Abstract
Three yellow-colored strains, NC2-4-308T, NC3-4-326 and NA3-4-109, were isolated from the rhizosphere soil of Larix gmelinii in Nanwenghe Nature Reserve, Great Khingan, China. These strains were oxidase- and catalase-positive and Gram-staining-negative. The cells were non-motile short rods that were aerobic and non-spore-forming. Growth occurred at pH values of 5.0–8.0 and at 0–4% (w/v) NaCl. The three strains were resistant to low temperature and grew at 2–35 °C. The principal fatty acids (> 5%) were summed feature 9, iso-C15:0, iso-C17:0 and anteiso-C15:0. The predominant quinone was ubiquinone-8. The polar lipids consisted of phosphatidylethanolamine, phosphatidylglycerol, diphosphatidylglycerol, phosphatidylcholine, two unidentified phospholipids, three unidentified lipids and three unidentified aminophospholipids. The DNA G + C content of the type species was 64.0 mol%. The 16S rRNA gene sequence similarities among the three strains are more than 99.9%, indicating they belong to the same species. Phylogenetic analysis of the 16S rRNA gene, whole-genome sequences, the low ANI (74.2–75.5%) and dDDH (19.3–20.1%) hybridization values enabled differentiation of strains NC2-4-308T, NC3-4-326 and NA3-4-109 from the members of related genera. The combined data from the morphological, physiological, biochemical and chemotaxonomic tests indicate the three strains as a novel genus and a novel species in the family Rhodanobacteraceae. Therefore, we propose a novel genus with the name Pinirhizobacter soli gen. nov., sp. nov., for which the type strain is NC2-4-308T (= CFCC 14693T = KCTC 72394T).
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This work was funded by the National Infrastructure of Microbial Resources (NIMR-2020-7) and the National Natural Science Foundation of China (Grant NO. 31570603).
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Xue, H., Piao, Cg., Lin, Yh. et al. Pinirhizobacter soli gen. nov., sp. nov., a novel low temperature resistant gammaproteobacterium in the family Rhodanobacteraceae isolated from rhizospheric soil of Larix gmelinii. Arch Microbiol 204, 283 (2022). https://doi.org/10.1007/s00203-022-02867-0
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DOI: https://doi.org/10.1007/s00203-022-02867-0