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http://dx.doi.org/10.4489/KJM.2013.41.3.142

Diversity and Pathogenicity of Fusarium Species Associated with Grain Mold of Sorghum  

Choi, Hyo-Won (National Academy of Agricultural Science, RDA)
Hong, Sung Kee (National Academy of Agricultural Science, RDA)
Lee, Young Kee (National Academy of Agricultural Science, RDA)
Kim, Wan Gyu (National Academy of Agricultural Science, RDA)
Publication Information
The Korean Journal of Mycology / v.41, no.3, 2013 , pp. 142-148 More about this Journal
Abstract
Sorghum (Sorghum bicolor Moench) was traditionally grown on a small scale, however, at present its cultivation is getting momentum in terms of food and animal feed crop throughtout the Korea. Grain mold symptoms of the plant were frequently observed during disease surveys in Korea from 2007 to 2009. The symptoms were highly variable. Severely infected grain was fully covered with mold and partially infected grain may look normal or discolored. Ninety isolates of Fusarium species were obtained from the diseased plants collected from several locations in the country. Among the collected Fusarium isolates, 41 were identified as Fusarium thapsinum, 23 as F. proliferatum, 12 as F. graminearum, 5 as F. incarnatum, and 3 as F. equiseti based on their morphological and cultural characteristics. Elongation factor 1 alpha gene sequences of the isolates were used for phylogenetic analysis. Analyses of the sequences revealed that the isolates were confirmed to be identical with related species of NCBI GenBank. Pathogenicity tests showed that three dominant species, F. thapsinum, F. proliferatum and F. graminearum were strongly virulent to grains of sorghum. This study is the first report of sorghum grain mold caused by Fusarium species in Korea.
Keywords
Fusarium species; Grain mold; Sorghum;
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