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- Title
Marinilactibacillus kalidii sp. nov., an Indole Acetic Acid-Producing Endophyte Isolated from a Shoot of Halophyte Kalidium cuspidatum.
- Authors
Huang, Xiao-Xian; Xu, Lian; Shang, Jia; Sun, Ji-Quan
- Abstract
A Gram-stain-positive, facultatively anaerobic, non-sporulating, motile with single polar flagellum, rod-shaped, indole-3-acetic acid (IAA)-producing bacterium, named M4U5P12T, was isolated from a shoot of Kalidium cuspidatum, Inner Mongolia, China. Strain M4U5P12T grew at pH 6.0–11.0 (optimum 7.5), 4–40 °C (optimum 25 °C), and in the presence of 0–15% (w/v) NaCl (optimum 4%). Positive for catalase, urease, methyl red (M.R.) reaction, and hydrolysis of starch; and negative for oxidase, Voges–Proskauer (V–P) test, and hydrolysis of cellulose. The phylogenetic trees based on the 16S rRNA gene sequences and the whole genome sequences both revealed that it clustered with Marinilactibacillus piezotolerans JCM 12337T (99.3%) and Marinilactibacillus psychrotolerans M13-2T (99.1%). The dDDH and ANIb values of strain M4U5P12T to M. piezotolerans DSM 16108T and M. psychrotolerans M13-2T were 19.3 and 18.9%, and 74.3 and 74.0%, respectively. The polar lipids were diphosphatidylglycerol, phosphatidylglycerol, phosphatidylethanolamine, an unidentified phospholipid, and two unidentified lipids. The major fatty acids were C16:0, C18:1ω9c, C16:1ω9c, and C15:1ω5c. The genomic DNA G + C content was 37.3%. On the basis of physiological, phenotypic, and phylogenetic characteristics, strain M4U5P12T should be classified as a novel species. Therefore, Marinilactibacillus kalidii sp. nov. is proposed, and the type strain is M4U5P12T (= CGMCC 1.17696T = KCTC 43247T).
- Publication
Current Microbiology, 2022, Vol 79, Issue 7, p1
- ISSN
0343-8651
- Publication type
Article
- DOI
10.1007/s00284-022-02894-6