Authors: Keishi Takano Yasoo Itoh Tagiru Ogino Kunihiko Kurosawa Keiko Sasaki
Publish Date: 2006/08/28
Volume: 7, Issue: 3, Pages: 219-223
Abstract
Three strains of Mnoxidizing fungi were isolated from manganeserich aquatic environments sediment in a stream Komanoyu in Morimachi and inflow to an artificial wetland in Kaminokunicho Hokkaido Japan The characteristics of each strain were then established Genetic analysis based on the ribosomal RNA rRNA gene was performed to clarify their classification The sequences of the 18S rRNA and internal transcribed spacer ITS158S rRNAITS2 genes showed that all three strains are Ascomycetes Based on its morphology it seems probable that the KY1 strain from Morimachi belongs to the genus Phoma or Ampelomyces The phylogenetic analysis indicates that this strain belongs to Phoma rather than Ampelomyces Morphological identification of WL1 and WL2 strains from Kaminokunicho was impossible because of the lack of a sexual stage and specific organs Phylogenetic analysis of the sequence in the ITS158S rRNAITS2 gene suggests that the WL1 strain corresponds to Paraconyothyrium sporulosum and that WL2 also belongs to the genus Paraconiothyrium Because the ability to oxidize Mn has not been evaluated for most species of Phoma or Paraconiothyrium Coniothyrium further study is needed to confirm the status of these three strains
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