Research Advances on Phytophthora infestans RXLR Effector Proteins

doi:10.13560/j.cnki.biotech.bull.1985.2017-0981

Abstract

Abstract: Late blight caused by Phytophthora infestans（Mont.）de Bary is one of the most destructive diseases for potatoes. To successful infect and colonize host plant,P. infestans secretes many RXLR effector proteins into plant cells to disturb plant’s immune responses. Researchers have paid much attentions on the RXLR protein structure,function and RXLR protein-target interaction investigations since the first P. infestans RXLR gene AVR3a was cloned in 2005. With the development of high-throughput sequencing technology and effectoromics technology,the molecular mechanisms by which these RXLR effectors suppress plant immune responses have been greatly progressed. The recent convergence of RXLR effector proteins,leading a better understanding on the molecular mechanism of P. infestans-potato interaction,will provide perspectives for future potato disease resistance and breeding. Here we review the research progress on P. infestans RXLR effector proteins,especially focusing on the new findings in cloning,localization,variation and functional mechanism of AVR genes. We further discuss several important research directions on RXLR effectors in the future.

Key words: Phytophthora infestans, RXLR effector protein, avirulence gene, late blight

WANG Hong-yang, QIN Li-juan, TANG Wei, TIAN Zhen-dong. Research Advances on Phytophthora infestans RXLR Effector Proteins[J]. Biotechnology Bulletin, 2018, 34(2): 102-111.

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