Occurrence of Bacterial Soft Rot of Lily Bulb Caused by Pectobacterium carotovorum subsp. carotovorum and Pseudomonas marginalis in Korea

Hahm, Soo Sang; Han, Kwang Seop; Shim, Myoung Yong; Choi, Jong Jin; Kwon, Kyeong Hak; Choi, Jae Eul

The Plant Pathology Journal 2003;19(1):43-45.
Published online February 28, 2003.

Occurrence of Bacterial Soft Rot of Lily Bulb Caused by Pectobacterium carotovorum subsp. carotovorum and Pseudomonas marginalis in Korea

Soo Sang Hahm, Kwang Seop Han, Myoung Yong Shim, Jong Jin Choi, Kyeong Hak Kwon, Jae Eul Choi

Abstract

Soft rot symptom was observed on lily bulb in the fields and at a low temperature storage house from 1999 to 2000 in Korea. The small dark-brown lesion appeared on the bulb, and enlarged and developed into the inner scales of the bulb. The bulb became water soaked and gave out unpleasant odor. Two different pathogenic bacteria were isolated from infected tissues. The causal bacteria were identified as Pectobacterium carotovorum subsp. carotovorum (Erwinia carotovora subsp. carotovora) and Psudomonas marginalis based on bacteriological characteristics. Pathogenicity of the bacteria was proven by Koch`s postulations. This is the first report of bacterial soft rot of lily bulb in Korea caused by the two bacteria.

Key Words: Lily, soft rot, Pectobacterium carotovorumsubsp, carotovorum, Pseudomonas marginalis