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首页> 美国卫生研究院文献>International Journal of Molecular Sciences >Plant Hormone Signaling Crosstalks between Biotic and Abiotic Stress Responses
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Plant Hormone Signaling Crosstalks between Biotic and Abiotic Stress Responses

机译：生物和非生物胁迫响应之间的植物激素信号串扰

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摘要

In the natural environment, plants are often bombarded by a combination of abiotic (such as drought, salt, heat or cold) and biotic (necrotrophic and biotrophic pathogens) stresses simultaneously. It is critical to understand how the various response pathways to these stresses interact with one another within the plants, and where the points of crosstalk occur which switch the responses from one pathway to another. Calcium sensors are often regarded as the first line of response to external stimuli to trigger downstream signaling. Abscisic acid (ABA) is a major phytohormone regulating stress responses, and it interacts with the jasmonic acid (JA) and salicylic acid (SA) signaling pathways to channel resources into mitigating the effects of abiotic stresses versus defending against pathogens. The signal transduction in these pathways are often carried out via GTP-binding proteins (G-proteins) which comprise of a large group of proteins that are varied in structures and functions. Deciphering the combined actions of these different signaling pathways in plants would greatly enhance the ability of breeders to develop food crops that can thrive in deteriorating environmental conditions under climate change, and that can maintain or even increase crop yield.
机译：在自然环境中，植物经常同时受到非生物（例如干旱，盐，热或寒冷）和生物（坏死性和生物营养性病原体）胁迫的轰炸。了解植物中针对这些胁迫的各种反应途径如何相互影响，以及在何处出现串扰点（将响应从一种途径切换到另一种途径）是至关重要的。钙传感器通常被认为是对外部刺激触发下游信号传递的第一反应。脱落酸（ABA）是调节压力反应的主要植物激素，它与茉莉酸（JA）和水杨酸（SA）信号传导途径相互作用，以引导资源缓解非生物胁迫的影响，从而抵御病原体。这些途径中的信号转导通常是通过GTP结合蛋白（G蛋白）进行的，GTP结合蛋白由结构和功能各异的一大组蛋白质组成。解读植物中这些不同信号途径的联合作用，将大大提高育种者发展可在气候变化导致环境条件恶化的情况下change壮成长并可以维持甚至提高农作物产量的粮食作物的能力。

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