101 research outputs found

    Thiorhodococcus mannitoliphagus sp. nov., a new purple sulfur bacterium from the White Sea

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    A novel purple sulfur bacterium, strain WS(T), was isolated from a microbial mat from an estuary of the White Sea. Individual cells are coccoid shaped, motile by flagella and do not contain gas vesicles. The mean cell diameter is 1.85 mum (range 1.5-2.0 mum). Cell suspensions exhibit a purple-violet colour. They contain bacteriochlorophyll a and carotenoids of the rhodopinal series as photosynthetic pigments. The novel bacterium is an anoxygenic photoautotroph, using sulfide, thiosulfate, sulfite and elemental sulfur as electron donors for photosynthesis and is capable of photoassimilating several organic carbon sources in the presence of carbonate and a reduced sulfur source (sulfide and/or thiosulfate). Sulfur globules, formed during oxidation of sulfide, are stored transiently inside the cells. Optimal salinity and pH for growth are at 0.5-2.0 % NaCl and pH 7.0-7.5. The DNA base composition of strain WS(T) is 61.8 mol% G+C. 16S rRNA gene sequence analysis showed that the new isolate belongs to the genus Thiorhodococcus, with Thiorhodococcus minor CE2203(T) as the nearest relative (sequence similarity of 97.3 %). Several distinct differences from described species necessitate the description of a novel species. Thiorhodococcus mannitoliphagus sp. nov. is the proposed name, with strain WS(T) (=ATCC BAA-1228(T)=VKM B-2393(T)) as the type strain

    M. J. Woltmann and U. Zaar

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    Between June and September 2013, the Water Resources Division of the Department of Land Resource Management undertook a field investigation and asssessment of the water resources supplying the Wutunugurra community. The objective of this assessment was to determine the sustainable yield from the groundwater system to inform decisions on community infrastructure planning and development.Made available by the Northern Territory Library via the Publications (Legal Deposit) Act 2004 (NT).Introduction 2 -- Hydrogeology 6 -- 3 Surface Water Hydrology 26 -- Water Supply Development Potential 32 -- Conclusions 34 -- Recommendations 36 -- Further Work 38 -- References 4
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