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Division of Applied Bioscience and Biotechnology, College of Agriculture and Life Sciences, Chonnam National University, Buk-gu, Gwangju 500-757, Korea
Jae Young Park
Hack Sung Jung 1
Department of Biological Sciences, College of Natural Sciences, Seoul National University, Kwanak-gu, Seoul 151-747, Korea
Richard C. Summerbell
Centraalbureau voor Schimmelcultures, P.O. Box 85167, 3508 AD Utrecht, The Netherlands
Two new epiphytes of anamorphic ascomycetes, Phaeomoniella zymoides sp. nov. and Phaeomoniella pinifoliorum sp. nov., were isolated from the needle surface of Pinus densiflora in Korea. The new taxa were characterized by acid-tolerant, slow, partially yeast-like growth and extensive production of emerging cells on convex wrinkled mycelial colonies. Phaeomoniella zymoides produced mycelium with large numbers of intercalary and lateral or terminal vesicles or swollen cells. Large conidiogenous cells had a swollen base and appeared to be phialidic, and many phialoconidia also were produced from lateral hyphal apertures. Maturing colonies of Ph. zymoides were made up of dark green to blackish areas and produced a Phoma-like synanamorph. Primary conidia became elongate mother cells giving rise to polar or lateral secondary conidia. Phaeomoniella pinifoliorum was characterized by reduced, swollen, phialide-like cells, lateral production of conidia from hyphae and terminal or subterminal, or less commonly lateral, secondary production of conidia from yeast-like primary conidia. When ITS and 28S rDNA sequences were compared and analyzed with those of best matching GenBank taxa, the Phaeomoniella group consisted of three lineages, "zymoides," "pinifoliorum" and "chlamydospora" clades, which again showed a complete sister relationship to Moristroma quercinum ined.
Key words: ITS, Moristroma, Phaeomoniella chlamydospora, Pinus densiflora, 28S rDNA
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