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Constitutive expression of nucleotide-binding and leucine-rich repeat gene AtRPS2 enhanced drought and salt tolerance in rice.
Wu, Xiaoqiu; Wang, Zhangying; Liu, Xiaoxiao; Gao, Zhiyong; Li, Zhaowu.
Afiliación
  • Wu X; Basic Medical College, Shaoyang University, Shaoyang, 422000, China.
  • Wang Z; State Key Laboratory of Hybrid Rice, College of Life Sciences, Wuhan University, Wuhan, 430072, China.
  • Liu X; State Key Laboratory of Hybrid Rice, College of Life Sciences, Wuhan University, Wuhan, 430072, China.
  • Gao Z; State Key Laboratory of Hybrid Rice, College of Life Sciences, Wuhan University, Wuhan, 430072, China. Electronic address: zygao@whu.edu.cn.
  • Li Z; Basic Medical College, Shaoyang University, Shaoyang, 422000, China. Electronic address: zhaowuli@whu.edu.cn.
J Plant Physiol ; 287: 154048, 2023 Aug.
Article en En | MEDLINE | ID: mdl-37399697
Drought and salt are major abiotic stresses that severely restricts plant growth and development, leading to serious losses in agricultural production. Therefore, improving crop tolerance to drought and salt stresses is an urgent issue. A previous study showed that overexpression of Arabidopsis NLR gene AtRPS2 conferred broad-spectrum disease resistance in rice. In this study, we demonstrated that constitutive expression of AtRPS2 increased abscisic acid (ABA) sensitivity during seedling stage, the shoot length of transgenic plants were shorter than wild type plants. Exogenous application of ABA markedly induced the expression of stress-related genes and promoted stomatal close in transgenic plants. Overexpression of AtRPS2 also enhanced drought and salt tolerance in rice, transgenic plants exhibited higher survival rates under drought and salt conditions than wild type plants. The activities of catalase (CAT) and superoxide dismutase (SOD) were higher in AtRPS2 transgenic rice than wild type plants. In addition, the expression of stress-related genes and ABA-responsive genes were significantly upregulated in AtRPS2 transgenic plants than wild type plants under drought and salt treatments. Besides, exogenous application of ABA could facilitate drought and salt tolerance in AtRPS2 transgenic plants. Taken together, this study indicated that AtRPS2 could improve drought and salt tolerance in rice, and this phenomenon is likely to be regulated through ABA signaling pathways.
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Texto completo: 1 Colección: 01-internacional Banco de datos: MEDLINE Asunto principal: Oryza / Arabidopsis Idioma: En Revista: J Plant Physiol Asunto de la revista: BOTANICA Año: 2023 Tipo del documento: Article País de afiliación: China

Texto completo: 1 Colección: 01-internacional Banco de datos: MEDLINE Asunto principal: Oryza / Arabidopsis Idioma: En Revista: J Plant Physiol Asunto de la revista: BOTANICA Año: 2023 Tipo del documento: Article País de afiliación: China