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Free Content Sulfate-Reducing Bacteria from the Arabian Sea—Their Distribution in Relation to Thiosulfate-Oxidizing and Heterotrophic Bacteria

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Examination of water and sediment samples collected off the west coast of India and atolls of Lakshadweep Archipelago showed that the sulfate-reducing bacteria (SRB) occur not only in the bottom sediments but also in apparently aerobic surface waters and beach sediments. The abundance ranged from non-detectable levels to 0.5˙102 ˙ml−1 in water and from 0.1–94˙102˙g−1 dry sediment. Physiological tests of SRB isolates showed that these waters harbored not only lactate but also propionate and acetate utilizers. Over 50% of the isolates showed growth with formate. Tests showed affinities to Desulfovibrio, and Desulfotomaculum which comprised 20 and 29% of the isolates respectively. The others viz. Desulfobulbus, Desulfobacter and Desulfococcus together comprised about 42%. Simultaneous examinations of aerobic and anaerobic Thiobacilli-like organisms [TLOa and TLOan respectively] and culturable heterotrophic aerobic and anaerobic bacteria (AB and AnB respectively) showed that SRB were significantly correlated to TLOan (r = 0.6760, P < 0.001), and to AnB (r = 0.6649, P < 0.001).

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Document Type: Research Article

Publication date: November 1, 1990

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  • The Bulletin of Marine Science is dedicated to the dissemination of high quality research from the world's oceans. All aspects of marine science are treated by the Bulletin of Marine Science, including papers in marine biology, biological oceanography, fisheries, marine affairs, applied marine physics, marine geology and geophysics, marine and atmospheric chemistry, and meteorology and physical oceanography.
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