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Bacterial wilt of dry beans caused by Curtobacterium flaccumfaciens pv. flaccumfaciens: A new threat from an old enemy.
Molecular Plant Pathology ( IF 4.8 ) Pub Date : 2020-02-25 , DOI: 10.1111/mpp.12926
Ebrahim Osdaghi 1 , Anthony J Young 2 , Robert M Harveson 3
Affiliation  

Bacterial wilt and tan spot of dry beans (family Fabaceae), caused by Curtobacterium flaccumfaciens pv. flaccumfaciens, is an important emerging disease threatening the edible legume industry around the globe. The management of bacterial wilt has been a major problem since its original description in 1922. This is in part due to the seedborne nature of the pathogen allowing the bacterium to be transmitted long distances via infected seeds, as well as a lack of detailed molecular information concerning the pathogenicity repertoires and virulence determinates of the pathogen. Identification can also be difficult owing to the presence of five different colony colour variants (i.e., yellow, orange, pink, purple, and red) on culture media. In this review, we provide an overview of the aetiology, epidemiology, and management strategies of bacterial wilt disease. First, a comprehensive and comparative symptomology of the disease on different dry bean species is described. Then, the taxonomic history of the causal agent and utility of high‐throughput sequencing‐based approaches in the precise characterization of the pathogen is explained. Furthermore, we provide an updated outline on the global distribution of the pathogen, highlighting expansion of the causal agent into the areas with no history of the disease until the beginning of the current century. Finally, because there are limited options for use of conventional pesticides against the pathogen, we highlight the use of integrated pest management strategies, for example quarantine inspections, resistant cultivars, and crop sanitation, to combat the risk of bacterial wilt disease in the dry bean industry.

中文翻译:


由Curtobacter flaccumfaciens pv.引起的干豆青枯病。 flaccumfaciens:来自老敌人的新威胁。



干豆(豆科)的青枯病和棕褐色斑病,由Curtobacter flaccumfaciens pv. 引起。 flaccumfaciens是一种威胁全球食用豆类产业的重要新发疾病。自 1922 年首次描述以来,青枯病的管理一直是一个主要问题。部分原因是病原体的种子传播性质,允许细菌通过受感染的种子长距离传播,以及缺乏详细的分子信息关于病原体的致病性和毒力决定因素。由于培养基上存在五种不同的菌落颜色变体(即黄色、橙色、粉色、紫色和红色),识别也可能很困难。在这篇综述中,我们概述了青枯病的病因学、流行病学和管理策略。首先,描述了不同干豆品种上该疾病的综合和比较症状。然后,解释了病原体的分类历史以及基于高通量测序的方法在病原体精确表征中的效用。此外,我们提供了病原体全球分布的最新概述,强调了病原体已扩展到本世纪初之前没有该疾病史的地区。最后,由于使用传统农药对抗病原体的选择有限,我们强调使用综合害虫管理策略,例如检疫检验、抗性品种和作物卫生,以对抗干豆青枯病的风险行业。
更新日期:2020-02-25
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