Qipengyuania pacifica sp. nov., a Novel Carotenoid-Producing Marine Bacterium of the Family Erythrobacteraceae, Isolated from Sponge (Demospongiae), and Antimicrobial Potential of Its Crude Extract

• Published in: Diversity (Basel) 2022-04, Vol.14 (4), p.295
• Main Authors: Tareen, Sanaullah, Risdian, Chandra, Müsken, Mathias, Wink, Joachim
• Format: Article
• Language: English
• Subjects: Acid resistance; Alkaline phosphatase; Ampicillin; Antibiotics; Antiinfectives and antibacterials; Aspartate-semialdehyde dehydrogenase; Bacitracin; Biosynthesis; Carbon; carotenoid; Catalase; Cephalosporins; Chimneys; Coenzyme Q10; Demospongiae; Erythrobacteraceae; Fatty acids; Flagella; Galactosidase; Genes; Genomes; Glycolipids; Hygromycin; Lecithin; Leucine; Lipids; Marine environment; Morphology; New species; Oxytetracycline; Pacific Ocean; Phosphatidylcholine; Phosphatidylglycerol; Phylogenetics; Phylogeny; Physiology; polyphasic analysis; Quinones; rRNA 16S; Scanning electron microscopy; Seawater; Sediments; Spectinomycin; sponge; Taxonomy; Trehalose; Trimethoprim; Trypsin
• ISSN: 1424-2818; 1424-2818
• DOI: 10.3390/d14040295

A marine Alphaproteobacterium designated as strain NZ-96T was isolated in February 2021, from a sponge species (Demospongiae) collected in muddy sediments with boulders and old chimneys in Otago/Canterbury Slope, Pacific Ocean, New Zealand. The isolate was found to be Gram-negative, rod-shaped, aerobic, motile, and produced yellow-colored colonies. The isolate was positive for alkaline phosphatase, leucine arylamidase, trypsin, catalase, and oxidase and negative for α-galactosidase and urease. It was resistant to many antibiotics including hygromycin, trimethoprim, spectinomycin, ampicillin, oxytetracycline, cephalosporin, bacitracin, and polymyxin. The 16S rRNA gene-based phylogenetic analyses exhibited that strain NZ-96T belonged to the genus Qipengyuania and showed 98.3–98.8% 16S rRNA gene sequence similarity to its closest relatives. The major respiratory quinone was ubiquinone-10 (Q-10). The polar lipid profile consisted of phosphatidylcholine, sphingoglycolipid, phosphatidylglycerol, one unknown polar lipid, and three unknown glycolipids. The major fatty acids were C18:1ω12t, C16:0, C16:1ω7c, C17:1ω6c, C16:02-OH, and C14:0 2-OH. Carotenoid were produced. The crude extract showed pronounced activity against Staphylococcus aureus Newman and Bacillus subtilis DSM 10. Pairwise ANI and dDDH values of strain NZ-96T and closely related phylogenetic hits were below the threshold values of 95% and 70%, respectively. Genes for trehalose biosynthesis, aspartate-semialdehyde dehydrogenase, flagellar biosynthesis, fatty acid biosynthesis, and antibiotics resistance were present, which aids in isolate survival in a sea or ocean environment. The DNA G+C content was 60.8% (by genome). Based on data obtained by the polyphasic approach, strain NZ-96T (= DSM 112811T = NCCB 100842T) represents a novel species of the genus Qipengyuania, for which the name Qipengyuania pacifica sp. nov. is proposed.