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| Content Provider | frontiers |
|---|---|
| Author | Chen, Lijuan Xiao, Jiahui Song, Yuxiao Li, You Liu, Jun Cai, Huiren Wang, Hong-Bin Liu, Bing |
| Abstract | A phosphorylation/dephosphorylation cycle at tyrosine 428 of CHITIN ELICITOR RECEPTOR KINASE 1 (CERK1) plays an essential role in chitin triggered immunity in Arabidopsis thaliana. In this study, we used a differential peptide pull-down (PPD) assay to identify factors that could participate downstream of this cycle. We identified ZYGOTIC ARREST 1 (ZAR1) and showed that it interacts with CERK1 specifically when the tyrosine 428 (Y428) residue of CERK1 is dephosphorylated. ZAR1 was originally characterized as an integrator for calmodulin and G-protein signals to regulate zygotic division in Arabidopsis. Our current results established that ZAR1 also negatively contributed to defense against the fungus Botrytis cinerea and played a redundant role with its homolog ZAR2 in this process. The zar1-3 zar2-1 double mutant exhibited stronger resistance to B. cinerea compared with zar1-3 single mutant, zar2-1 single mutant, and wild-type plants. Moreover, the inducible expression of numerous defense response genes upon B. cinerea infection was increased in the zar1-3zar2-1 double mutant, consistent with a repressive role for ZAR proteins in the defense response. Therefore, our findings provided insight into the function of ZAR1 in multiple defenses and developmental regulation pathways. |
| ISSN | 1664462X |
| DOI | 10.3389/fpls.2021.736560 |
| Volume Number | 12 |
| Journal | Frontiers in Plant Science |
| Language | English |
| Publisher Date | 2021-10-26 |
| Access Restriction | Open |
| Subject Keyword | Arabidopsis Botrytis cinerea ZYGOTIC ARREST 1 Plant resistance CERK1 |
| Content Type | Text |
| Resource Type | Article |
| Subject | Plant Science |
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