Geobacillus debilis sp nov., a novel obligately thermophilic bacterium isolated from a cool soil environment, and reassignment of Bacillus pallidus to Geobacillus pallidus comb. nov.

被引:63
作者
Banat, IM [1 ]
Marchant, R [1 ]
Rahman, TJ [1 ]
机构
[1] Univ Ulster, Sch Biomed Sci, Coleraine BT52 1SA, Londonderry, North Ireland
关键词
D O I
10.1099/ijs.0.63231-0
中图分类号
Q93 [微生物学];
学科分类号
071005 ; 100705 ;
摘要
Several aerobic, motile, rod-shaped, thermophilic, spore-forming Geobacillus bacteria predominantly giving a Gram-positive staining reaction were isolated from a cool soil environment in Northern Ireland and taxonomically investigated. Two isolates, F10 and Tf-T, showed low 16S rRNA gene sequence similarity to recognized members of the genus Geobacillus. Phylogenetic tree investigation using neighbour-joining, maximum-likelihood and parsimony methods indicated that strains F10 and Tf-T represent a single novel species, for which the name Geobacillus debilis sp. nov. is proposed, with type strain Tf-T (= DSM 16016(T) =NCIMB 13995(T)) and which belongs to a subgroup of the genus Geobacillus comprising Geobacillus toebii and Geobacillus caldoxylosilyticus. However, G. debilis showed closest affinities to Bacillus pallidus, which we propose should become Geobacillus pallidus comb. nov.
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页码:2197 / 2201
页数:5
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