Thiomicrospira pelophila, gen. n., sp. n., a new obligately chemolithotrophic colourless sulfur bacterium

Thiomicrospira kuenenii sp. nov. and Thiomicrospira frisia sp. nov., two mesophilic obligately chemolithoautotrophic sulfur-oxidizing bacteria isolated from an intertidal mud flat

“…reproducible growth was detectable at a Na' concentration as low as 40 mM, although the cells were very long and showed pleomorphism under these conditions as described previously (Kuenen & Veldkamp, 1972;Wood & Kelly, 1993). For T .…”

“…This is also the case for T. pelophila which could also grow well at a pH lower than 6.5 (Kuenen & Veldkamp, 1972;J. Kuever, unpublished results).…”

“…Data from Kuenen & Veldkamp (1972, 1973; Kuenen & Robertson (1989);Jannasch et al (1985); and own data. t Determined by HPLC ; values in parentheses were determined previously by thermal denaturation.…”

Sulfurimonas paralvinellae sp. nov., a novel mesophilic, hydrogen- and sulfur-oxidizing chemolithoautotroph within the Epsilonproteobacteria isolated from a deep-sea hydrothermal vent polychaete nest, reclassification of Thiomicrospira denitrificans as Sulfurimonas denitrificans comb. nov. and emended description of the genus Sulfurimonas

“…This bacterium was isolated from coastal marine sediments with an interface between oxygen and sulfide and is a mesophilic, neutrophilic, facultatively anaerobic, denitrifying chemolithoautotroph that uses sulfide or thiosulfate and nitrate or nitrite as the electron donor and acceptor (Brinkhoff et al, 2005;Kuenen et al, 1991;Timmer-ten Hoor, 1975). The genus Thiomicrospira (type species Thiomicrospira pelophila) was proposed for a group of sulfuroxidizing micro-organisms (Kuenen & Veldkamp, 1972). Muyzer et al (1995) suggested that this group belonged within the Gammaproteobacteria.…”

A novel hydrogen oxidizer amidst the sulfur-oxidizing Thiomicrospira lineage

“…Thiomicrospira species are widespread in marine environments and have been isolated from hydrothermal vents, intertidal mud flats, marine Arctic sediments and continental shelf sediments (Kuenen and Veldkamp, 1972;Ruby and Jannasch, 1982;Brinkhoff and Muyzer, 1997;Brinkhoff et al, 1999a;1999b;Knittel et al, 2005;Takai et al, 2004). All so far isolated Thiomicrospira species are capable of using reduced sulfur compounds as electron donors and are described as chemolithoautotrophs.…”