| Yeast diversity in the acidic Rio Agrio-Lake Caviahue volcanic environment (Patagonia, Argentina). | |
| | |
MedLine Citation:
|
PMID: 18537834 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
|
The Rio Agrio and Lake Caviahue system (RAC), in Northwestern Patagonia, is a natural acidic environment. The aims of this study were to characterize the yeast community and to provide the first ecological assessment of yeast diversity of this extreme aquatic environment. Yeast occurrence and diversity were studied at seven sites where the water pH varied between 1.8 and 6.7. Yeast CFU counts in the river ranged from 30 to 1200 CFU L(-1), but in the Lake the values were lower (30-60 CFU L(-1)). A total of 25 different yeast species were found, 11 of which belonged to undescribed taxa. Among these was an unusual strongly acidophilic Cryptococcus species. The RAC yeast community resembles that of acidic aquatic environments resulting from anthropic activities such as the São Domingos mines in Portugal and the Rio Tinto in Spain, respectively. The isolated yeast species were organized into different grades of adaptation to the RAC aquatic system. Based on the proposed grades, Rhodotorula mucilaginosa, Rhodosporidium toruloides and two novel Cryptococcus species were the most adapted species. These Cryptococcus species are apparently specialists of acidic aquatic environments, and might bear physiological features that possibly account for their ability to thrive in such extreme environments. |
| | |
Authors:
|
Gabriel Russo; Diego Libkind; José P Sampaio; Maria R van Broock |
Related Documents
:
|
7764394 - Chaetomella acutiseta produces chaetomellic acids a and b which are reversible inhibito... 17241564 - Bacterial symbiotes, their presence in head lice, and potential treatment avenues. 17092464 - Novel mitochondrial dna transversion mutation in transfer ribonucleic acid for leucine ... 18030534 - Insect-synthesised retronecine ester alkaloids: precursors of the common arctiine (lepi... 18214684 - On-chip acidification rate measurements from single cardiac cells confined in sub-nanol... 11207184 - Simultaneous monitoring of gastric and oesophageal ph reveals limitations of convention... |
Publication Detail:
|
Type: Journal Article; Research Support, Non-U.S. Gov't Date: 2008-06-04 |
Journal Detail:
|
Title: FEMS microbiology ecology Volume: 65 ISSN: 0168-6496 ISO Abbreviation: FEMS Microbiol. Ecol. Publication Date: 2008 Sep |
Date Detail:
|
Created Date: 2008-09-17 Completed Date: 2008-10-06 Revised Date: 2008-11-21 |
Medline Journal Info:
|
Nlm Unique ID: 8901229 Medline TA: FEMS Microbiol Ecol Country: England |
Other Details:
|
Languages: eng Pagination: 415-24 Citation Subset: IM |
Affiliation:
|
Laboratorio de Microbiología Aplicada y Biotecnología, Centro Regional Universitario Bariloche, Universidad Nacional del Comahue, Bariloche, Argentina. grusso@crub.uncoma.edu.ar |
Export Citation:
|
APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
|
Adaptation, Biological* Argentina Biodiversity* Colony Count, Microbial Cryptococcus / classification, growth & development, isolation & purification DNA, Fungal / genetics Fresh Water / microbiology Hydrogen-Ion Concentration Microbial Viability Phylogeny Rhodotorula / classification, growth & development, isolation & purification Rivers / microbiology Volcanic Eruptions Water Microbiology* Yeasts / classification*, growth & development, isolation & purification |
| Chemical | |
Reg. No./Substance:
|
0/DNA, Fungal |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
Previous Document: Exploring the diversity of bacterial communities in sediments of urban mangrove forests.
Next Document: Removal of phytotoxic compounds from torrefied grass fibres by plant-beneficial microorganisms.