A Xanthomonas oryzae pv. oryzae effector, XopR, associates with receptor-like cytoplasmic kinases and suppresses PAMP-triggered stomatal closure.
Sci China Life Sci
; 59(9): 897-905, 2016 Sep.
Article
en En
| MEDLINE
| ID: mdl-27520828
ABSTRACT
Receptor-like kinases (RLKs) play important roles in plant immunity signaling; thus, many are hijacked by pathogen effectors to promote successful pathogenesis. Xanthomonas oryzae pv. oryzae (Xoo) is the causal agent of rice leaf blight disease. The strain PXO99A has 18 non-TAL (transcription activation-like) effectors; however, their mechanisms of action and host target proteins remain largely unknown. Although the effector XopR from the Xoo strain MAFF311018 was shown to suppress PAMP-triggered immune responses in Arabidopsis, its target has not yet been identified. Here, we show that PXO99A XopR interacts with BIK1 at the plasma membrane. BIK1 is a receptor-like cytoplasmic kinase (RLCK) belonging to the RLK family of proteins and mediates PAMP-triggered stomatal immunity. In turn, BIK1 phosphorylates XopR. Furthermore, XopR suppresses PAMP-triggered stomatal closure in transgenic Arabidopsis expressing XopR. In addition, XopR is able to associate with RLCKs other than BIK1. These results suggest that XopR likely suppresses plant immunity by targeting BIK1 and other RLCKs.
Palabras clave
Texto completo:
1
Colección:
01-internacional
Banco de datos:
MEDLINE
Asunto principal:
Proteínas Bacterianas
/
Xanthomonas
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Proteínas Serina-Treonina Quinasas
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Arabidopsis
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Proteínas de Arabidopsis
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Estomas de Plantas
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Moléculas de Patrón Molecular Asociado a Patógenos
Tipo de estudio:
Risk_factors_studies
Idioma:
En
Revista:
Sci China Life Sci
Asunto de la revista:
BIOLOGIA
/
CIENCIA
Año:
2016
Tipo del documento:
Article
País de afiliación:
China