数字农科院2.0

GhMAPK3, a mitogen-activated protein kinase, enhance salt and drought tolerance in cotton (Gossypium hirsutum)

文献类型： 外文期刊

作者： Hongliang Jian;Salisu Bello Sadau;Fei Wei;Adeel Ahmad;Zhengying Lu;Liang Ma;Xiaokang Fu;Nan Zhang;Jianhua Lu;Guo Yin;Hantao Wang;Hengling Wei

作者机构：

关键词： Drought stress;Gossypium hirsutum;MAPK;Salt stress

期刊名称： Industrial Crops and Products

ISSN： 0926-6690

年卷期： 2024 年 214 卷

页码：

收录情况： SCIE（2024版） ; ; EI（2024版）

摘要： Multiple abiotic stresses, such as drought and high salinity, seriously limit cotton production. However, the mitogen-activated protein kinases (MAPKs) could play a critical role in responding to multiple environmental abiotic stresses. In this study, one of the MAPKs in cotton, GhMAPK3 (GH_D03G1517), was cloned and its role in drought and salt stress tolerance was investigated. The qRT-PCR assays demonstrated that GhMAPK3 predominantly expressed in leaf and root parts and showed higher expression under salt and drought stress. Subcellular localization assays revealed that GhMAPK3 was distributed in the nucleus and cytoplasm. The silenced of GhMAPK3 could decrease the tolerance of cotton plants under salt and drought stress via virus-induced gene silencing (VIGS) experiments. In GhMAPK3-slienced plants, the expression of stress-responsive genes has been revealed to be down-regulated levels, while the oxidants and antioxidant enzymes showed relatively higher levels and relatively lower levels, respectively. We further acquired three GhMAPK3 overexpression Arabidopsis lines, and they showed higher drought and salt tolerance than the wild-type (WT) plants, the chlorophyll content and relative leaf water content were found to be relatively stable through GhMAPK3 overexpressed plants under the abiotic stress. Further investigation revealed that GhMAPK3 showed a higher germination rate and longer root length under salt and drought stress. Overall, our findings revealed that the GhMAPK3 gene plays a prominent role in drought and salt tolerance and offers knowledge on crop genetic improvements.

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