A receptor-like cytoplasmic kinase phosphorylates the host target RIN4, leading to the activation of a plant innate immune receptor.
A receptor-like cytoplasmic kinase phosphorylates the host target RIN4, leading to the activation of a plant innate immune receptor.
复制标题
DOI:
10.1016/j.chom.2011.01.010
复制
发表时间:
2011-02-17
影响因子:
30.3
通讯作者:
Coaker G
中科院分区:
文献类型:
--
作者:
Liu J;Elmore JM;Lin ZJ;Coaker G
Plants have evolved sophisticated surveillance systems to recognize pathogen effectors delivered into host cells. RPM1 is an NB-LRR immune receptor that recognizes the Pseudomonas syringae effectors AvrB and AvrRpm1. Both effectors associate with and affect the phosphorylation of RIN4, an immune regulator. Although the kinase and the specific mechanisms involved are unclear, it has been hypothesized that RPM1 recognizes phosphorylated RIN4. Here we identify RIPK as a RIN4-interacting receptor-like protein kinase that phosphorylates RIN4. In response to bacterial effectors, RIPK phosphorylates RIN4 at amino acid residues T21, S160, and T166. RIN4 phosphomimetic mutants display constitutive activation of RPM1-mediated defense responses and RIN4 phosphorylation is induced by AvrB and AvrRpm1 during P. syringae infection. RIPK knockout lines exhibit reduced RIN4 phosphorylation and blunted RPM1-mediated defense responses. Taken together, our results demonstrate that the RIPK kinase associates with and modifies an effector-targeted protein complex to initiate host immunity.
登录
查看更多内容
影响因子:
64.5
作者:
Axtell, MJ;Staskawicz, BJ
通讯作者:
Staskawicz, BJ
影响因子:
3.6
作者:
Axtell, MJ;Chisholm, ST;Staskawicz, BJ
通讯作者:
Staskawicz, BJ
DOI:
10.1073/pnas.0409468102
发表时间:
2005-02-08
影响因子:
11.1
作者:
Chisholm, ST;Dahlbeck, D;Staskawicz, BJ
通讯作者:
Staskawicz, BJ
影响因子:
3.7
作者:
Kinch LN;Yarbrough ML;Orth K;Grishin NV
通讯作者:
Grishin NV
影响因子:
7.2
作者:
de Torres, M;Sanchez, P;Grant, M
通讯作者:
Grant, M