Japanese Journal of Phytopathology
Online ISSN : 1882-0484
Print ISSN : 0031-9473
ISSN-L : 0031-9473
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Remark on 100th of JJP Series 11
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  • A. MINE
    2019 Volume 85 Issue 3 Pages 190-196
    Published: August 25, 2019
    Released: October 16, 2019

    Plants deal with a myriad of microbial attacks by employing a two-tiered innate immune system. The first tier is called pattern-triggered immunity (PTI), and the second tier is called effector-triggered immunity (ETI). PTI is triggered upon recognition of conserved microbial molecules known as microbe-associated molecular patterns (MAMPs) by plasmamembrane-localized pattern recognition receptors. Since pathogenic and nonpathogenic microbes often present common MAMPs, PTI could be activated by both types of microbes. Therefore, PTI should be tunable to alleviate fitness costs associated with unnecessary activation of immunity against nonpathogenic microbes and, at the same time, should be effective against pathogens that deploy virulence effectors to interfere with immune signaling components. Recent studies have shown that these properties of PTI are achieved via sophisticated networking of immune signaling components such as phytohormones and MAP kinases. However, pathogens exploit these regulatory interactions between immune signaling components to favor infection. Intriguing studies have recently demonstrated that plants can intercept pathogen exploitation of immune signaling networks during ETI, thereby reestablishing disease resistance. This review focuses on the structures and dynamics of immune signaling networks behind molecular interactions between plants and pathogens.

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Short Communications
Feature article for 100th anniversary of Japanese Journal of Phytopathology
Abstracts of the Papers Presented at the 2019 Annual Meeting in Tsukuba