Pectobacterium brasiliense as a Causative Agent for Soft Rot of Radish in Korea
- Kyoung-Taek Park Soo-Min Hong Chang-Gi Back In-Kyu Kang Seung-Yeol Lee Leonid N. Ten Hee-Young Jung
- 한국식물병리학회
- Research in Plant Disease(식물병연구)
- 제29권 제1호
- 등재여부 : KCI등재
- 2023.03
- 64 - 71 (8 pages)
In October 2021, soft rot disease seriously affected radish crop in Dangjin, Chungcheongnam-do, Korea. The infected radishes were stunted and turned dark green, with yellowish leaf foliage. A slimy, wet, and decayed pith region was observed in the infected roots. The bacterial strain KNUB-03-21 was isolated from infected roots. The biochemical and morphological characteristics of the isolate were similar to those of Pectobacterium brasiliense. Phylogenetic analysis based on the sequences of the 16S rRNA region and the concatenated DNA polymerase III subunit tau (dnaX), leucine-tRNA ligase (leuS), and recombinase subunit A (recA) genes confirmed that the isolate is a novel strain of P. brasiliense. Artificial inoculation of radish with P. brasiliense KNUB-03-21 resulted in soft rot symptoms similar to those observed in infected radish in the field; subsequently, P. brasiliense KNUB-03-21 was reisolated and reidentified. To our knowledge, this is the first report of P. brasiliense as a causal pathogen of radish soft rot in Korea.