数字农科院2.0

Nitrincola salilacus sp. nov., isolated from Niya Fish Salt Lake Sediment in Xinjiang, Northwest China

文献类型： 外文期刊

作者： Qingyu Wang;Yi Xiao;Danning Gao;Longyi Su;Yongliang Yan;Yuhua Zhan;Zhengfu Zhou柯秀彬

作者机构：

关键词： chemotaxonomic characterization;comparative genomics;genomic analysis;Nitrincola;salt lake

期刊名称： International Journal of Systematic and Evolutionary Microbiology

ISSN： 1466-5026

年卷期： 2025 年 75 卷 8 期

页码：

收录情况： SCIE（2025版）

摘要： A Gram-stain-negative, aerobic, rod-shaped, oxidase-and catalase-positive and non-motile bacterium, named MINF-07-Sa-05T, was isolated from sediment samples collected from Niya Fish Salt Lake in Xinjiang, northwest China. Phylogenetic tree based on 16S rRNA gene sequences showed that strain MINF-07-Sa-05T consistently fell within the genus Nitrincola and formed a clade together with Nitrincola alkalilacustris ZV-19T (98.97%) and Nitrincola lacisaponensis 4CAT (96.16%). Genomic average nucleotide identity values for strain MINF-07-Sa-05T with the type strains within the genus Nitrincola ranged from 69.8 to 87.8%, while the in silico DNA–DNA hybridization values for strain MINF-07-Sa-05T with these strains ranged from 20.4 to 33.7%. The genome sequence size of the strain was 4.81 Mb, with a DNA G+C content of 52.6 mol%. Its growth occurred at 4–40 °C, at pH 6.0–10.0, and tolerated up to 9% (w/v) NaCl. The major fatty acids contained summed feature 8 (C18:1 ω7c/C18:1 ω6c; 59.8%), summed feature 3 (C16:1 ω7c/C16:1 ω6c; 20.4%) and C16:0 (13.8%). The primary respiratory quinone was ubiquinone-8. The main polar lipids were phosphatidylglycerol and phosphatidylethanolamine. Genomic analyses showed a high abundance of genes involved in the nitrogen, sulphur cycle and antibiotic resistance. According to the genotypic, phylogenetic and chemotaxonomic data, strain MINF-07-Sa-05T represents a novel species within the genus Nitrincola, for which the name Nitrincola salilacus sp. nov. is proposed. The type strain is MINF-07-Sa-05T (=GDMCC 1.4420T=JCM 37233T).

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