重塑密歇根克拉维杆菌:基因组学时代如何为老敌人创造新面孔的故事。

IF 4.8 1区 农林科学 Q1 PLANT SCIENCES
Ebrahim Osdaghi, Hamid Abachi, Marie-Agnes Jacques
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引用次数: 0

摘要

目的:由革兰氏阳性棒状细菌引起的番茄青枯病和溃疡病是威胁露天和温室番茄生产的重要经济病害。该病发生在许多国家,在以高温和缺水为特征的区域尤为重要。细菌性溃疡病的治疗自1909年首次出现以来一直是一个主要问题。这部分是由于病原体的种子传播性质,允许细菌通过受感染的种子进行长距离传播,以及缺乏有效的处理方法来清洁种子。从种子中检测病原体是困难的,因为在培养基上与种子相关微生物群的不同成员竞争激烈。由于培养基上存在不同的菌落变异,病原体的鉴定也很困难。在这篇综述中,我们提供了历史的观点和最新的概述细菌性溃疡病的病因,流行病学和管理策略。我们还收集了最近在C. michiganensis的致病机制和生物生态学方面的分子发现,以促进21世纪番茄工业中细菌性溃疡病的管理。分类:放线菌纲;秩序:微球菌引起的;家庭:Microbacteriaceae;属:Clavibacter;种类:密歇根键杆菌。疾病症状:叶脉间褪绿导致坏死区域。茎和侧枝上的溃疡病。维管和髓组织变色变为暗黄色或褐色。小而早熟的果实或胎盘变色,成熟果实的内部由白色变为黄色。寄主范围:番茄(Solanum lycopersicum)是该病菌的主要寄主,茄子、辣椒和野生茄属植物也有自然侵染的报道。近义词(历史/非首选学名):planobacter michiganensis;假单胞菌michiganense;假单胞菌michiganensis;细菌michiganense;Phytomonas michiganensis;michiganense分枝杆菌;密歇根Erwinia michiganensis;棒状杆菌属michiganense;密歇根棒状杆菌。michiganense;密歇根棒状杆菌亚种michiganense;密歇根锁杆菌亚种。michiganensis。微生物特性:这种细菌在一般培养基上产生圆顶、圆形和有光泽的粘液菌落。菌落通常是黄色的,偶尔也观察到粉红色的菌株。细胞为革兰氏阳性,需氧,不运动,不产生孢子的弯曲杆(棒状)。分布:分布于各大洲。植物检疫分类:EPPO A2清单编号。50, EU 2019/2072 RNQP附录IV。参见EPPO (https://gd.eppo.int/taxon/CORBMI/categorization)和CABI (https://www.cabidigitallibrary.org/doi/10.1079/cabicompendium.15338)数据库了解进一步的国家特定分类。EPPO代码:CORBMI。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Clavibacter michiganensis Reframed: The Story of How the Genomics Era Made a New Face for an Old Enemy.

Objective: Bacterial wilt and canker of tomato caused by the gram-positive corynebacterial species Clavibacter michiganensis is an economically important disease threatening the tomato industry in both open-air and greenhouse productions around the world. The disease occurs in many countries, with a particular importance in regions characterised by high temperature and water scarcity. Management of bacterial canker has been a major problem since its original description in 1909. This is due in part to the seedborne nature of the pathogen, allowing the bacterium to be transmitted over long distances via infected seeds, as well as a lack of effective treatment to clean seeds. Detection of the pathogen from seeds is difficult due to high competition on culture media with diverse members of the seed-associated microbiota. Identification of the pathogen can also be difficult owing to the presence of different colony variants on culture media. In this review, we provide a historical perspective and an updated overview on the aetiology, epidemiology and management strategies of the bacterial canker disease. We also gathered recent molecular findings in the pathogenicity mechanisms and bioecology of C. michiganensis to boost management of the bacterial canker disease in the 21st century tomato industry.

Taxonomy: Class: Actinobacteria; Order: Micrococcales; Family: Microbacteriaceae; Genus: Clavibacter; Species: Clavibacter michiganensis.

Disease symptoms: Interveinal leaf chlorosis leading to necrotic areas. Canker on stems and lateral branches of the plant. Discolouration of vascular and pith tissues to dark yellow or brown. Small and early ripened fruits or discolouration of the placenta from white to yellow in the interior part of the ripening fruits.

Host range: Tomato (Solanum lycopersicum) is the main host of the pathogen while natural infection has also been reported on eggplant, pepper and wild nightshade plants.

Synonyms (historical/non-preferred scientific names): Aplanobacter michiganensis; Pseudomonas michiganense; Pseudomonas michiganensis; Bacterium michiganense; Phytomonas michiganensis; Mycobacterium michiganense; Erwinia michiganensis (=michiganense); Corynebacterium michiganense; Corynebacterium michiganense pv. michiganense; Corynebacterium michiganense subsp. michiganense; Clavibacter michiganensis subsp. michiganensis.

Microbiological properties: The bacterium produces domed, round and shiny mucoid colonies on general culture media. Colonies are usually yellow-pigmented, while pink-pigmented strains are occasionally observed. Cells are gram-positive, aerobic, non-motile, non-spore-producing curved rods (coryneform).

Distribution: Present in all continents.

Phytosanitary categorization: EPPO A2 List no. 50, EU 2019/2072 RNQP Annex IV. See EPPO (https://gd.eppo.int/taxon/CORBMI/categorization) and CABI (https://www.cabidigitallibrary.org/doi/10.1079/cabicompendium.15338) databases for further country-specific categorisations. EPPO code: CORBMI.

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来源期刊
Molecular plant pathology
Molecular plant pathology 生物-植物科学
CiteScore
9.40
自引率
4.10%
发文量
120
审稿时长
6-12 weeks
期刊介绍: Molecular Plant Pathology is now an open access journal. Authors pay an article processing charge to publish in the journal and all articles will be freely available to anyone. BSPP members will be granted a 20% discount on article charges. The Editorial focus and policy of the journal has not be changed and the editorial team will continue to apply the same rigorous standards of peer review and acceptance criteria.
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