Community Structure of Filamentous, Sheath-Building Sulfur Bacteria, Thioploca spp., off the Coast of Chile.

Applied and Environmental Microbiology
H N SchulzN B Ramsing

Abstract

The filamentous sulfur bacteria Thioploca spp. produce dense bacterial mats in the shelf area off the coast of Chile and Peru. The mat consists of common sheaths, shared by many filaments, that reach 5 to 10 cm down into the sediment. The structure of the Thioploca communities off the Bay of Concepcion was investigated with respect to biomass, species distribution, and three-dimensional orientation of the sheaths. Thioploca sheaths and filaments were found across the whole shelf area within the oxygen minimum zone. The maximum wet weight of sheaths, 800 g m(sup-2), was found at a depth of 90 m. The bacterial filaments within the sheaths contributed about 10% of this weight. The highest density of filaments was found within the uppermost 1 cm of the mat. On the basis of diameter classes, it was possible to distinguish populations containing only Thioploca spp. from mixed populations containing Beggiatoa spp. Three distinct size classes of Thioploca spp. were found, two of which have been described previously as Thioploca araucae and Thioploca chileae. Many Thioploca filaments did not possess a visible sheath, and about 20% of the sheaths contained more than one Thioploca species. The three-dimensional sheath structure showed tha...Continue Reading

References

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Citations

Aug 18, 2005·Environmental Microbiology·Karen M KalanetraDouglas C Nelson
Mar 6, 2009·The ISME Journal·Signe HøgslundLars Peter Nielsen
Jul 4, 2009·FEMS Microbiology Ecology·Andreas TeskeVictor A Gallardo
Dec 9, 2009·Astrobiology·Jake V BaileyFrank A Corsetti
Jul 2, 1999·Applied and Environmental Microbiology·S OtteB B Jorgensen
Jun 25, 2013·Antonie van Leeuwenhoek·Verena SalmanAndreas Teske
Jan 7, 2015·Annual Review of Marine Science·Allan H Devol
Aug 21, 2015·Biogeosciences : BG·M KędzierskiA Briguglio
Sep 7, 2001·Annual Review of Microbiology·H N Schulz, B B Jorgensen
Jan 7, 2021·Proceedings. Biological Sciences·Bruno Becker-KerberMarc Laflamme

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