A cotton Raf-like MAP3K gene, GhMAP3K40, mediates reduced tolerance to biotic and abiotic stress in Nicotiana benthamiana by negatively regulating growth and development
作者： Xiaobo Chen , Ji Wang , Ming Zhu , Haihong Jia , Dongdong Liu
DOI: 10.1016/J.PLANTSCI.2015.08.012
关键词:
摘要: Mitogen-activated protein kinase (MAPK) cascades mediate various responses in plants. As the top component, MAP3Ks deserve more attention; however, little is known about role of MAP3Ks, especially cotton, a worldwide economic crop. In this study, gene encoding putative Raf-like MAP3K, GhMAP3K40, was isolated. GhMAP3K40 expression induced by stress and multiple signal molecules. The plants overexpressing had an enhanced tolerance to drought salt at germination stage. However, seedling stage, transgenic suffered severe damage after drought, exposure pathogens oxidative stress. defence-related genes antioxidant system were activated palnts, suggesting that positively regulate defence response. less able prevent pathogenic invasion, which due defects cell structure leaves. root control stronger compared with These results indicated negative growth development possibly caused down-regulating lignin biosynthesis. Overall, these suggest may response but cause reduced biotic abiotic negatively regulating development.
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