J Integr Plant Biol ›› 2018, Vol. 60 ›› Issue (4): 270-275.DOI: 10.1111/jipb.12623

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Differential requirement of BAK1 C‐terminal tail in development and immunity

Di Wu, Yanan Liu, Fan Xu and Yuelin Zhang*   

  • 收稿日期:2017-11-19 接受日期:2017-12-06 出版日期:2018-04-20 发布日期:2018-04-20

Differential requirement of BAK1 C‐terminal tail in development and immunity

Di Wu, Yanan Liu, Fan Xu and Yuelin Zhang*   

  1. Department of Botany, University of British Columbia, Vancouver, BC V6T 1Z4, Canada
  • Received:2017-11-19 Accepted:2017-12-06 Online:2018-04-20 Published:2018-04-20
  • About author:*Correspondence: Email: Yuelin Zhang (yuelin.zhang@ubc.ca)

摘要： In this study, we showed that the C‐terminal tail of BAK1 promotes its kinase activity and is required for PAMP‐triggered immunity, but is dispensable in brassinosteroid responses and cell death control, suggesting that the C‐terminal tail is differentially required for the functions of BAK1 in development and immunity.

Abstract:

BRI1‐ASSOCIATED RECEPTOR KINASE 1 (BAK1) plays critical roles in plant developmental and immune signaling pathways. BAK1 and a large number of leucine‐rich repeat receptor‐like kinases (LRR‐RLKs) harbor a mysterious carboxyl‐terminal tail (CT) beyond their kinase domain. In this study we analyzed the biological significance of this CT region using a unique bak1 mutant allele which causes deletion of the CT region. We showed that BAK1 CT promotes its kinase activity and is required for pathogen‐associated molecular pattern (PAMP)‐triggered immunity, but it is dispensable for brassinosteroid responses and BAK1/BKK1‐inhibited cell death signaling. Therefore the BAK1 C‐terminal tail is differentially required for its functions in development and immunity.

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