title: Occurrence of ToxigenicFusarium vorosiiamong Small Grain Cereals in Korea.
abstract: Fusarium graminearumspecies complex (FGSC) causes Fusarium head blight in small grain cereals. To date, four species (F. graminearum,F. asiaticum,F. boothii, andF. meridionale) belonging to FGSC frequently occur in Korean cereals. In addition, we first reported the occurrence of additional species (F. vorosii) within FGSC, which was isolated from barley, corn, and rice in Korea. Phylogenetic analysis of theFusariumisolates of this group using combined multi-gene sequences confirmed species identification. Moreover, the macroconidia produced by these isolates were morphologically similar to those of theF. vorosiiholotype. Chemical analysis indicated that theF. vorosiiisolates produced various trichothecenes such as nivalenol and deoxynivalenol with their acetyl derivatives along with zearalenone. Pathogenicity tests demonstrated that all of theF. vorosiiisolates examined were pathogenic on barley, corn, and rice with variation in aggressiveness. This study is the first report ofF. vorosiiin Korean cereals, their pathogenicity towards barley and corn, and their ability to produce trichothecenes and zearalenone.
authors.affiliation: Microbial Safety Division, National Institute of Agricultural Sciences, Rural Development Administration, Wanju 55365, Korea.
authors.forename: Theresa
authors.initials: T
authors.lastname: Lee
authors.affiliation: Microbial Safety Division, National Institute of Agricultural Sciences, Rural Development Administration, Wanju 55365, Korea.
authors.forename: Ji-Seon
authors.initials: JS
authors.lastname: Paek
authors.affiliation: Microbial Safety Division, National Institute of Agricultural Sciences, Rural Development Administration, Wanju 55365, Korea.
authors.forename: Kyung Ah
authors.initials: KA
authors.lastname: Lee
authors.affiliation: Microbial Safety Division, National Institute of Agricultural Sciences, Rural Development Administration, Wanju 55365, Korea.
authors.forename: Soohyung
authors.initials: S
authors.lastname: Lee
authors.affiliation: Microbial Safety Division, National Institute of Agricultural Sciences, Rural Development Administration, Wanju 55365, Korea.
authors.forename: Jung-Hye
authors.initials: JH
authors.lastname: Choi
authors.affiliation: Microbial Safety Division, National Institute of Agricultural Sciences, Rural Development Administration, Wanju 55365, Korea.
authors.forename: Hyeonheui
authors.initials: H
authors.lastname: Ham
authors.affiliation: Microbial Safety Division, National Institute of Agricultural Sciences, Rural Development Administration, Wanju 55365, Korea.
authors.forename: Sung Kee
authors.initials: SK
authors.lastname: Hong
authors.affiliation: Microbial Safety Division, National Institute of Agricultural Sciences, Rural Development Administration, Wanju 55365, Korea.
authors.forename: Jae-Gee
authors.initials: JG
authors.lastname: Ryu
keywords: Fusarium head blight; Fusarium vorosii; cereal; mycotoxin