BRASSINOSTEROID‐SIGNALING KINASE 1 phosphorylating CALCIUM/CALMODULIN‐DEPENDENT PROTEIN KINASE functions in drought tolerance in maize

• DOI: 10.1111/nph.17403
• Publication Date: 2021-04-17T17:10:44Z
• Authors: Lei Liu; Yang Xiang; Jingwei Yan; Pengcheng Di; Jing Li; Xiujuan Sun; Gaoqiang Han; Lan Ni; Mingyi Jiang; Jianhua Yuan; Aying Zhang
• Keywords: Brassinosteroid; Drought Tolerance

Summary Drought stress seriously limits crop productivity. Although studies have been carried out, it is still largely unknown how plants respond to drought stress. Here we find that treatment can enhance the phosphorylation activity of brassinosteroid‐signaling kinase 1 (ZmBSK1) in maize ( Zea mays ). Our genetic reveal ZmBSK1 positively affects tolerance plants. localizes plasma membrane, interacts with calcium/calmodulin (Ca 2+ /CaM)‐dependent protein (ZmCCaMK), and phosphorylates ZmCCaMK. Ser‐67 a crucial site ZmCCaMK by ZmBSK1. enhances not only interaction between but also Furthermore, regulates its Ca /CaM binding, autophosphorylation transphosphorylation activity, function maize. results an important role for suggest direct regulatory mode phosphorylating