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The CBL1/9-CIPK23-AKT1 complex is essential for low potassium response in cassava

文献类型: 外文期刊

作者: Yan, Yu 1 ; He, Mei 1 ; Guo, Jingru 1 ; Zeng, Hongqiu 1 ; Wei, Yunxie 1 ; Liu, Guoyin 1 ; Hu, Wei 2 ; Shi, Haitao 1 ;

作者机构: 1.Hainan Univ, Coll Trop Crops, Coll Forestry, Hainan Key Lab Sustainable Utilizat Trop Bioresou, Haikou 570228, Hainan, Peoples R China

2.Chinese Acad Trop Agr Sci, Inst Trop Biosci & Biotechnol, Key Lab Biol & Genet Resources Trop Crops, Xueyuan Rd 4, Haikou 571101, Hainan, Peoples R China

关键词: AKT1; CIPK23; Protein interaction; Low potassium; Cassava

期刊名称:PLANT PHYSIOLOGY AND BIOCHEMISTRY ( 影响因子:4.27; 五年影响因子:4.816 )

ISSN: 0981-9428

年卷期: 2021 年 167 卷

页码:

收录情况: SCI

摘要: Cassava is a food crop and an important energy crop worldwide. However, its yield and quality are easily affected by low K+ stress, and the molecular mechanism of potassium channel is unknown in cassava. Herein, we revealed that calcineurin B-like 1/9 (MeCBL1/9)-CBL-interacting protein kinase 23 (MeCIPK23)-K+ TRANSPORTER1 (MeAKT1) complex plays an important role in low potassium response in cassava. Firstly, this study verified the in vivo role of MeAKT1 in K+ uptake in yeast. Secondly, we found that MeCBL1, MeCBL9, MeCIPK23 and MeAKT1 are involved in the absorption of K+ in cassava, and MeCBL1/9-CIPK23 complex is essential for MeAKT1-mediated K+ uptake. Moreover, MeCBL1/9-MeCIPK23-MeAKT1 showed different expression in different cassava varieties contrasting in the resistance to low K+ stress. Taken together, this study provides new insights into further improvement of K+ uptake in cassava.

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