Marinobacter aromaticivorans sp. nov., a polycyclic aromatic hydrocarbon-degrading bacterium isolated from sea sediment

Abstract

A rod-shaped, Gram-stain-negative, slightly halotolerant bacterium, designated strain D15-8PT ,was isolated from a sediment sample from the South China Sea. The strain could grow in NaCl concentrations ranging from 0.5 % to 10 % (w/v) (optimum 0.5-1.5 %), and could be cultivated at 10-40 8C (optimum 25 8C) and pH 5.5-9.5 (optimum pH 7.0-8.0). The strain was positive for catalase, oxidase, and hydrolysis of Tween 80, but negative for hydrolysis of DNA and gelatin, nitrite reduction, indole production, Voges-Proskauer reaction, and methyl red test. Strain D15-8P T could biodegrade naphthalene, phenanthrene, and anthracene. The major respiratory quinone was Q-9.The main cellular fatty acids were C 12 : 0 (11.5 %), C 14 : 0 3-methyl (22.0 %), C 16 : 0 (19.2 %), C 16 : 1 v9c (22.9 %), and C 18 : 1 v9c (6.7 %). The polar lipids were phosphatidylethanolamine, phosphatidylglycerol, diphosphatidylglycerol, an unidentified aminophospholipid and an unidentified phospholipid. The DNA G+C content was 56.8 mol%. Phylogenetic analyses based on 16S rRNA genes showed that strain D15-8P of the gyrB gene analysis and DNA-DNA hybridization were both less than the cut-off values (90 % for gyrB gene sequence similarity and 70 % for DNA-DNA hybridization). On the basis of this taxonomic study using a polyphasic approach, strain D15-8P

Marinobacter lipolyticusfrom Red Sea for lipase production and modulation of silver nanomaterials for anti‐candidal activities

“…In previous reports, halophilc and lipolytic bacterium Marinobacter sp. was isolated from different geographical locations like Sudan underground mine [48], coastal surface sea water of Visakhapatnam, India [49], salt lake of Xiaochaidan, China [50] and Sea sediments of South China [51].…”

Marinobacter denitrificans sp. nov., isolated from marine sediment of southern Scott Coast, Antarctica

“…halotolerans CP12 T [41, 42]. The sole respiratory quinone of strain JB02H27 T was ubiquinone-9 (Q-9, 100 % determined by HPLC), consistent with the other members of the genus Marinobacter [41–43].…”

Marinobacter halodurans sp. nov., a halophilic bacterium isolated from sediment of a salt flat

“…At the time of writing, the genus Marinobacter comprises 47 species with validly published names (http://www.bacterio.net/marinobacter.html) that have been isolated from marine environments (e.g. sea water [1, 3], tidal flats [4, 5] and sediments [6, 7]) and saline environments (e.g. a salt pond [8], solar salterns [9, 10], and a salt lake [11]).…”

“…html) that have been isolated from marine environments (e.g. sea water [1,3], tidal flats [4,5] and sediments [6,7]) and saline environments (e.g. a salt pond [8], solar salterns [9,10], and a salt lake [11]).…”