An MKP-MAPK protein phosphorylation cascade controls vascular immunity in plants
In: Science advances, Jg. 8 (2022-03-09), Heft 10
Online
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Zugriff:
Global crop production is greatly reduced by vascular diseases. These diseases include bacterial blight of rice and crucifer black rot caused by Xanthomonas oryzae pv. oryzae ( Xoo ) and Xanthomonas campestris pv. campestris ( Xcc ). The molecular mechanisms that activate vascular defense against such pathogens remains underexplored. Here, we show that an Arabidopsis MAPK phosphatase 1 (MKP1) mutant has increased host susceptibility to the adapted pathogen Xcc and is compromised in nonhost resistance to the rice pathogen Xoo . MKP1 regulates MAPK-mediated phosphorylation of the transcription factor MYB4 that negatively regulates vascular lignification through inhibiting lignin biosynthesis. Induction of lignin biosynthesis is, therefore, an important part of vascular-specific immunity. The role of MKP-MAPK-MYB signaling in lignin biosynthesis and vascular resistance to Xoo is conserved in rice, indicating that these factors form a tissue-specific defense regulatory network. Our study likely reveals a major vascular immune mechanism that underlies tissue-specific disease resistance against bacterial pathogens in plants.
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An MKP-MAPK protein phosphorylation cascade controls vascular immunity in plants
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Autor/in / Beteiligte Person: | Lin, Hui ; Wang, Muyang ; Chen, Ying ; Nomura, Kinya ; Hui, Shugang ; Gui, Jinshan ; Zhang, Xiawei ; Wu, Yue ; Liu, Jiyun ; Li, Qun ; Deng, Yiwen ; Li, Laigeng ; Yuan, Meng ; Wang, Shiping ; Sheng Yang He ; He, Zuhua |
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Zeitschrift: | Science advances, Jg. 8 (2022-03-09), Heft 10 |
Veröffentlichung: | 2022 |
Medientyp: | unknown |
ISSN: | 2375-2548 (print) |
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