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Seeing the Light: The Roles of Red- and Blue-Light Sensing in Plant Microbes
Annual Review of Phytopathology ( IF 9.1 ) Pub Date : 2018-08-27 00:00:00 , DOI: 10.1146/annurev-phyto-080417-045931
Gwyn A. Beattie 1 , Bridget M. Hatfield 1 , Haili Dong 1 , Regina S. McGrane 2
Affiliation  

Plants collect, concentrate, and conduct light throughout their tissues, thus enhancing light availability to their resident microbes. This review explores the role of photosensing in the biology of plant-associated bacteria and fungi, including the molecular mechanisms of red-light sensing by phytochromes and blue-light sensing by LOV (light-oxygen-voltage) domain proteins in these microbes. Bacteriophytochromes function as major drivers of the bacterial transcriptome and mediate light-regulated suppression of virulence, motility, and conjugation in some phytopathogens and light-regulated induction of the photosynthetic apparatus in a stem-nodulating symbiont. Bacterial LOV proteins also influence light-mediated changes in both symbiotic and pathogenic phenotypes. Although red-light sensing by fungal phytopathogens is poorly understood, fungal LOV proteins contribute to blue-light regulation of traits, including asexual development and virulence. Collectively, these studies highlight that plant microbes have evolved to exploit light cues and that light sensing is often coupled with sensing other environmental signals.

中文翻译:


看到光:红光和蓝光感测在植物微生物中的作用

植物在整个组织中收集,聚集和传导光,从而增强了其驻留微生物的光利用率。这篇综述探讨了光敏技术在植物相关细菌和真菌的生物学中的作用,包括在这些微生物中通过植物色素感测红光和通过LOV(光氧电压)域蛋白感测蓝光的分子机制。细菌植物色素是细菌转录组的主要驱动力,并在某些茎致病的共生体中介导某些植物病原体对光的抑制,对毒力,运动性和共轭的光调节抑制以及对光合装置的光调节诱导。细菌LOV蛋白还影响共生和致病表型的光介导变化。尽管对真菌性植物病原体的红光感知甚少,真菌LOV蛋白有助于调节性状,包括无性发育和毒力。总而言之,这些研究突出表明植物微生物已经进化为利用光信号,并且光感测通常与感测其他环境信号结合在一起。

更新日期:2018-08-27
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