1. Peteryoungia algae sp. nov. isolated from seaweeds of Gouqi Island, China, and its unique genetic features among Peteryoungia strains.
- Author
-
Yin, Jun, He, Min, Liu, Xiao-Xiao, Ren, Chang-Bin, Liu, Hou-Hong, Luo, Hai, Chen, Gen, Wang, Ze-Fei, Debnath, Sanjit Chandra, Wang, Pin-Mei, Chen, Hai-Xin, and Zheng, Dao-Qiong
- Abstract
A Gram-stain-negative, light khaki, strictly aerobic, rod-shaped, motile via multiple flagella, and catalase- and oxidase-positive bacterium, designated as SSM4.3
T , was isolated from the seaweed of Gouqi Island in the East China Sea. The novel isolate grows at 0–5.0% NaCl concentrations (w/v) (optimum 1%), pH 5.0–9.0 (optimum pH 7.0), and 15–37 °C (optimum 30 °C). The 16S rRNA gene sequences-based phylogeny indicates that the novel marine isolate belongs to the family Rhizobiaceae and that it shared the greatest sequence similarity (98.9%) with Peteryoungia rhizophila CGMCC 1.15691T . This classification was also supported by phylogenetic analysis using core genes. The predominant fatty acids (≥ 10%) of the strain were identified as C18:1 ω7c/C18:1 ω6c. Q-10 was identified as the major isoprenoid quinone, with trace levels of Q-9 present. The major polar lipids were identified as diphosphatidylglycerol, phosphatidylethanolamine and phosphatidylglycerol. The complete genome size of strain SSM4.3T is 4.39 Mb with a DNA G+C content of 61.3%. The average nucleotide identity, digital DNA-DNA hybridization, and average amino acid identity values between the genomes of strain SSM4.3T and its closely related representatives were 74.80–86.93%, 20.00–32.30%, and 70.30–91.52%, respectively. Phylogenetic analysis, grounded on the core genes, reveals the evolutionary relationship between SSM4.3T and other Peteryoungia strains. Pan-genomics analysis of 8 previously classified Peteryoungia species and SSM4.3T revealed their unique genetic features and functions. Overall, strain SSM4.3T was considered to be a new species of the Peteryoungia genus; the name Peteryoungia algae sp. nov. has been proposed, with type strain SSM4.3T (= LMG 32561 = MCCC 1K07170). [ABSTRACT FROM AUTHOR]- Published
- 2024
- Full Text
- View/download PDF