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Abscisic acid and stress induced by salt: Effect on the phenylpropanoid, L-ascorbic acid and abscisic acid metabolism of strawberry fruits.
Crizel, R L; Perin, E C; Siebeneichler, T J; Borowski, J M; Messias, R S; Rombaldi, C V; Galli, V.
Afiliação
  • Crizel RL; Universidade Federal de Pelotas, Pelotas, RS, Brazil.
  • Perin EC; Universidade Federal de Pelotas, Pelotas, RS, Brazil.
  • Siebeneichler TJ; Universidade Federal de Pelotas, Pelotas, RS, Brazil.
  • Borowski JM; Universidade Federal de Pelotas, Pelotas, RS, Brazil.
  • Messias RS; Universidade Federal de Pelotas, Pelotas, RS, Brazil.
  • Rombaldi CV; Universidade Federal de Pelotas, Pelotas, RS, Brazil.
  • Galli V; Universidade Federal de Pelotas, Pelotas, RS, Brazil. Electronic address: vane.galli@yahoo.com.br.
Plant Physiol Biochem ; 152: 211-220, 2020 May 11.
Article em En | MEDLINE | ID: mdl-32428822
ABSTRACT
Strawberry is one of the most popular fruits because of its sensorial and functional properties. However, strawberry crop is sensitive to salt stress conditions. Despite plants have plasticity, high salt concentrations induce molecular, biochemical, and physiological responses in plants. There is evidence that the abscisic acid (ABA) hormone acts as a signaling molecule under stress conditions; however, the molecular mechanisms involved in the synthesis and homeostasis of ABA and in the induction of phytochemical antioxidant compounds under stress conditions remain unclear. In this study, the effect of stress induced by NaCl (salt stress - SS), with or without the simultaneous application of ABA, on the ABA, phenylpropanoids and L-ascorbic acid (AsA) metabolisms were evaluated. The physiological aspects (Na, Cl and proline concentration, photosynthetic variables) were also studied. The results showed that salt stress increases the Na and Cl content in the leaves, affects photosynthetic variables and triggers the production of proline, pelargonidin-3-O-glucoside, total phenolic compounds and AsA content, alongside the upregulation of several genes from the phenylpropanoid and flavonoid pathways. These effects were accompanied by the induction of compounds and transcripts related to ABA biosynthesis, conjugation and catabolism. Otherwise, the exogenous application of ABA in salt stressed plants promotes a shift in gene expression and metabolism to mitigate the stress. Therefore, salt stress affects the metabolism of ABA, phenylpropanoids and AsA in strawberry increasing phytochemical composition which is strongly associated with an ABA-dependent mechanism.
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Texto completo: 1 Base de dados: MEDLINE Idioma: En Ano de publicação: 2020 Tipo de documento: Article

Texto completo: 1 Base de dados: MEDLINE Idioma: En Ano de publicação: 2020 Tipo de documento: Article