Journal
ANNUAL REVIEW OF PHYTOPATHOLOGY, VOL 53
Volume 53, Issue -, Pages 445-470Publisher
ANNUAL REVIEWS
DOI: 10.1146/annurev-phyto-080614-115928
Keywords
partial resistance; effector targets; durability; basal resistance; mechanisms
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Quantitative resistance (QR) refers to a resistance that is phenotypically incomplete and is based on the joined effect of several genes, each contributing quantitatively to the level of plant defense. Often, QR remains durably effective, which is the primary driver behind the interest in it. The various terms that are used to refer to QR, such as field resistance, adult plant resistance, and basal resistance, reflect the many properties attributed to it. In this article, we discuss aspects connected to those attributions, in particular the hypothesis that much of the QR to biotrophic filamentous pathogens is basal resistance, i. e., poor suppression of PAMP-triggered defense by effectors. Wediscuss what role effectors play in suppressing defense or improving access to nutrients. Based on the functions of the few plant proteins identified as involved in QR, vesicle trafficking and protein/metabolite transportation are likely to be common physiological processes relevant to QR.
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