Xiaojuan Zheng, Zhaoyang Zhou, Zhen Gong, Meijuan Hu, Ye Jin Ahn, Xiaojuan Zhang, Yan Zhao, Guoshu Gong, Jian Zhang, Jianru Zuo, Guan-Zhu Han, Sohn Kee Hoon, Jian-Min Zhou. Two plant NLR proteins confer strain-specific resistance conditioned by an effector from Pseudomonas syringae pv. actinidiae[J]. JOURNAL OF MECHANICAL ENGINEERING. doi: 10.1016/j.jgg.2022.06.006
Citation: Xiaojuan Zheng, Zhaoyang Zhou, Zhen Gong, Meijuan Hu, Ye Jin Ahn, Xiaojuan Zhang, Yan Zhao, Guoshu Gong, Jian Zhang, Jianru Zuo, Guan-Zhu Han, Sohn Kee Hoon, Jian-Min Zhou. Two plant NLR proteins confer strain-specific resistance conditioned by an effector from Pseudomonas syringae pv. actinidiae[J]. JOURNAL OF MECHANICAL ENGINEERING. doi: 10.1016/j.jgg.2022.06.006

Two plant NLR proteins confer strain-specific resistance conditioned by an effector from Pseudomonas syringae pv. actinidiae

doi: 10.1016/j.jgg.2022.06.006
Funds:

We thank Yuxin Hu for the sze1 sze2 mutant and Brian Staskawicz for the Nbzar1 mutant. We thank Qi-Jun Chen for providing the CRISPR/Cas9 vectors. The work was supported by grants from the National Key R&

D Program of China (2021YFA1300701) to J.M.Z., the National Natural Science Foundation of China (31872654) to Z.Y.Z., and the Hainan Excellent Talent Team, and the State Key Laboratory of Plant Genomics (SKLPG2016B-2) to J.M.Z.

  • Received Date: 13 May 2022
  • Rev Recd Date: 06 Jun 2022
  • Accepted Date: 15 Jun 2022
  • Available Online: 17 Mar 2023
  • Pseudomonas syringae pv. actinidiae (Psa) causes bacterial canker, a devastating disease threatening the Actinidia fruit industry. In a search for non-host resistance genes against Psa, we find that the nucleotide-binding leucine-rich repeat receptor (NLR) protein ZAR1 from both Arabidopsis and Nicotiana benthamiana (Nb) recognizes HopZ5 and triggers cell death. The recognition requires ZED1 in Arabidopsis and JIM2 in Nb plants, which are members of the ZRK pseudokinases and known components of the ZAR1 resistosome. Surprisingly, Arabidopsis ZAR1 and RPM1, another NLR known to recognize HopZ5, confer disease resistance to HopZ5 in a strain-specific manner. Thus, ZAR1, but not RPM1, is solely required for resistance to P.s. maculicola ES4326 (Psm) carrying hopZ5, whereas RPM1 is primarily required for resistance to P.s. tomato DC3000 (Pst) carrying hopZ5. Furthermore, the ZAR1-mediated resistance to Psm hopZ5 in Arabidopsis is insensitive to SOBER1, which encodes a deacetylase known to suppress the RPM1-mediated resistance to Pst hopZ5. In addition, hopZ5 enhances P.syringae virulence in the absence of ZAR1 or RPM1 and that SOBER1 abolishes such virulence function. Together the study suggests that ZAR1 may be used for improving Psa resistance in Actinidia and uncovers previously unknown complexity of effector-triggered immunity and effector-triggered virulence.

     

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