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Salt stress inhibits germination of Stylosanthes humilis seeds through abscisic acid accumulation and associated changes in ethylene production

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dc.contributor.author Silva, Nilo C. Q.
dc.contributor.author Souza, Genaina A. de
dc.contributor.author Pimenta, Thaline M.
dc.contributor.author Brito, Fred A. L.
dc.contributor.author Picoli, Edgard A. T.
dc.contributor.author Zsögön, Agustín
dc.contributor.author Ribeiro, Dimas M.
dc.date.accessioned 2019-04-08T14:02:39Z
dc.date.available 2019-04-08T14:02:39Z
dc.date.issued 2018-09
dc.identifier.issn 0981-9428
dc.identifier.uri https://doi.org/10.1016/j.plaphy.2018.07.025
dc.identifier.uri http://www.locus.ufv.br/handle/123456789/24350
dc.description.abstract In Stylosanthes humilis, salt stress tolerance is associated with ethylene production by the seeds, however, how salt stress controls seed germination and ethylene production is poorly understood. Here, we studied the hormonal and metabolic changes triggered by salt stress on germination of S. humilis seeds. Salt stress led to decreased seed germination and ethylene production, concomitantly with higher abscisic acid (ABA) production by seeds. Treatment with NaCl and ABA promoted distinct changes in energy metabolism, allowing seeds to adapt to salt stress conditions. Treatment with the ABA biosynthesis inhibitor fluridone or ethylene precursor 1-aminocyclopropane-1-carboxylic acid (ACC) reversed the effects of salt stress on seed germination and ethylene production. Moreover, ethylene concentration was decreased by increasing the pH of the salt solution. High pH, however, did not influence concentration of ABA in seeds under salt stress. We conclude that biosynthesis of ABA and ethylene in response to salt stress constitutes a point of convergence that provides flexibility to regulate energy metabolism and embryo growth potential of S. humilis seeds within a given pH condition. en
dc.format pdf pt-BR
dc.language.iso eng pt-BR
dc.publisher Plant Physiology and Biochemistry pt-BR
dc.relation.ispartofseries Volume 130, Pages 399-407, September 2018 pt-BR
dc.rights Elsevier B. V. pt-BR
dc.subject Abscisic acid pt-BR
dc.subject Ethylene pt-BR
dc.subject Primary metabolism pt-BR
dc.subject Salt stress pt-BR
dc.subject Seed germination pt-BR
dc.title Salt stress inhibits germination of Stylosanthes humilis seeds through abscisic acid accumulation and associated changes in ethylene production en
dc.type Artigo pt-BR


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  • Artigos [611]
    Artigos Técnico-científicos na área de Biologia Vegetal

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