Taxonomic Reframe of Some Species of the Genera Haloferax and Halobellus.

Haloferax and Halobellus are the representatives of the family Haloferacaceae and they are dominant in hypersaline ecosystems. Some Haloferax and Halobellus species exhibit a close evolutionary relationship. Genomic, phylogenetic (based on 16S rRNA gene sequence), and phylogenomic analysis were performed to evaluate the taxonomic positions of the genera Haloferax and Halobellus.

Reclassification of Some Exiguobacterium Species Based on Genome Analysis.

The Exiguobacterium genus comprises Gram-stain-positive and facultatively anaerobic bacteria. Some Exiguobacterium species have previously shown significant high 16S rRNA gene sequence similarities with each other. This study evaluates the taxonomic classification of those Exiguobacterium species through comprehensive genome analysis.

Proposal to transfer Bacillus massiliigorillae to the genus Peribacillus as Peribacillus massiliigorillae comb. nov., and Bacillus sinesaloumensis to the genus Ferdinandcohnia as Ferdinandcohnia sinesaloumensis comb. nov.

The present study was carried out to clarify the taxonomic position of Bacillus massiliigorillae and Bacillus sinesaloumensis. The 16S rRNA gene sequences extracted from the Bacillus sinesaloumensis Marseille-P3516 (FTOX00000000) and Bacillus massiliigorillae G2 (CAVL000000000) genomes showed 98.5 and 99.

Proposal to transfer Bacillus dafuensis and Bacillus massiliigabonensis to the genus Cytobacillus as Cytobacillus dafuensis comb. nov., and Cytobacillus massiliigabonensis comb. nov., respectively.

In the present study, the taxonomic position of Bacillus dafuensis and Bacillus massiliigabonensis was evaluated using genome-based comparison. The 16S rRNA gene sequence obtained from the Bacillus dafuensis FJAT-25496T genome showed 99.7% similarity with the type strain of Cytobacillus citreus, while Bacillus massiliigabonensis Marseille-P2639T showed 98.

Transfer of Bacillus tepidiphilus Narsing Rao et al. 2021 to the genus Peribacillus as Peribacillus tepidiphilus comb. nov.

In the present study, the taxonomic position of Bacillus tepidiphilus was re-evaluated. Bacillus tepidiphilus (B. tepidiphilus) SYSU G01002 showed the highest 16S rRNA gene sequence similarity with the type strain Peribacillus alkalitolerans (P.

sp. nov., isolated from cave soil.

A Gram-stain-positive, motile, rod-shaped and endospore-forming strain, SYSU K30002, was isolated from a soil sample collected from a karst cave in Xingyi county, Guizhou province, south-west China. SYSU K30002 grew at 28-40 °C (optimum, 37 °C), at pH 5.0-8.

Amycolatopsis alkalitolerans sp. nov., isolated from Gastrodia elata Blume.

A Gram-staining positive and nonmotile strain designated SYSUP0005 was isolated from tubers of Gastrodia elata Blume. The 16S rRNA gene sequence result showed that strain SYSUP0005 shared highest sequence similarity with the type strain of Amycolatopsis cappadoca (95.7%), Amycolatopsis taiwanensis (95.