Caldimonas mangrovi sp. nov., Isolated from Mangrove Soil

A rod-shaped, facultatively aerobic bacterium, designated strain S2-27(T), was isolated from a mangrove soil sample, and a polyphasic approach was employed to determine its taxonomic position. Phylogenetic analysis of the 16S rRNA gene sequence indicated the closest relationship between strain S2-27(T) and Caldimonas brevitalea ATCC 53080(T), which was further supported by phylogenetic analysis based on the core genes of genomic sequences. Digital DNA-DNA hybridization (dDDH) and the average nucleotide identity analyses (ANI) further supported the identification of strain S2-27(T) as a novel species of the genus Caldimonas. Q-8 was detected as its only ubiquinone. The major fatty acids were C-16:0 and C-16:1 & omega;7c/C-16:1 & omega;6c. Polar lipids were composed of diphosphatidylglycerol, phosphatidylglycerol, phosphatidylethanolamine, glycolipid, and several uncharacterized polar lipids and phospholipids. Biosynthetic gene cluster and pan-genome analyses strongly indicated that Caldimonas members held a great potential, displaying diverse biological functions and metabolic activities. Here, we propose a novel species of the genus Caldimonas, Caldimonas mangrovi sp. nov. with the type strain S2-27(T) (=CGMCC 4.7715(T) = JCM 34532(T)).