Publication Date:
2022-05-25
Description:
Author Posting. © The Author(s), 2010. This is the author's version of the work. It is posted here by permission of John Wiley & Sons for personal use, not for redistribution. The definitive version was published in FEMS Microbiology Ecology 73 (2010): 538-549, doi:10.1111/j.1574-6941.2010.00910.x.
Description:
Low-temperature hydrothermal vent fluids represent access points to diverse microbial
communities living in oceanic crust. This study examined the distribution, relative abundance,
and diversity of Epsilonproteobacteria in 14 low-temperature vent fluids from 5 volcanically
active seamounts of the Mariana Arc using a 454 tag sequencing approach. Most vent fluids
were enriched in cell concentrations compared to background seawater, and quantitative PCR
results indicated all fluids were dominated by bacteria. Operational taxonomic unit (OTU)-based
statistical tools applied to 454 data show that all vents from the northern end of the Marian Arc
grouped together, to the exclusion of southern arc seamounts, which were as distinct from one
another as they were from northern seamounts. Statistical analysis also showed a significant
relationship between seamount and individual vent groupings, suggesting that community
membership may be linked to geographical isolation and not geochemical parameters. However,
while there may be large-scale geographic differences, distance is not the distinguishing factor in
microbial community composition. At the local scale, most vents host a distinct population of
Epsilonprotoebacteria, regardless of seamount location. This suggests there may be barriers to
exchange and dispersal for these vent endemic microorganisms at hydrothermal seamounts of the
Mariana Arc.
Description:
This work was supported by a National Research
Council Research Associateship Award and L’Oréal USA Fellowship (J.A.H.), NASA
Astrobiology Institute Cooperative Agreement NNA04CC04A (M.L.S.), the Alfred P. Sloan
Foundation’s ICoMM field project, and the W. M. Keck Foundation. This publication is
[partially] funded by the Joint Institute for the Study of the Atmosphere and Ocean (JISAO)
under NOAA Cooperative Agreement No. NA17RJ1232, Contribution #1814.
Repository Name:
Woods Hole Open Access Server
Type:
Preprint
Format:
application/pdf
Permalink