Yeast forms dominate fungal diversity in the deep oceans
Bass, David, Howe, Alexis, Brown, Nick, Barton, Hannah, Demidova, Maria, Michelle, Harlan, Li, Lily, Sanders, Holly, Watkinson, Sarah C , Willcock, Simon and Richards, Thomas A. (2007) Yeast forms dominate fungal diversity in the deep oceans. Proceedings of the Royal Society B: Biological Sciences, 274, (1629), 3069-3077. (doi:10.1098/rspb.2007.1067). (PMID:17939990).
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Description/Abstract
Fungi are the principal degraders of biomass in most terrestrial ecosystems. In contrast to surface environments, deep-sea environmental gene libraries have suggested that fungi are rare and non-diverse in high-pressure marine environments. Here, we report the diversity of fungi from 11 deep-sea samples from around the world representing depths from 1500 to 4000 m (146–388 atm) and two shallower water column samples (250 and 500 m). We sequenced 239 clones from 10 fungal-specific 18S rRNA gene libraries constructed from these samples, from which we detected only 18 fungal 18S-types in deep-sea samples. Our phylogenetic analyses show that a total of only 32 fungal 18S-types have so far been recovered from deep-sea habitats, and our results suggest that fungi, in general, are relatively rare in the deep-sea habitats we sampled. The fungal diversity detected suggests that deep-sea environments host an evolutionarily diverse array of fungi dominated by groups of distantly related yeasts, although four putative filamentous fungal 18S-types were detected. The majority of our new sequences branch close to known fungi found in surface environments. This pattern contradicts the proposal that deep-sea and hydrothermal vent habitats represent ancient ecosystems, and demonstrates a history of frequent dispersal between terrestrial and deep-sea habitats
| Item Type: | Article |
|---|---|
| ISSNs: | 0962-8452 (print) 1471-2954 (electronic) |
| Subjects: | G Geography. Anthropology. Recreation > GC Oceanography Q Science > Q Science (General) |
| Divisions: | Faculty of Natural and Environmental Sciences > Biological Sciences > Environmental |
| Item ID: | 342536 |
| Date Deposited: | 07 Sep 2012 13:56 |
| Last Modified: | 07 Sep 2012 13:56 |
| Contributors: | Bass, David (Author) Howe, Alexis (Author) Brown, Nick (Author) Barton, Hannah (Author) Demidova, Maria (Author) Michelle, Harlan (Author) Li, Lily (Author) Sanders, Holly (Author) Watkinson, Sarah C (Author) Willcock, Simon (Author) Richards, Thomas A. (Author) |
| Date: | December 2007 |
| Status: | Published |
| URI: | http://eprints.soton.ac.uk/id/eprint/342536 |
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