植物病原细菌应急反应研究进展

Research Progress on Stringent Response of Plant Pathogenic Bacteria

关键词:  植物病原细菌  应急反应  RSH  (p)ppGpp  全局调控

Key words:  plant pathogenic bacteria  stringent response  RSH  (p)ppGpp  global regulation

摘要:

细菌生活在营养匮乏的环境时，为了能够适应这种恶劣的环境，细菌自身会产生应急反应。细菌的应急反应至今仍是生物学研究热点之一，实施这一应急反应的是胞内的信号分子(p)ppGpp，其能与RNA聚合酶结合，调控许多细胞过程，包括病原细菌致病过程，可以作为防治动植物细菌性病害的药物靶点。植物病原细菌分布范围很广，能引起植物的许多重要病害发生，对许多农作物造成了重大经济损失。本文综述了植物病原细菌解淀粉欧文氏菌(Erwinia amylovora)、丁香假单胞杆菌(Pseudomonas syringae)、黑腐果胶杆菌(Pectobacterium atrosepticum)、柑橘黄单胞菌柑橘亚种(Xanthomonas citri subsp.citri)和十字花科黑腐病菌(X.campestris pv.campestris，Xcc)中应急反应的研究进展，为全面、深入地了解植物病原细菌的应急反应，有效防治植物细菌性病害提供参考。

Abstract:

When bacteria live in a nutrient-deficient environment,in order to adapt to this harsh environment,the bacteria themselves will have an emergency response.Bacterial stringent response is still one of the hot spots in biological research.This emergency response is carried out by intracellular signaling molecule (p)ppGpp,which can bind to RNA polymerase and regulate many cellular processes,including pathogenic bacteria,and can be used as a drug target for the prevention and treatment of bacterial diseases of animals and plants.Plant pathogenic bacteria are widely distributed and can cause many important diseases of plants,causing significant economic losses to many crops.In this article,the research progress about the stringent response of plant pathogenic bacteria was reviewed,including Erwinia amylovora,Pseudomonas syringae,Pectobacterium atrosepticum,Xanthomonas citri subsp. citri and X.campestris pv. campestris(Xcc). This review will provide a reference for a comprehensive and in-depth understanding of the emergency response of plant pathogenic bacteria and the effective control of plant bacterial diseases.