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Cytokinin response induces immunity and fungal pathogen resistance, and modulates trafficking of the PRR LeEIX2 in tomato.
Molecular Plant Pathology ( IF 4.8 ) Pub Date : 2020-08-25 , DOI: 10.1111/mpp.12978
Rupali Gupta 1 , Lorena Pizarro 1, 2 , Meirav Leibman-Markus 1 , Iftah Marash 1, 2 , Maya Bar 1
Affiliation  

Plant immunity is often defined by the immunity hormones: salicylic acid (SA), jasmonic acid (JA), and ethylene (ET). These hormones are well known for differentially regulating defence responses against pathogens. In recent years, the involvement of other plant growth hormones such as auxin, gibberellic acid, abscisic acid, and cytokinins (CKs) in biotic stresses has been recognized. Previous reports have indicated that endogenous and exogenous CK treatment can result in pathogen resistance. We show here that CK induces systemic immunity in tomato (Solanum lycopersicum), modulating cellular trafficking of the pattern recognition receptor (PRR) LeEIX2, which mediates immune responses to Xyn11 family xylanases, and promoting resistance to Botrytis cinerea and Oidium neolycopersici in an SA‐ and ET‐dependent mechanism. CK perception within the host underlies its protective effect. Our results support the notion that CK promotes pathogen resistance by inducing immunity in the host.

中文翻译:


细胞分裂素反应诱导免疫力和真菌病原体抵抗力,并调节番茄中 PRR LeEIX2 的运输。



植物免疫力通常由免疫激素定义:水杨酸(SA)、茉莉酸(JA)和乙烯(ET)。这些激素因差异调节针对病原体的防御反应而闻名。近年来,人们认识到其他植物生长激素如生长素、赤霉酸、脱落酸和细胞分裂素(CK)也参与生物胁迫。先前的报告表明,内源性和外源性 CK 治疗可导致病原体耐药性。我们在此表明​​,CK 诱导番茄 ( Solanum lycopersicum ) 的全身免疫,调节模式识别受体 (PRR) LeEIX2 的细胞运输,介导对 Xyn11 家族木聚糖酶的免疫反应,并促进 SA 中对灰葡萄孢(Botrytis cinerea) 和新番茄Oidium neolycopersici 的抗性。和 ET 依赖机制。宿主体内的 CK 感知是其保护作用的基础。我们的结果支持了 CK 通过诱导宿主免疫力来促进病原体抵抗力的观点。
更新日期:2020-08-25
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