1, jan./mar. 2017; 22-30
1983-4063
reponame:Pesquisa Agropecuária Tropical (Online)
instname:Universidade Federal de Goiás (UFG)
instacron:UFG
instname_str Universidade Federal de Goiás (UFG)
instacron_str UFG
institution UFG
reponame_str Pesquisa Agropecuária Tropical (Online)
collection Pesquisa Agropecuária Tropical (Online)
repository.name.fl_str_mv Pesquisa Agropecuária Tropical (Online) - Universidade Federal de Goiás (UFG)
repository.mail.fl_str_mv aseleguini.pat@gmail.com||mgoes@agro.ufg.br
_version_ 1799874819432382464

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