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Pathogenicity of a Sclerotia-forming Fungus, Sclerotinia trifoliorum BWC98-105, to Burcucumber (Sicyos angulatus)
Res. Plant Dis. 2019;25:29-32
Published online March 31, 2019
© 2019 The Korean Society of Plant Pathology.

Dalsoo Kim1*, Jaeho Lee2, Woobong Choi3, Changil Hwang4, Namgyu Cho5, and Sang-Bong Choi6

1Jayounmanval, Seongnam 13503, Korea, 2Green Biotech, Paju 10911, Korea, 3Biomedical Engineering and Biotechnology Major, Division of Applied Bioengineering, Dongeui University, Busan 47340, Korea, 4Kwonnong Seed, Cheongju 28394, Korea, 5Moghu Research Center, Daejeon 34115, Korea, 6Division of Biosciences and Bioinformatics, Myongji University, Yongin 17058, Korea
Tel: +82-10-7758-5800, Fax: +82-31-707-5963, E-mail: dalsookim1963@gmail.com
Received November 2, 2018; Revised December 10, 2018; Accepted December 10, 2018.
cc This is an open access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/4.0/), which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.
Abstract
Burcucumber (Sicyos angluatus) is a representative ecosystem-disturbing plant in Korea and currently widely spread throughout the country. A sclerotia-forming fungus with moderate host selectivity, Sclerotinia trifoliorum BWC98-105, was tested in the laboratory, green house and natural habitat for its pathogenicity to burcucumber. When mycelial culture fragment was inoculated to burcucumber seedlings under the green house condition, mycelial growth was observed in the following day, and then resulted in the onset of wilting from 5 days after inoculation (DAI). Its characteristic sclerotia as a sign was observed from 7 DAI, and thus plants turned into dark-brown color at the bottom of stem of burcucumber that was eventually blighted at 14 DAI. Similar visible symptoms were observed in natural habitat. Based on the results of showing typical blight symptom to burcucumber and the sign of sclerotia, we report S. trifoliorum BWC98-105 causing stem blight against burcucumber. Its globular pellet was considered of having quite potential as a bioherbicide to control burcucumber in Korea.
Keywords : Bioherbicide, Burcucumber, Sclerotia, Sclerotinia


March 2019, 25 (1)