病原中的活性氧释放研究进展

活性氧的释放在动植物-病原菌互作过程中有着非常重要的作用.一般认为互作中的活性氧来源于动植物细胞生物膜中的氧化还原体系.但近年来随着互作研究的深入,发现动植物病原菌自身也有活性氧的释放以及复杂的调控系统,它们的活性氧释放能力很有可能与其致病性有一定的联系,并可能参与了互作,这些发现对深入了解动植物-病原菌的互作机制具有重要意义.概述了在细菌、真菌等多种动物病原菌中存在的活性氧释放现象,这些微生物活性氧产生的位点、相关功能分子以及调控机制,介绍了目前研究仍然较少但其潜在意义重大的植物病原菌中的活性氧释放现象、可能的调节机制和病理学意义.

Research progress on active oxygen species in pathogens

Active oxygen species(AOS) play important roles in the interaction between host and pathogen.Though it was long considered that AOS released in the interaction between host and pathogen was primarily mediated by a membrane-bound redox complex in host,further,present studies showed that AOS,which had potential relation to pathogenicity of pathogen,was also detected in pathogen and took part in the interaction.AOS production was regulated by complicated mechanisms in pathogen.These findings provide potentially important clues in discovering the mechanism of host-pathogen interaction.In general,this review describes the ubiquitous phenomenon of AOS generation in many pathogens,including bacteria and fungi.The AOS regulatory mechanism,such as releasing sites and functional molecules,was demonstrated.AOS generation in plant pathogen is significant even though further studies are needed.The discussion was also made on the phenomenon,likely regulatory mechanism and the pathological significance of AOS generation in plant pathogens.