@ARTICLE{TreeBASE2Ref2144, author = {Chandralata Raghukumar and Yogesh Shouche and Purnima Singh and Pankaj Verma}, title = {Phylogenetic diversity of fungi from the deep-sea sediments of the Central Indian Basin and their growth characteristics.}, year = {2008}, keywords = {}, doi = {}, url = {}, pmid = {}, journal = {Fungal Diversity}, volume = {}, number = {}, pages = {}, abstract = {We are reporting here the diversity of cultured fungi in deep-sea sediments of the Central Indian Basin obtained from a depth of ~5000 m. A total of 16 filamentous fungi and 12 yeasts isolated from 20 sediment cores of ~35 cm length were identified by 18S and ITS sequencing of SSU rDNA. Most of the filamentous fungi belonged to Ascomycota, while two belonged to Basidiomycota. Sequences of 18S as well as ITS gave matching identification of non-sporulating cultures. Microscopic identification of sporulating cultures mostly matched with either of the sequences and not both. Phylogenetic analysis of ascomycetes by 18S sequencing grouped them under 7 clusters belonging to Aspergillus, Cladosporium, Sagenomella sp, Exophiala sp, Capronia sp., Acremonium sp. and Tritirachium sp. Based on ITS sequencing they grouped into 6 clusters belonging to Aspergillus sp, uncultured member of Hypocreaceae family, Exophiala sp, uncultured soil fungus, Hypocreales and Trichothecium sp. The two basidiomycetes belonged to Tilletiopsis sp. by 18S as well as ITS sequences. In contrast, most of the yeast isolates belonged to Basidiomycota and only one isolate belonged to the phylum Ascomycota. Filamentous fungi as well as the yeasts grew at 200 bar/5oC indicating their adaptations to deep-sea conditions. Isolation of Sagenomella, Exophiala, Capronia and Tilletiopsis spp from deep-sea sediments is the first report. Key words: Deep-sea sediments, fungi, 18S, ITS sequences, hydrostatic pressure, Central Indian Basin} }

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