Nature Plants
Abstract
Complex antagonistic interactions between abscisic acid (ABA) and brassinosteroid (BR) signaling pathways have been widely documented. However, whether or how ABA interacts synergistically with BR in plants remains to be elucidated. Here we report that low but not high concentration of ABA increases lamina joint inclination of rice seedling, which requires functional BR biosynthesis and signaling. Transcriptome analyses confirm that about 60% of low concentration ABA early response genes can be regulated by BR in the same directions. ABA activates BR signal in a fast, limited, and short-term manner, and the BR biosynthesis regulatory gene, OsGSR1, plays a key role during this process, whose expression is induced slightly by ABA through transcriptional factor ABI3. Moreover, the early short-term BR signal activation is also important for ABA-mediated salt stress tolerance. Intriguingly, the process and effect of short-term BR signal activation were covered by high concentration of ABA, implying adaptive mechanisms existed in plant to cope with varying degrees of stress.
| 论文编号: | DOI:10.1038/s41477-021-00959-1 |
| 论文题目: | Synergetic Interplay of ABA and BR Signal in Regulating Plant Growth and Adaptation |
| 英文论文题目: | Synergetic Interplay of ABA and BR Signal in Regulating Plant Growth and Adaptation |
| 第一作者: | Li Qianqian, Xu Fan, Chen Zhuo, Teng Zhengfeng, Sun Kai, Li Xiancai, Yu Jianyuan, Zhang Guoxia, Liang Yan, Huang Xiahe, Du Lin, Qian Yangwen, Wang Yiqin, Chu Chengcai, Tang Jiuyou |
| 英文第一作者: | Li Qianqian, Xu Fan, Chen Zhuo, Teng Zhengfeng, Sun Kai, Li Xiancai, Yu Jianyuan, Zhang Guoxia, Liang Yan, Huang Xiahe, Du Lin, Qian Yangwen, Wang Yiqin, Chu Chengcai, Tang Jiuyou |
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| 发表年度: | 2021-07-06 |
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| 摘要: | Complex antagonistic interactions between abscisic acid (ABA) and brassinosteroid (BR) signaling pathways have been widely documented. However, whether or how ABA interacts synergistically with BR in plants remains to be elucidated. Here we report that low but not high concentration of ABA increases lamina joint inclination of rice seedling, which requires functional BR biosynthesis and signaling. Transcriptome analyses confirm that about 60% of low concentration ABA early response genes can be regulated by BR in the same directions. ABA activates BR signal in a fast, limited, and short-term manner, and the BR biosynthesis regulatory gene, OsGSR1, plays a key role during this process, whose expression is induced slightly by ABA through transcriptional factor ABI3. Moreover, the early short-term BR signal activation is also important for ABA-mediated salt stress tolerance. Intriguingly, the process and effect of short-term BR signal activation were covered by high concentration of ABA, implying adaptive mechanisms existed in plant to cope with varying degrees of stress. |
| 英文摘要: | Complex antagonistic interactions between abscisic acid (ABA) and brassinosteroid (BR) signaling pathways have been widely documented. However, whether or how ABA interacts synergistically with BR in plants remains to be elucidated. Here we report that low but not high concentration of ABA increases lamina joint inclination of rice seedling, which requires functional BR biosynthesis and signaling. Transcriptome analyses confirm that about 60% of low concentration ABA early response genes can be regulated by BR in the same directions. ABA activates BR signal in a fast, limited, and short-term manner, and the BR biosynthesis regulatory gene, OsGSR1, plays a key role during this process, whose expression is induced slightly by ABA through transcriptional factor ABI3. Moreover, the early short-term BR signal activation is also important for ABA-mediated salt stress tolerance. Intriguingly, the process and effect of short-term BR signal activation were covered by high concentration of ABA, implying adaptive mechanisms existed in plant to cope with varying degrees of stress. |
| 刊物名称: | Nature Plants |
| 英文刊物名称: | Nature Plants |
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| 其它备注: | Li Qianqian, Xu Fan, Chen Zhuo, Teng Zhengfeng, Sun Kai, Li Xiancai, Yu Jianyuan, Zhang Guoxia, Liang Yan, Huang Xiahe, Du Lin, Qian Yangwen, Wang Yiqin, Chu Chengcai, Tang Jiuyou. Synergetic Interplay of ABA and BR Signal in Regulating Plant Growth and Adaptation. Nature Plants. DOI:10.1038/s41477-021-00959-1 |
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