Research in Plant Disease (식물병연구)

The Korean Society of Plant Pathology (한국식물병리학회)
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First Report of Pectobacterium versatile as the Causal Pathogen of Soft Rot in Kimchi Cabbage in Korea

  • Kyoung-Taek Park (College of Agriculture and Life Sciences, Kyungpook National University) ;
  • Soo-Min Hong (College of Agriculture and Life Sciences, Kyungpook National University) ;
  • Chang-Gi Back (Horticultural and Herbal Crop Environment Division, National Institute of Horticultural and Herbal Science, Rural Development Administration) ;
  • Young-Je Cho (School of Food Science & Biotechnology / Food & Bio-Industry Research Institute, Kyungpook National University) ;
  • Seung-Yeol Lee (College of Agriculture and Life Sciences, Kyungpook National University) ;
  • Leonid N. Ten (College of Agriculture and Life Sciences, Kyungpook National University) ;
  • Hee-Young Jung (College of Agriculture and Life Sciences, Kyungpook National University)
  • Received : 2022.12.19
  • Accepted : 2022.12.30
  • Published : 2023.03.31
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Abstract

In September 2021, gray-to-brown discoloration and expanding water-soaked lesions were observed on the outer and inner layers and the core of kimchi cabbage (Brassica rapa subsp. pekinensis) in fields located in Samcheok, Gangwondo, Korea. A bacterial strain designated as KNUB-02-21 was isolated from infected cabbage samples. Phylogenetic analysis based on the sequences of the 16S rRNA region and the dnaX, leuS, and recA genes confirmed that the strain was affiliated with Pectobacterium versatile. Additionally, the biochemical and morphological profiles of the isolate were similar to those of P. versatile. Based on these results, the isolate was identified as a novel strain of P. versatile. Healthy kimchi cabbage slices developed soft rot upon inoculation with P. versatile KNUB-02-21 and exhibited symptoms similar to those observed in the diseased plants in fields. The re-isolated strains were similar to those of P. versatile. Prior to our study, P. versatile as the causative pathogen of kimchi cabbage soft rot had not been reported in Korea.

Keywords

Acknowledgement

This study was carried out with the support of "Cooperative Research Program for Agriculture Science and Technology Development (Project No. PJ017000)" Rural Development Administration, Republic of Korea.

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