title: Leaf Spot of Yam Caused by Pseudophloeosporella dioscoreae in Korea.
abstract: Leaf spot symptoms were frequently observed on yam plants grown in the Yeoju area in Korea during a disease survey in 2008. A total of five isolates of Pseudophloeosporella sp. were obtained from the infected leaves of yam plants. All of the isolates were identified as Pseudophloeosporella dioscoreae based on their morphological and cultural characteristics. A phylogenetic tree derived from the internal transcribed spacer sequences of the fungal isolates showed that the fungus is distinctly separated from species in other related genera. P. dioscoreae isolates caused very tiny spots on leaves of yam plants two weeks after artificial inoculation which were similar to those observed in the field. This is the first report that Pseudophloeosporella dioscoreae causes leaf spot in yams in Korea.
authors: Agricultural Microbiology Division, National Academy of Agricultural Science (NAAS), Rural Development Administration (RDA), Suwon 441-707, Korea.
authors: Sung Kee
authors: SK
authors: Hong
authors: Wan Gyu
authors: WG
authors: Kim
authors: Young Kee
authors: YK
authors: Lee
authors: Hyo Won
authors: HW
authors: Choi
authors: Kyung Jin
authors: KJ
authors: Choi
authors: Sang Yeob
authors: SY
authors: Lee
keywords: Leaf spot; Pseudophloeosporella dioscoreae; Yam
references: Mol Biol Evol. 2007 Aug;24(8):1596-9
references: 17488738