The Receptor-Like Kinase SIT1 Mediates Salt Sensitivity by Activating MAPK3/6 and Regulating Ethylene Homeostasis in Rice
-
- Chen-Hui Li
- Hebei Key Laboratory of Molecular and Cellular Biology, Hebei 050024, P.R. China
-
- Geng Wang
- Hebei Key Laboratory of Molecular and Cellular Biology, Hebei 050024, P.R. China
-
- Li-Qing Zhang
- Hebei Key Laboratory of Molecular and Cellular Biology, Hebei 050024, P.R. China
-
- Ji-Long Zhao
- Hebei Key Laboratory of Molecular and Cellular Biology, Hebei 050024, P.R. China
-
- Lian-Feng Ai
- Hebei Entry-Exit Inspection and Quarantine Bureau of China, Shijiazhuang, Hebei 050028, P.R. China
-
- Da-Ye Sun
- Hebei Key Laboratory of Molecular and Cellular Biology, Hebei 050024, P.R. China
-
- Yong-Feng Han
- Hebei Key Laboratory of Molecular and Cellular Biology, Hebei 050024, P.R. China
-
- Ying Sun
- Hebei Key Laboratory of Molecular and Cellular Biology, Hebei 050024, P.R. China
-
- Sheng-Wei Zhang
- Hebei Key Laboratory of Molecular and Cellular Biology, Hebei 050024, P.R. China
書誌事項
- 公開日
- 2014-06-01
- 権利情報
-
- https://academic.oup.com/journals/pages/open_access/funder_policies/chorus/standard_publication_model
- DOI
-
- 10.1105/tpc.114.125187
- 公開者
- Oxford University Press (OUP)
この論文をさがす
説明
<jats:title>Abstract</jats:title> <jats:p>High salinity causes growth inhibition and shoot bleaching in plants that do not tolerate high salt (glycophytes), including most crops. The molecules affected directly by salt and linking the extracellular stimulus to intracellular responses remain largely unknown. Here, we demonstrate that rice (Oryza sativa) Salt Intolerance 1 (SIT1), a lectin receptor-like kinase expressed mainly in root epidermal cells, mediates salt sensitivity. NaCl rapidly activates SIT1, and in the presence of salt, as SIT1 kinase activity increased, plant survival decreased. Rice MPK3 and MPK6 function as the downstream effectors of SIT1. SIT1 phosphorylates MPK3 and 6, and their activation by salt requires SIT1. SIT1 mediates ethylene production and salt-induced ethylene signaling. SIT1 promotes accumulation of reactive oxygen species (ROS), leading to growth inhibition and plant death under salt stress, which occurred in an MPK3/6- and ethylene signaling-dependent manner in Arabidopsis thaliana. Our findings demonstrate the existence of a SIT1-MPK3/6 cascade that mediates salt sensitivity by affecting ROS and ethylene homeostasis and signaling. These results provide important information for engineering salt-tolerant crops.</jats:p>
収録刊行物
-
- The Plant Cell
-
The Plant Cell 26 (6), 2538-2553, 2014-06-01
Oxford University Press (OUP)
