[KSCI] Korea Science Citation Index Service

http://dx.doi.org/10.4489/MYCO.2010.38.1.078

Leaf Spot of Yam Caused by Pseudophloeosporella dioscoreae in Korea

Hong, Sung-Kee (Agricultural Microbiology Division, National Academy of Agricultural Science (NAAS), Rural Development Administration (RDA))
Kim, Wan-Gyu (Agricultural Microbiology Division, National Academy of Agricultural Science (NAAS), Rural Development Administration (RDA))
Lee, Young-Kee (Agricultural Microbiology Division, National Academy of Agricultural Science (NAAS), Rural Development Administration (RDA))
Choi, Hyo-Won (Agricultural Microbiology Division, National Academy of Agricultural Science (NAAS), Rural Development Administration (RDA))
Choi, Kyung-Jin (Agricultural Microbiology Division, National Academy of Agricultural Science (NAAS), Rural Development Administration (RDA))
Lee, Sang-Yeob (Agricultural Microbiology Division, National Academy of Agricultural Science (NAAS), Rural Development Administration (RDA))

Publication Information

Mycobiology / v.38, no.1, 2010 , pp. 78-80 More about this Journal

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.

Keywords

Leaf spot; Pseudophloeosporella dioscoreae; Yam;

Citations & Related Records

Reference

1	Coursey DG. Yams: an account of the nature, origins, cultivation and utilisation of the useful members of the Dioscoreaceae. Tropical Agricultural Series. Londres: Longmans Green Co, Ltd.; 1967.
2	Lee YN. New flora of Korea, Vol II. Seoul: Kyo-Hak Co, Ltd.; 2006.
3	Kim WG, Koo HM, Kim KH, Hyun IH, Hong SK, Cha JS, et al. List of plant diseases in Korea. 5th ed. Seoul: Korean Society of Plant Pathology; 2009.
4	Braun U. A monograph of Cercosporella, Ramularia and allied genera (phytopathogenic hyphomycetes), Vol. 1. Eching: IHW-Verlag; 1995.
5	Pons N, Sutton BC. Cercospora and similar fungi on yams (Dioscorea species). Mycol Papers 1988:160;1-78.
6	Tamura K, Dudley J, Nei M, Kumar S. MEGA4: molecular evolutionary genetics analysis (MEGA) software version 4.0. Mol Biol Evol 2007;24:1596-9. DOI ScienceOn
7	Braun U. New genera of phytopathogenic Deuteromycetes. Cryptog Bot 1993;4:107-14.