摘要
尖孢镰刀菌(Fusarium oxysporum)是一种世界性分布的土传病原真菌,可以侵染120多种不同的植物物种并引起疾病,其中包括番茄、香蕉、棉花和拟南芥.因此,了解植物与尖孢镰刀菌的互作机理对植物的生产和育种具有重要指导意义.植物激素信号传导网络已成为植物与病原物相互作用的关键调节系统.综述主要植物激素对尖孢镰刀菌与其不同宿主之间相互作用的影响.植物激素信号通路并不是独立的,它们相互之间存在复杂的串扰.植物外源施用水杨酸(salicylic acid,SA)表现对该病原体的抗性增加,且SA积累受损的转基因和突变体植物都具有增强的易感性,以及茉莉酸(jasmonatic acid,JA)和乙烯(ethylene,ET)在植物的抗病过程中起到双重调控的作用,植物可根据病原菌的类型决定防御反应的强度.脱落酸(abscisic acid,ABA)、生长素(auxins)也与SA、JA、ET相联系以协同或拮抗作用参与对植物与尖孢镰刀菌互作的调控.然而目前对各种植物激素信号传导的分子机制仍然知之甚少.随着现代分子生物学技术的快速发展,根据植物防御反应信号网络中重要调控蛋白的基因的作用进行定向基因工程育种,能促进植物病害生物防治的进展,为保障农业生产提供科学依据.
Fusarium oxysporum is a soil-borne fungal pathogen distributed worldwide that can infect and cause diseases in over 120 different plant species,including tomatoes,bananas,cotton,and Arabidopsis.Therefore,understanding the mechanisms underlying the interactions between plants and F.oxysporum is a meaningful area of research,which should also be instructive for plant production and breeding.The plant hormone signaling network is considered as a key regulatory system of plant-pathogen interactions.This study reviewed the effects of major plant hormones on the interactions between F.oxysporum and its different hosts.This review revealed that different phytohormone signaling pathways are not independent,and that there is complex crosstalk between them.It has also been shown that the exogenous application of salicylic acid(SA)increased plant resistance to the pathogen,and transgenic and mutant plants with impaired SA accumulation had enhanced susceptibility to the pathogen.Further,interactions between jasmonic acid(JA)and ethylene(ET)are also involved in the disease resistance process in plants.Their roles in plants can determine the strength of the defense response,depending on the type of pathogen.Abscisic acid(ABA)and auxins are also associated with SA,JA,and ET,and thus participate in synergy or antagonism with these in the regulation of plant and F.oxysporum interactions.However,the molecular mechanisms underlying this balance are still poorly understood.With the rapid development of modern molecular biotechnology,targeted genetic engineering and breeding based on the roles of important regulatory proteins’genes involved in plant defense response signaling networks could one day promote the biological control of plant diseases,and provide a scientific basis for safeguarding agricultural production.
作者
陈星彤
杜春梅
CHEN Xingtong;DU Chunmei(Engineering Research Center of Agricultural Microbiology Technology of Ministry of Education,Heilongjiang University,Harbin 150500,China;Key Laboratory of Microbiology,College of Heilongjiang Province,School of Life Sciences,Heilongjiang University,Harbin 150080,China)
出处
《应用与环境生物学报》
CAS
CSCD
北大核心
2021年第3期816-822,共7页
Chinese Journal of Applied and Environmental Biology
基金
国家重点研发计划项目子课题(2017YFD0201101)
国家自然科学基金项目(31370511)资助。
