Phylogenetic Evidence that Two Submerged-habitat Fungal Species, Speiropsis pedatospora and Xylomyces chlamydosporus Belong to the Order Jahnulales Insertae Sedis Dothideomycetes  

Oleh:

Prihatini, Riry ; Boonyuen, Nattawut ; Sivichai, Somsak

Jenis: Article from Journal - ilmiah nasional - terakreditasi DIKTI
Dalam koleksi: Microbiology Indonesia vol. 2 no. 3 (Dec. 2008), page 136-140.
Topik: ITS rDNA; speiropsis pedatospora; Xylomyces

Ketersediaan

Perpustakaan Pusat (Semanggi) Nomor Panggil: MM78.2 Non-tandon: 1 (dapat dipinjam: 0) Tandon: tidak ada

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Isi artikel

The genera Speiropsis ad Xylomyces are anomorph fungi. The taxonomic address for the fungi has been unclear. In this study, observation of morphological traits indicates that their have a unique pattern of mycelia with dark-brown to black colour and thick-walled hyphae. The same culture patterns of certain fungi isolated from freshwater habitats in Thailand were selected from BIOTEC Culture Collection (BBC, Thailand), while more species wereadded from Centraalbureau voor Schimmelcultures (CBS, Netherlands). These fungi were composed of Jahnula spp. (2-celled ascospores), Brachiosphaera tropicalis (hyaline and 4-5 armed codinia), S. pedatospora (hyaline and branches conidia) and Xylomyces sp. (dematiaceous and fusiform chlamydospores). This study was undertaken to confirm the taxonomic address for S. pedatospora and Xylomyces based on phylogenetics relationship as inferred from their ITS rDNA sequence data by using MP (unweighted and successive weighted MP), NJ, ML and Bayesian analysis. Phylogenic analysis revealed that isolates of S. pedatospora (2 straints) was a member of the Order Jahnulales and clustered with Jahnula spp. (5 straints) and B. tropicalis (4 strains) with > 82% bootstrap support and 100% posterior probabilities. Four isolates of X. chlamydosporus, X. elegans and X. aquaticus were shown to be polyphyleticwithin the Jahnulales and Pleoporales. The MP and NJ showed the same topology as in the Jahnulales clade obtained by ML analysis.

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