Nature Communications
Abstract
Ethylene plays essential roles in rice adaptive responses to water-saturating environment. Here, through analysis of the ethylene-insensitive mutant mhz1, we discovered that a histidine kinase MHZ1positively regulates ethylene responses in rice roots. MHZ1 autophosphorylates at the conserved histidine and can transfer the phosphoryl signal to response regulator OsRR21 via phosphotransfer proteins OsAHP1/2. And the phosphorelay is required for ethylene signaling. Ethylene receptor OsERS2, via GAF domain, physically interacts with MHZ1 to inhibit its kinase activity, subsequently the MHZ1-mediated phosphorelay. We propose that MHZ1 mediates ethylene response in a way partially independent of OsEIN2, and is directly inhibited by ethylene receptors. The resultssuggest that rice may have evolved to adopt the MHZ1 pathway in a different mechanism to strongly control ethylene-regulated root growth for adaptation in water environment.
| 论文编号: | DOI: 10.1038/s41467-020-14313-0 |
| 论文题目: | Histidine Kinase MHZ1/OsHK1 Interacts with Ethylene Receptors to Regulate Root Growth in Rice |
| 英文论文题目: | Histidine Kinase MHZ1/OsHK1 Interacts with Ethylene Receptors to Regulate Root Growth in Rice |
| 第一作者: | He Zhao, Kaixuan Duan, Biao Ma, Cuicui Yin, Yang Hu, Jianjun Tao, Yihua Huang, Wuqiang Cao, Hui Chen, Chao Yang, Zhiguo Zhang, Sijie He, Wanke Zhang, Xiangyuan Wan, Tiegang Lu, Shouyi Chen, Jinsong Zhang |
| 英文第一作者: | He Zhao, Kaixuan Duan, Biao Ma, Cuicui Yin, Yang Hu, Jianjun Tao, Yihua Huang, Wuqiang Cao, Hui Chen, Chao Yang, Zhiguo Zhang, Sijie He, Wanke Zhang, Xiangyuan Wan, Tiegang Lu, Shouyi Chen, Jinsong Zhang |
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| 发表年度: | 2020-02-11 |
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| 摘要: | Ethylene plays essential roles in rice adaptive responses to water-saturating environment. Here, through analysis of the ethylene-insensitive mutant mhz1, we discovered that a histidine kinase MHZ1positively regulates ethylene responses in rice roots. MHZ1 autophosphorylates at the conserved histidine and can transfer the phosphoryl signal to response regulator OsRR21 via phosphotransfer proteins OsAHP1/2. And the phosphorelay is required for ethylene signaling. Ethylene receptor OsERS2, via GAF domain, physically interacts with MHZ1 to inhibit its kinase activity, subsequently the MHZ1-mediated phosphorelay. We propose that MHZ1 mediates ethylene response in a way partially independent of OsEIN2, and is directly inhibited by ethylene receptors. The resultssuggest that rice may have evolved to adopt the MHZ1 pathway in a different mechanism to strongly control ethylene-regulated root growth for adaptation in water environment. |
| 英文摘要: | Ethylene plays essential roles in rice adaptive responses to water-saturating environment. Here, through analysis of the ethylene-insensitive mutant mhz1, we discovered that a histidine kinase MHZ1positively regulates ethylene responses in rice roots. MHZ1 autophosphorylates at the conserved histidine and can transfer the phosphoryl signal to response regulator OsRR21 via phosphotransfer proteins OsAHP1/2. And the phosphorelay is required for ethylene signaling. Ethylene receptor OsERS2, via GAF domain, physically interacts with MHZ1 to inhibit its kinase activity, subsequently the MHZ1-mediated phosphorelay. We propose that MHZ1 mediates ethylene response in a way partially independent of OsEIN2, and is directly inhibited by ethylene receptors. The resultssuggest that rice may have evolved to adopt the MHZ1 pathway in a different mechanism to strongly control ethylene-regulated root growth for adaptation in water environment. |
| 刊物名称: | Nature Communications |
| 英文刊物名称: | Nature Communications |
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| 其它备注: | He Zhao, Kaixuan Duan, Biao Ma, Cuicui Yin, Yang Hu, Jianjun Tao, Yihua Huang, Wuqiang Cao, Hui Chen, Chao Yang, Zhiguo Zhang, Sijie He, Wanke Zhang, Xiangyuan Wan, Tiegang Lu, Shouyi Chen, Jinsong Zhang. Histidine Kinase MHZ1/OsHK1 Interacts with Ethylene Receptors to Regulate Root Growth in Rice. Nature Communications. DOI: 10.1038/s41467-020-14313-0 |
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