Dense Community of Hyperthermophilic Sulfur-Dependent Heterotrophs in a Geothermally Heated Shallow Submarine Biotope near Kodakara-Jima Island, Kagoshima, Japan.

Applied and Environmental Microbiology
T HoakiT Maruyama

Abstract

Microbial communities in marine hydrothermal sediments (0 to 30 cm deep) in an inlet of Kodakara-Jima Island, Kagoshima, Japan, were studied with reference to environmental factors, especially the presence of amino acids. The study area was shallow, and the sea floor was covered with sand through which hot volcanic gas bubbled and geothermally heated water seeped out. The total bacterial density increased with depth in the sediments in parallel with a rise in the ambient temperature (80(deg)C at the surface and 104(deg)C at a depth of 30 cm in the sediments). As estimated by most-probable-number studies, hyperthermophilic sulfur-dependent heterotrophs growing at 90(deg)C dominated the microbial community (3 x 10(sup7) cells (middot) g of sediment(sup-1) at a depth of 30 cm in the sediments), followed in abundance by hyperthermophilic sulfur-dependent facultative autotrophs (3.3 x 10(sup2) cells (middot) g of sediment(sup-1)). The cooler sandy or rocky floor surrounding the hot spots was covered with white bacterial mats which consisted of large Beggiatoa-like filaments. Both the total organic carbon content, most of which was particulate (75% in the surface sediments), and the amino acid concentration in void seawater in the se...Continue Reading

References

May 1, 1977·Applied and Environmental Microbiology·J E HobbieS Jasper
Jun 1, 1979·Microbiological Reviews·W E BalchR S Wolfe
Jun 1, 1990·Proceedings of the National Academy of Sciences of the United States of America·C R WoeseM L Wheelis
Mar 1, 1994·Proceedings of the National Academy of Sciences of the United States of America·S M BarnsN R Pace
Mar 1, 1950·Bacteriological Reviews·R E HUNGATE
May 1, 1988·Applied and Environmental Microbiology·H W JannaschT A Langworthy
Nov 1, 1989·Applied and Environmental Microbiology·D C NelsonH W Jannasch
Aug 23, 1985·Science·H W Jannasch, M J Mottl

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Citations

Jul 11, 2006·International Journal of Systematic and Evolutionary Microbiology·Reiji TanakaYoshihiko Sako
Jul 8, 2009·International Journal of Molecular Sciences·Jack Green

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