PMID- 19796141 OWN - NLM STAT- MEDLINE DCOM- 20100625 LR - 20100512 IS - 1574-6941 (Electronic) IS - 0168-6496 (Linking) VI - 70 IP - 3 DP - 2009 Dec TI - Individual hydrothermal vents at Axial Seamount harbor distinct subseafloor microbial communities. PG - 413-24 LID - 10.1111/j.1574-6941.2009.00747.x [doi] AB - The microbial community structure of five geographically distinct hydrothermal vents located within the Axial Seamount caldera, Juan de Fuca Ridge, was examined over 6 years following the 1998 diking eruptive event. Terminal restriction fragment length polymorphism (TRFLP) and 16S rRNA gene sequence analyses were used to determine the bacterial and archaeal diversity, and the statistical software primer v6 was used to compare vent microbiology, temperature and fluid chemistry. Statistical analysis of vent fluid temperature and composition shows that there are significant differences between vents in any year, but that the fluid composition changes over time such that no vent maintains a chemical composition completely distinct from the others. In contrast, the subseafloor microbial communities associated with individual vents changed from year to year, but each location maintained a distinct community structure (based on TRFLP and 16S rRNA gene sequence analyses) that was significantly different from all other vents included in this study. Epsilonproteobacterial microdiversity is shown to be important in distinguishing vent communities, while archaeal microdiversity is less variable between sites. We propose that persistent venting at diffuse flow vents over time creates the potential to isolate and stabilize diverse microbial community structures between vents. FAU - Opatkiewicz, Andrew D AU - Opatkiewicz AD AD - School of Oceanography and Center for Astrobiology and Early Evolution, University of Washington, Seattle, WA 98195, USA. opatka@u.washington.edu FAU - Butterfield, David A AU - Butterfield DA FAU - Baross, John A AU - Baross JA LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PT - Research Support, U.S. Gov't, Non-P.H.S. DEP - 20090921 PL - England TA - FEMS Microbiol Ecol JT - FEMS microbiology ecology JID - 8901229 RN - 0 (DNA, Archaeal) RN - 0 (DNA, Bacterial) RN - 0 (RNA, Ribosomal, 16S) SB - IM MH - Archaea/classification/genetics/*isolation & purification MH - Bacteria/classification/genetics/*isolation & purification MH - *Biodiversity MH - DNA, Archaeal/genetics MH - DNA, Bacterial/genetics MH - Geologic Sediments/microbiology MH - Polymorphism, Restriction Fragment Length MH - RNA, Ribosomal, 16S/genetics MH - Seawater/chemistry/*microbiology MH - Temperature MH - *Water Microbiology EDAT- 2009/10/03 06:00 MHDA- 2010/06/26 06:00 CRDT- 2009/10/03 06:00 PHST- 2009/10/03 06:00 [entrez] PHST- 2009/10/03 06:00 [pubmed] PHST- 2010/06/26 06:00 [medline] AID - FEM747 [pii] AID - 10.1111/j.1574-6941.2009.00747.x [doi] PST - ppublish SO - FEMS Microbiol Ecol. 2009 Dec;70(3):413-24. doi: 10.1111/j.1574-6941.2009.00747.x. Epub 2009 Sep 21.