Open AccessBacterial ring rot of potato caused by Clavibacter sepedonicus : A successful example of defeating the enemy under international regulations
Author(s) -
Osdaghi Ebrahim,
Wolf Jan M.,
Abachi Hamid,
Li Xiang,
De Boer Solke H.,
Ishimaru Carol A.
Publication year - 2022
Publication title -
molecular plant pathology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.945
H-Index - 103
eISSN - 1364-3703
pISSN - 1464-6722
DOI - 10.1111/mpp.13191
Subject(s) - clavibacter michiganensis , biology , chlorosis , bacterial wilt , solanum tuberosum , solanum , corynebacterium , pathogen , bacteria , botany , microbiology and biotechnology , genetics
Background Bacterial ring rot of potato ( Solanum tuberosum ) caused by the gram‐positive coryneform bacterium Clavibacter sepedonicus is an important quarantine disease threatening the potato industry around the globe. Since its original description in 1906 in Germany, management of ring rot has been a major problem due to the seedborne nature (via seed tubers not true seeds) of the pathogen allowing the bacterium to be transmitted long distances via infected tubers. Disease symptoms On growing potato plants: interveinal chlorosis on leaflets leading to necrotic areas and systemic wilt. On infected tubers: vascular tissues become yellowish brown with a cheesy texture due to bacterial colonization and decay. Host range Potato is the main host of the pathogen, but natural infection also occurs on eggplant, tomato, and sugar beet. Taxonomic status of the pathogen Class: Actinobacteria ; Order: Actinomycetales ; Family: Microbacteriaceae ; Genus: Clavibacter ; Species: Clavibacter sepedonicus (Spieckermann and Kotthoff 1914) Li et al. 2018. Synonyms (nonpreferred scientific names) Aplanobacter sepedonicus ; Bacterium sepedonicum ; Corynebacterium sepedonicum ; Corynebacterium michiganense pv. sepedonicum ; Clavibacter michiganensis subsp. sepedonicus . Microbiological properties Gram‐positive, club‐shaped cells with creamy to yellowish‐cream colonies for which the optimal growth temperature is 20–23°C. Distribution Asia (China, Japan, Kazakhstan, Nepal, North Korea, Pakistan, South Korea, Uzbekistan, the Asian part of Russia), Europe (Belarus, Bulgaria, Czech Republic, Estonia, Finland, Georgia, Germany, Greece, Hungary, Latvia, Lithuania, Norway, Poland, Romania, European part of Russia, Slovakia, Spain, Sweden, Turkey, Ukraine), and North America (Canada, Mexico, USA). Phytosanitary categorization CORBSE: EPPO A2 list no. 51. EU; Annex designation I/A2.