Research in Plant Disease 2014;20(1):50-53.
Published online December 15, 2014.
Rhizopus oryzae에 의한 백합 무름병
함수상1* · 홍계완2 · 김병련1 · 한광섭1 · 최택용2 · 남윤규1 · 유승헌3
1충남농업기술원 농업환경연구과, 2충남농업기술원 태안백합시험장, 3충남대학교 농업생명과학대학 응용생물학과
 
Rhizopus Soft Rot on Lily Caused by Rhizopus oryzae in Korea
Soo-Sang Hahm1*, Gye-Wan Hong2, Byung-Ryun Kim1, Kwangseop Han1, Takyong Choi2, Yungyu Nam1 and Seunghun Yu3
1Agricultural Environment Research Division, Chungnam Agricultural Research and Extension Services, Yesan, Chungnam 340-861, Korea
2Taean Lily Expt. Station, Chungnam Agricultural Research and Extension Services, Taean 357-952, Korea
3Department of Applied Biology, College of Agriculture and Life Sciences, Chungnam National University, Daejeon 305-764, Korea
Correspondence:  <p>Soo-Sang Hahm</p><p>Tel : +82,

Soo-Sang Hahm

Tel : +82-41-635-6112
Fax: +82-41-635-7923
E-mail: hahmsoo@korea.kr

Received: February 03, 2014   Revised: March 18, 2014   Accepted: March 19, 2014
Abstract
Rhizopus soft rot of lily (Lilium longiflorum) caused by Rhizopus oryzae was observed in the experimental field in Taean Lily Experiment Station in Korea, 2012. The typical symptoms were water-soaked lesions on bottom stem and leaf rot. The lesion rapidly expanded and the plant was softened totally. The fungus grew vigorously at an optimum temperature (25°C) and brownish colony and black sporangia were formed on potato dextrose agar medium. Sporangiophores formed on end of sporangia were sub-globose, brownish and 6-10 μm in size. Sporangia were globose, blackish and 87-116 μm in size. Sporangiospores were irregularly oval and sub-globose, brownish 4-8 μm in size. On the basis of mycological characteristics, analyzing sequences of internal transcribed spacer region of ribosomal DNA, and pathogenicity test on host plants, the causal fungus was identified as R. oryzae. This is the first report of Rhizopus soft rot on lily caused by R. oryzae in Korea.
Key Words: Lily, Lilium longiflorum, Rhizopus soft rot, Rhizopus oryzae


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