The TaCLE24b peptide signaling cascade modulates lateral root development and drought tolerance in wheat

Wen Yang, Man Feng, Kuohai Yu, Jie Cao, Guangxian Cui, Yumei Zhang, Huiru Peng, Yingyin Yao, Zhaorong Hu, Zhongfu Ni, Feng Qin, Fuminori Takahashi, Qixin Sun and Mingming Xin ()
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Wen Yang: China Agricultural University
Man Feng: China Agricultural University
Kuohai Yu: China Agricultural University
Jie Cao: China Agricultural University
Guangxian Cui: China Agricultural University
Yumei Zhang: Qingdao Agricultural University
Huiru Peng: China Agricultural University
Yingyin Yao: China Agricultural University
Zhaorong Hu: China Agricultural University
Zhongfu Ni: China Agricultural University
Feng Qin: China Agricultural University
Fuminori Takahashi: Tokyo University of Science
Qixin Sun: China Agricultural University
Mingming Xin: China Agricultural University

Nature Communications, 2025, vol. 16, issue 1, 1-12

Abstract: Abstract Plant peptide hormones play an important role in regulating root development and stress responses. Here, we identify a root-derived CLAVATA3/Endosperm surrounding region-related (CLE) peptide TaCLE24b and its leucine-rich repeat receptor-like kinase CLAVATA1 (CLV1) TaCLV1, which together regulate the formation of lateral root primordium and the outgrowth of lateral root in wheat. Additionally, a loss-of-function mutation of TaSG-D1, encoding a Ser/Thr protein kinase glycogen synthase kinase 3 (STKc_GSK3), also enhances the formation of lateral root primordium and the outgrowth of lateral roots in wheat. Furthermore, TaCLV1 interacts with TaSG-D1, leading to phosphorylation and degradation of TaSG-D1. Whereas the presence of TaCLE24b enhances the binding affinity and phosphorylation ability of TaCLV1 to TaSG-D1, thereby positively fine-tuning lateral root development and contributing to drought tolerance in wheat. Overall, our findings provide new insights into the significance of the peptide signaling pathway in regulating lateral root development and responding to drought stress in wheat.

Date: 2025
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DOI: 10.1038/s41467-025-57291-x

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