Loading...
Gordonia aquimaris sp. nov., a novel marine actinobacterium isolated from seawater in the upper gulf of Thailand
Author(s)
Pansomsuay, Rawirat
Pittayakhajonwut, Pattama
Intaraudom, Chakapong
Suriyachadkun, Chanwit
He, Ya Wen
Tanasupawat, Somboon
Date Issued
March 1, 2023
Type
Article
Abstract
An actinobacterium strain, SW21T, was isolated from seawater collected in the upper Gulf of Thailand. Cells were Gram-stain-positive, aerobic and rod-shaped. Growth was observed from 15 to 37 °C and at pH 6–8. Maximum NaCl for growth was 14% (w/v). meso-Diaminopimelic acid, arabinose, galactose, glucose, rhamnose and ribose were detected in the whole-cell hydro-lysate. Diphosphatidylglycerol, phosphatidylethanolamine, phosphatidylinositol and phosphatidylinositol mannoside were detected as the phospholipids in the cells. The major menaquinones were MK-9(H2 ) and MK-7(H2 ). The major cellular fatty acids were C16:0, C18:1 ω9c, C18:0 and C18:0 10-methyl (TBSA). The 16S rRNA gene sequence data supported the assignment of strain SW21T to the genus Gordonia and showed that Gordonia mangrovi KCTC 49383T (98.7%) was the closest relative. Moreover, the average nucleotide identity-blast (85.5%) and digital DNA–DNA hybridization (30.7%) values between strain SW21T and its closest neighbour were below the threshold values for delineation of a novel species. The combination of genotypic and phenotypic data indicated that strain SW21T is representative of novel species of the genus Gordonia. The name Gordonia aquimaris sp. nov. is proposed for strain SW21T. The type strain is SW21T (=TBRC 15691T=NBRC 115558T).
Citation
International Journal of Systematic and Evolutionary Microbiology, 73(3), 2023