Stable isotope-assisted metabolite profiling reveals new insights into L-tryptophan chemotrophic metabolism of Rubrivivax benzoatilyticus.

Anoxygenic photosynthetic bacteria (APB) are metabolically versatile, capable of surviving with an extended range of carbon and nitrogen sources. This group of phototrophic bacteria have remarkable metabolic plasticity in utilizing an array of organic compounds as carbon source/electron donors and nitrogen sources with sophisticated growth modes. Rubrivivax benzoatilyticus JA2 is one such photosynthetic bacterium utilizes L-tryptophan as nitrogen source under phototrophic growth mode and produces an array of indolic compounds of biotechnological significance.

Phylogenomic analysis of the genus : proposal for division of this genus into the emended genus and two novel genera gen. nov. and gen. nov.

The members of the genus are key players in the removal of petroleum hydrocarbons from polluted marine environments. More than half of the species were described in the last decade using 16S rRNA gene phylogeny and genomic-based metrics. However, the 16S rRNA gene identity (<94 %) between some members of the genus suggested their imprecise taxonomic status.

Revisiting the taxonomy of the genus Rhodopirellula with the proposal for reclassification of the genus to Rhodopirellula sensu stricto, Aporhodopirellula gen. nov., Allorhodopirellula gen. nov. and Neorhodopirellula gen. nov.

The current genus Rhodopirellula consists of marine bacteria which belong to the family Pirellulaceae of the phylum Planctomycetota. Members of the genus Rhodopirellula are aerobic, mesophiles and chemoheterotrophs. The here conducted analysis built on 16S rRNA gene sequence and multi-locus sequence analysis based phylogenomic trees suggested that the genus is subdivided into four clades.

Phylogenomic analysis of a metagenome-assembled genome indicates a new taxon of an anoxygenic phototroph bacterium in the family Chromatiaceae and the proposal of "Candidatus Thioaporhodococcus" gen. nov.

In this study, three metagenome-assembled genomes of a sediment sample were constructed. A Bin1 (JB001) genome was identified as a photo-litho-auto/heterotroph (purple sulfur bacteria) bacterium with the ability to fix nitrogen, tolerate salt, and to produce bacteriochlorophyll a. It has a genome length of 4.

Neoroseomonas marina sp. nov., Isolated from a Beach Sand.

A pink-pigmented bacterium (strain JC162 = KCTC 32190) was isolated from a beach sand sample. Cells were Gram-stain-negative, coccoid, non-motile, and strictly aerobic. EzBioCloud BLAST search of 16S rRNA gene sequence showed that strain KCTC 32190 had the highest sequence identity to the members of the genus Neoroseomonas and was closely related to N.

Phylotaxogenomics for the Reappraisal of the Genus With the Creation of Six New Genera.

The genus is a significant group of bacteria which is invariably of great clinical and ecological importance. Previous studies have shown that the genus is polyphyletic in nature. Our present study focused on generating a lucid understanding of the phylogenetic framework for the re-evaluation and reclassification of the genus Phylogenetic studies based on the 16S rRNA gene and 92 concatenated genes suggested that the genus is heterogeneous, forming seven major groups.

Mesobacillus aurantius sp. nov., isolated from an orange-colored pond near a solar saltern.

An endospore producing, strict aerobic, Gram-stain-positive, orange-colored colony forming bacterium designated as strain JC1013 was isolated from an orange pond near a solar saltern of Tamil Nadu, India. Phylogenetic analysis of the 16S rRNA gene sequences indicated that strain was affiliated to the family Bacillaceae of the phylum Firmicutes. Strain showed highest 16S rRNA gene sequence identity of 98.

sp. nov., an indole-producing bacterium isolated from the rhizosphere of an orchid, .

A Gram-stain-negative, non-motile, coccoid-shaped, catalase- and oxidase-positive, non-denitrifying, neutrophilic bacterium designated as strain JC501 was isolated from an epiphytic rhizosphere of an orchid, , growing in the Western Ghats of India. Phylogenetic analyses based on the 16S rRNA gene sequence indicated that strain JC501 belonged to the genus and had the highest levels of sequence identity with KKL-A5 (98.9 %), WPAn02 (97.