Reclassification of (Watsuji 2016) to comb. nov., with emended description of (Boden , 2017) Free

Abstract

The genus () in the in the of the contains four species of sulfur-oxidising obligate chemolithoautotroph with validly published names, all previously classified as () species. Here we demonstrate that , a recently published hydrogen-utilising chemolithoautotroph closely related to (type species of ) should be classified as a member of the genus and not , as comb. nov., on the basis of comparative physiology and morphology as well as 16S rRNA () gene identity of MAS2 being closer to that of JB-A2 (99.1 %) than to DSM 1534 (90.5 %) or MH-110 (94.1 %), and on the basis of the topology of 16S rRNA gene maximum likelihood trees, which clearly place within the genus . It was also noted that thiosulfate-grown spp. can be distinguished from spp. or spp. on the basis of the 3 dominant fatty acids (C, C and C), and from other spp. on the basis of the fourth dominant fatty acid, which varies between the species of this genus – which could provide a useful diagnostic method. We provide an emended description of (Boden R, Scott KM, Williams J, Russel S, Antonen K 2017;67:1140–1151) to take into account the properties of comb. nov.

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/content/journal/ijsem/10.1099/ijsem.0.002279
2017-10-01
2024-03-28
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