Department of Bioagricultural Sciences and Pest Management, Colorado State University, Fort Collins, CO 80523-1177, USA; email:
Annu Rev Phytopathol. 2018 Aug 25;56:269-288. doi: 10.1146/annurev-phyto-080417-045906. Epub 2018 Jun 29.
Bacterial soft rot is a disease complex caused by multiple genera of gram-negative and gram-positive bacteria, with Dickeya and Pectobacterium being the most widely studied soft-rot bacterial pathogens. In addition to soft rot, these bacteria also cause blackleg of potato, foot rot of rice, and bleeding canker of pear. Multiple Dickeya and Pectobacterium species cause the same symptoms on potato, complicating epidemiology and disease resistance studies. The primary pathogen species present in potato-growing regions differs over time and space, further complicating disease management. Genomics technologies are providing new management possibilities, including improved detection and biocontrol methods that may finally allow effective disease management. The recent development of inbred diploid potato lines is also having a major impact on studying soft-rot pathogens because it is now possible to study soft-rot disease in model plant species that produce starchy vegetative storage organs. Together, these new discoveries have changed how we face diseases caused by these pathogens.
细菌性软腐病是由多种革兰氏阴性和革兰氏阳性细菌引起的疾病复合体，其中迪氏菌属和果胶杆菌属是研究最为广泛的细菌性软腐病病原菌。除软腐病外，这些细菌还会引起马铃薯黑胫病、水稻基腐病和梨出血溃疡病。多种迪氏菌属和果胶杆菌属在马铃薯上引起相同的症状，这使得流行病学和抗病性研究变得复杂。在马铃薯种植区，主要的病原菌种类随时间和空间而变化，这进一步增加了疾病管理的难度。基因组学技术正在提供新的管理可能性，包括改进的检测和生物防治方法，这些方法最终可能实现有效的疾病管理。最近同源二倍体马铃薯品系的发展也对软腐病病原菌的研究产生了重大影响，因为现在可以在产生淀粉性营养贮藏器官的模式植物物种中研究软腐病。这些新发现共同改变了我们应对这些病原菌引起的疾病的方式。
