Mycoscience
Online ISSN : 1618-2545
Print ISSN : 1340-3540
Dematiaceous hyphomycetes inhabiting decaying blackish needles of Abies firma and their distribution in the Kanto district, Japan
Susumu lwamoto Seiji Tokumasu
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2001 Volume 42 Issue 3 Pages 273-279

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Abstract

Dematiaceous mitosporic fungi darkening decaying fir needles on the ground were studied. Fungal communities on decaying, blackish fir needles were investigated in nine sites of the Kanto district, Japan, using a washing method. A total of 108 taxa was recorded from 540 sampled needles. Among abundantly occurring dematiaceous fungi, Anungitea continua, A. uniseptata, and Endophragmiella uniseptata were recognized as the major colonizers, forming a hyphal network on the surface of decaying fallen needles and darkening them. The effects of climate on the distributions of seven dematiaceous fungi, including the major colonizers, were analyzed. The abundance (proportion of needles colonized by a fungal species) of Chaetopsina fulva showed a significantly positive correlation with annual mean air temperature at each sampling site. No other significant correlations between the selected climatic factors and the distributions of dematiaceous fungi were recognized.

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© 2001, by The Mycological Society of Japan
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