Plant immune response to pathogens differs with changing temperatures.
Plant immune response to pathogens differs with changing temperatures.
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DOI：
10.1038/ncomms3530
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发表时间：
2013
影响因子：
16.6
通讯作者：
He, Ping
中科院分区：
文献类型：
--
作者：
Cheng, Cheng;Gao, Xiquan;Feng, Baomin;Sheen, Jen;Shan, Libo;He, Ping
温度波动是微生物入侵和宿主逃避的关键决定因素。与保持恒定体温的植物相反，植物温度每天都在振荡。植物如何对温度波动进行诱导防御仍然是一个谜。在这里，我们报告说，环境温度的变化导致两个不同的植物免疫反应的明显转变：模式触发免疫（PTI）和效应触发免疫（ETI）。植物在相对较低的温度（10~23 ° C）下优先激活ETI信号，而在适度升高的温度（23~32 ° C）下它们转换为PTI信号。拟南芥arp6和hta9hta11突变体，phenocopying植物生长在高温下，表现出增强的PTI，但减少ETI的反应。由于细菌效应子的分泌有利于低温，而细菌在高温下繁殖旺盛，伴随着微生物相关分子模式的产生，我们的研究结果表明，温度振荡可能驱动了响应病原体生理变化的不同植物免疫信号的动态协同进化。
Temperature fluctuation is a key determinant for microbial invasion and host evasion. In contrast to mammalians that maintain constant body temperature, plant temperature oscillates on a daily basis. It remains elusive how plants operate inducible defenses in response to temperature fluctuation. Here we report that ambient temperature changes lead to pronounced shifts of two distinct plant immune responses: pattern-triggered immunity (PTI) and effector-triggered immunity (ETI). Plants preferentially activate ETI signaling at relatively low temperatures (10~23°C), whereas they switch to PTI signaling at moderately elevated temperatures (23~32°C). The Arabidopsis arp6 and hta9hta11 mutants, phenocopying plants grown at the elevated temperatures, exhibit enhanced PTI and yet reduced ETI responses. As the secretion of bacterial effectors favors low temperatures whereas bacteria multiply vigorously at elevated temperatures accompanied with increased microbe-associated molecular pattern production, our findings suggest that temperature oscillation might have driven dynamic co-evolution of distinct plant immune signaling responding to pathogen physiological changes.
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影响因子：
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作者：
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发表时间：
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影响因子：
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作者：
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