Year-end Sale % OFF 
Abstract
AME Aquatic Microbial Ecology Contact the journal Facebook Twitter RSS Mailing List Subscribe to our mailing list via Mailchimp HomeLatest VolumeAbout the JournalEditorsSpecials AME 46:107-115 (2007) - doi:10.3354/ame046107 Evidence for tropical endemicity in the Deltaproteobacteria Marine Group B/SAR324 bacterioplankton clade Mark V. Brown1,2,*, Stuart P. Donachie2 1NASA Astrobiology Institute, PSB211, 2565 McCarthy Mall, and 2Department of Microbiology, Snyder Hall, 2538 McCarthy Mall, University of Hawaii, Honolulu, Hawaii 96822, USA *Email: mbrown@ifa.hawaii.edu ABSTRACT: The fine-scale phylogeny of the deeply branching Deltaproteobacteria Marine Group B/SAR324 (MGB/SAR324) bacterioplankton clade was analyzed using partial 16S rRNA gene sequence and internal transcribed spacer (ITS) sequences. Both sets of analyses revealed considerable sequence variation, which, along with bootstrap calculations, strongly support the discrimination of 3 species level clusters (i.e. displaying <98% within-cluster and >97% between-cluster 16S rRNA gene sequence identity) within this clade, which are here designated as MGB/SAR324 clade groups I and II and the MGB/SAR276 clade. The biogeographical ranges of these 3 clades were analyzed using newly acquired 16S and ITS sequences from Stn ALOHA (22.45°N, 158°W), along with sequences available in the public domain. MGB/SAR324 clade group I and the MBG/SAR276 clade display a clearly restricted distribution, occurring only in tropical and subtropical waters at depths <250 m. These groups represent the first reported species- and genus-level phylotypes displaying a tropical-only global distribution. MGB/SAR324 clade group II, which has been previously described as ubiquitous, occurs across the latitudinal gradient, but is generally restricted to deep, colder waters in the lower latitudes. Enzyme sequences associated at least with MGB/SAR324 clade group II appear to indicate a role for this group in dissolved organic phosphate cycling. KEY WORDS: Marine Group B · SAR324 · Biogeography · Internal transcribed spacer · ITS Full text in pdf format NextExport citation RSS - Facebook - Tweet - linkedIn Cited by Published in AME Vol. 46, No. 2. Online publication date: February 02, 2007 Print ISSN: 0948-3055; Online ISSN: 1616-1564 Copyright © 2007 Inter-Research.
Published Version (
Free)
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
