Rhodobacter sediminicola sp. nov., isolated from a fresh water pond.

Rhodobacter sediminicola sp. nov., isolated from a fresh water pond. Int J Syst Evol Microbiol. 2019 Dec 05;: Authors: G S, Kumar D, A K, Ch S, Ch V R Abstract A phototrophic bacterium, designated as strain JA983T, was isolated from a freshwater pond in Gujarat, India. The strain was yellowish brown, catalase- and oxidase-positive, rod-to-oval shaped, Gram-stain-negative and motile. Growth was observed at 20-35 °C. NaCl was not required for optimum growth and up to 5 % was tolerated. Growth was observed at pH 6.0-8.0, with an optimum at pH 7.0. An unidentified glycolipid, phosphatidylcholine, phosphatidylethanolamine, phosphatidylglycerol, diphosphatidylglycerol, two unidentified aminolipids (AL1, AL2) and two unidentified lipids (L1 and L2) are the polar lipids of JA983T. Q10 is the only quinone. C18 : 1 ω7c/C18  : 1 ω6c is the major fatty acid. JA983T showed highest 16S rRNA gene sequence similarity with the type strains of Rhodobacter sphaeroides (98.99%), Rhodobacter megalophilus (98.99 %), Rhodobacter johrii (98.99 %) and other members of the genus Rhodobacter with less than 98.7 % similarity. In a 16S rRNA gene sequence-based phylogenetic tree, JA983T formed a different sub-clade with its nearest phylogenetic members of genus Rhodobacter. Phenotypic, chemotaxonomic, phylogenetic and genomic [average nucleotide identity (ANI) and digital DNA-DNA hybridization (dDDH) differences indicated that JA983T is s...
Source: International Journal of Systematic and Evolutionary Microbiology - Category: Microbiology Authors: Tags: Int J Syst Evol Microbiol Source Type: research