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논문 기본 정보

자료유형
학술저널
저자정보
Ko, Eun Ju (College of Applied Life Science, Major of Plant Resources and Environment, Jeju National University) Shin, Yong Ho (College of Applied Life Science, Major of Plant Resources and Environment, Jeju National University) Hyun, He Nam (College of Applied Life Science, Major of Plant Resources and Environment, Jeju National University) Song, Hyo Soon (Eco Energy Holdings Co., Ltd) Hong, Jeum Kyu (Department of Horticultural Science, Gyeongnam National University of Science and Technology [GNTech]) Jeun, Yong Chull (College of Applied Life Science, Major of Plant Resources and Environment, Jeju National University)
저널정보
한국균학회 Mycobiology Mycobiology 제47권 제3호
발행연도
2019.1
수록면
308 - 318 (11page)

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Bio-sulfur can be produced in the process of desulfurization from a landfill and collected by some microorganism such as Thiobacillus sp. as a sulfur element. In order to investigate practical use of bio-sulfur as an agent for controlling plant disease, in vitro antifungal activity of bio-sulfur was tested against Colletotrichum orbiculare known to cause cucumber anthracnose. Efficacy of bio-sulfur for suppressing anthracnose disease was also evaluated in vivo using cucumber leaves. Mycelial growth of C. orbiculare on medium containing bio-sulfur was inhibited. Disease severity of cucumber leaves pre-treated with bio-sulfur was significantly decreased compared to that of untreated ones. To illustrate how bio-sulfur could suppress anthracnose disease, structures of cucumber leaves infected with C. orbiculare were observed under a fluorescent microscope and a scanning electron microscope (SEM). Cucumber leaves pre-treated with bio-sulfur showed a low rate of appressorium formation whereas untreated ones showed abundant appressoria. Shrunk fungal hyphae were mostly observed on bio-sulfur-pretreated leaves by SEM. Similar results were observed on leaves pre-treated with a commercial fungicide Benomyl(R). These results suggest that inhibition of appressorium formation of C. orbiculare by bio-sulfur may contribute to its suppression of cucumber anthracnose.

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