Research in Plant Disease (식물병연구)

The Korean Society of Plant Pathology (한국식물병리학회)
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First Report of Pectobacterium aroidearum Causing Soft Rot on Zamioculcas zamiifolia

  • Kyoung-Taek Park (College of Agriculture and Life Sciences, Kyungpook National University) ;
  • Soo-Min Hong (College of Agriculture and Life Sciences, Kyungpook National University) ;
  • Leonid N. Ten (Institute of Plant Medicine, Kyungpook National University) ;
  • Chang-Gi Back (Horticultural and Herbal Crop Environment Division, National Institute of Horticultural and Herbal Science, Rural Development Administration) ;
  • Seung-Yeol Lee (College of Agriculture and Life Sciences, Kyungpook National University) ;
  • In-Kyu Kang (Department of Horticultural Science, Kyungpook National University) ;
  • Hee-Young Jung (College of Agriculture and Life Sciences, Kyungpook National University)
  • Received : 2023.09.22
  • Accepted : 2023.11.07
  • Published : 2023.12.31
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Abstract

Zamioculcas zamiifolia is a popular indoor ornamental plant in Korea. In August 2021, a severe outbreak of soft rot disease affected Z. zamiifolia in Emseong, Chungcheongbuk-do, Korea. Infected plants displayed wilting, water-soaked lesions, stem collapse, and green-brown discoloration. The bacterial strain KNUB-05-21 was isolated from infected stems and identified as Pectobacterium aroidearum using 16S rRNA nucleotide sequencing and multilocus sequence analysis based on partial sequences of dnaX, leuS, and recA genes. Confirmation of its affiliation with P. aroidearum was also obtained through biochemical and morphological characterization. To confirm the pathogenicity of strain KNUB-05-21, its suspension was injected into Z. zamiifolia stems. Within a week, soft rot developed on the stems, exhibiting symptoms similar to those observed in field-infected plants. The reisolated strain was identical to those of P. aroidearum. Before this study, P. aroidearum was not reported as a causative pathogen of Z. zamiifolia soft rot in Korea.

Keywords

Acknowledgement

This work was supported by the Korea Institute of Planning and Evaluation for Technology in Food, Agriculture and Forestry (IPET) through the Agriculture, Food and Rural Affairs Convergence Technologies Program for Educating Creative Global Leader Program funded by the Ministry of Agriculture, Food and Rural Affairs (MAFRA) (no. 321001-03).

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