sp. nov., isolated from garden soil.

Int J Syst Evol Microbiol

Department of Food Science and Biotechnology, Gachon University, Seongnam, 461-701, Republic of Korea.

Published: June 2024

A novel bacterial strain, designated as MAH-18, was isolated from soil sampled in a flower garden. Cells of strain MAH-18 were Gram-stain-positive, aerobic, motile, and rod-shaped. The colonies were beige in colour, smooth, and spherical when grown on Reasoner's 2A agar medium. Strain MAH-18 grew at 20-40 °C, pH 6.0-8.0, and 0-1.0 % NaCl. Cells were able to hydrolyse aesculin, gelatin, and Tween 20. According to the 16S rRNA gene sequence comparisons, the isolate was determined to be a member of the genus and most closely related to OS4 (97.9 %), DS-30 (97.9 %), GW-9 (97.6 %), mbc-2 (97.5 %), HWE 2-02 (97.4 %), and GBK3QG-3 (96.3 %). Strain MAH-18 has a draft genome size of 4 788 325 bp (eight contigs), 4572 protein-coding genes, 46 tRNA, and three rRNA genes. The average nucleotide identity and digital DNA-DNA hybridization values between strain MAH-18 and the closest type strains were 81.5-83.4 % and 24.4-25.8 %, respectively. genome mining revealed several biosynthetic gene clusters in the genome of the novel strain MAH-18. The G+C content of the genomic DNA of strain was 72.2 mol% and the predominant isoprenoid quinone was MK-8 (H). The main polar lipids were phosphatidylglycerol, diphosphatidylglycerol, phosphatidylethanolamine, and unknown phospholipids. The major cellular fatty acids were determined to be C iso and C 6. The DNA-DNA hybridization results and phenotypic, genotypic, and chemotaxonomic data demonstrated that strain MAH-18 represents a novel species, for which the name sp. nov. is proposed, with MAH-18 as the type strain (=KACC 19744=CGMCC 1.13656).

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Source
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC11261691PMC
http://dx.doi.org/10.1099/ijsem.0.006407DOI Listing

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