Algal species and light microenvironment in a low-pH, geothermal microbial mat community

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dc.contributor.author Ferris, MJ
dc.contributor.author Sheehan, KB
dc.contributor.author Kühl, M
dc.contributor.author Cooksey, K
dc.contributor.author Wigglesworth-Cooksey, B
dc.contributor.author Harvey, R
dc.contributor.author Henson, JM
dc.date.accessioned 2011-02-07T06:20:14Z
dc.date.issued 2005-11
dc.identifier.citation Applied and Environmental Microbiology, 2005, 71 (11), pp. 7164 - 7171
dc.identifier.issn 0099-2240
dc.identifier.other C1UNSUBMIT en_US
dc.identifier.uri http://hdl.handle.net/10453/13259
dc.description.abstract Unicellular algae are the predominant microbial mat-forming phototrophs in the extreme environments of acidic geothermal springs. The ecology of these algae is not well known because concepts of species composition are inferred from cultivated isolates and microscopic observations, methods known to provide incomplete and inaccurate assessments of species in situ. We used sequence analysis of 18S rRNA genes PCR amplified from mat samples from different seasons and different temperatures along a thermal gradient to identify algae in an often-studied acidic (pH 2.7) geothermal creek in Yellowstone National Park. Fiber-optic microprobes were used to show that light for algal photosynthesis is attenuated to <1% over the 1-mm surface interval of the mat. Three algal sequences were detected, and each was present year-round. A Cyanidioschyzon merolae sequence was predominant at temperatures of ≥49°C. A Chlorella protothecoides var. acidicola sequence and a Paradoxia multisita-like sequence were predominant at temperatures of ≤39°C. Copyright © 2005, American Society for Microbiology. All Rights Reserved.
dc.language eng
dc.relation.isbasedon 10.1128/AEM.71.11.7164-7171.2005
dc.title Algal species and light microenvironment in a low-pH, geothermal microbial mat community
dc.type Journal Article
dc.description.version Published
dc.parent Applied and Environmental Microbiology
dc.journal.volume 11
dc.journal.volume 71
dc.journal.number 11 en_US
dc.publocation Washington DC, USA en_US
dc.identifier.startpage 7164 en_US
dc.identifier.endpage 7171 en_US
dc.cauo.name SCI.Environmental Sciences en_US
dc.conference Verified OK en_US
dc.for 0602 Ecology
dc.for 0605 Microbiology
dc.personcode 107129
dc.percentage 50 en_US
dc.classification.name Microbiology en_US
dc.classification.type FOR-08 en_US
dc.edition en_US
dc.custom en_US
dc.date.activity en_US
dc.location.activity en_US
pubs.embargo.period Not known
pubs.organisational-group /University of Technology Sydney
pubs.organisational-group /University of Technology Sydney/Faculty of Science
pubs.organisational-group /University of Technology Sydney/Strength - C3
utslib.copyright.status Closed Access
utslib.copyright.date 2015-04-15 12:17:09.805752+10
pubs.consider-herdc false
utslib.collection.history Uncategorised (ID: 363)
utslib.collection.history Closed (ID: 3)


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