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首页> 美国卫生研究院文献>International Journal of Molecular Sciences >Signaling Crosstalk between Salicylic Acid and Ethylene/Jasmonate in Plant Defense: Do We Understand What They Are Whispering?
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Signaling Crosstalk between Salicylic Acid and Ethylene/Jasmonate in Plant Defense: Do We Understand What They Are Whispering?

机译：水杨酸和乙烯/茉莉酸酯在植物防御中的信号传递：我们是否了解它们在窃窃私语？

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摘要

During their lifetime, plants encounter numerous biotic and abiotic stresses with diverse modes of attack. Phytohormones, including salicylic acid (SA), ethylene (ET), jasmonate (JA), abscisic acid (ABA), auxin (AUX), brassinosteroid (BR), gibberellic acid (GA), cytokinin (CK) and the recently identified strigolactones (SLs), orchestrate effective defense responses by activating defense gene expression. Genetic analysis of the model plant Arabidopsis thaliana has advanced our understanding of the function of these hormones. The SA- and ET/JA-mediated signaling pathways were thought to be the backbone of plant immune responses against biotic invaders, whereas ABA, auxin, BR, GA, CK and SL were considered to be involved in the plant immune response through modulating the SA-ET/JA signaling pathways. In general, the SA-mediated defense response plays a central role in local and systemic-acquired resistance (SAR) against biotrophic pathogens, such as Pseudomonas syringae, which colonize between the host cells by producing nutrient-absorbing structures while keeping the host alive. The ET/JA-mediated response contributes to the defense against necrotrophic pathogens, such as Botrytis cinerea, which invade and kill hosts to extract their nutrients. Increasing evidence indicates that the SA- and ET/JA-mediated defense response pathways are mutually antagonistic.
机译：在植物的一生中，它们会遇到多种具有多种攻击方式的生物和非生物胁迫。植物激素，包括水杨酸（SA），乙烯（ET），茉莉酸酯（JA），脱落酸（ABA），生长素（AUX），油菜素甾醇（BR），赤霉素（GA），细胞分裂素（CK）和最近鉴定的内酯（SLs），通过激活防御基因表达来协调有效的防御反应。模型植物拟南芥的遗传分析使我们对这些激素的功能有了更深入的了解。 SA和ET / JA介导的信号通路被认为是针对生物入侵者的植物免疫反应的中枢，而ABA，生长素，BR，GA，CK和SL被认为是通过调节植物的免疫反应来参与植物免疫反应的。 SA-ET / JA信号通路。通常，SA介导的防御反应在局部和系统获得的对生物营养性病原体（例如丁香假单胞菌）的抗性（SAR）中起着核心作用，该病原体通过产生营养吸收结构而在宿主细胞之间定殖，同时保持宿主存活。 ET / JA介导的应答有助于防御坏死病原体，例如灰葡萄孢（Botrytis cinerea），后者入侵并杀死宿主以提取营养。越来越多的证据表明SA和ET / JA介导的防御反应途径是相互拮抗的。

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