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Exogenous 24-Epibrassinolide Enhanced Drought Tolerance and Promoted BRASSINOSTEROID-INSENSITIVE2 Expression of Quinoa.
Zhou, Ya-Li; You, Xin-Yong; Wang, Xing-Yun; Cui, Li-Hua; Jiang, Zhi-Hui; Zhang, Kun-Peng.
Afiliación
  • Zhou YL; College of Biological and Food Engineering, Anyang Institute of Technology, Anyang 455000, China.
  • You XY; College of Biological and Food Engineering, Anyang Institute of Technology, Anyang 455000, China.
  • Wang XY; College of Biological and Food Engineering, Anyang Institute of Technology, Anyang 455000, China.
  • Cui LH; College of Mechanical and Electronic Engineering, Northwest A&F University, Yangling 712100, China.
  • Jiang ZH; College of Biological and Food Engineering, Anyang Institute of Technology, Anyang 455000, China.
  • Zhang KP; College of Biological and Food Engineering, Anyang Institute of Technology, Anyang 455000, China.
Plants (Basel) ; 13(6)2024 Mar 18.
Article en En | MEDLINE | ID: mdl-38592849
ABSTRACT
Brassinosteroids (BRs) are involved in the regulation of biotic and abiotic stresses in plants. The molecular mechanisms of BRs that alleviate the drought stress in quinoa have rarely been reported. Here, quinoa seedlings were treated with 24-epibrassinolide (EBR) and we transiently transferred CqBIN2 to the quinoa seedlings' leaves using VIGS technology to analyze the molecular mechanism of the BR mitigation drought stress. The results showed that EBR treatment significantly increased the root growth parameters, the antioxidant enzyme activities, and the osmolyte content, resulting in a decrease in the H2O2, O2∙-, and malondialdehyde content in quinoa. A transcriptome analysis identified 8124, 2761, and 5448 differentially expressed genes (DEGs) among CK and Drought, CK and EBR + Drought, and Drought and EBR + Drought groups. WGCNA divided these DEGs into 19 modules in which these characterized genes collectively contributed significantly to drought stress. In addition, the EBR application also up-regulated the transcript levels of CqBIN2 and proline biosynthesis genes. Silenced CqBIN2 by VIGS could reduce the drought tolerance, survival rate, and proline content in quinoa seedlings. These findings not only revealed that exogenous BRs enhance drought tolerance, but also provided insight into the novel functions of CqBIN2 involved in regulating drought tolerance in plants.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: Plants (Basel) Año: 2024 Tipo del documento: Article País de afiliación: China Pais de publicación: Suiza
Texto completo
Añadir a Mi BVS
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XML
PubMed Links
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: Plants (Basel) Año: 2024 Tipo del documento: Article País de afiliación: China Pais de publicación: Suiza