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  • Title: Aeromicrobium terrae sp. nov., isolated from a maize field.
    Author: Lin SY, Tsai CF, Hameed A, Young CC.
    Journal: Int J Syst Evol Microbiol; 2021 Feb; 71(2):. PubMed ID: 33400640.
    Abstract:
    A polyphasic taxonomic approach was used to characterize a Gram-stain-positive bacterium, designated strain CC-CFT486T, isolated from soil sampled in a maize field in Taiwan. Cells of strain CC-CFT486T were short rods, motile with polar flagella, catalase-positive and oxidase-positive. Optimal growth occurred at 30 °С, pH 8 and 1 % NaCl. Phylogenetic analyses based on 16S rRNA genes revealed a distinct taxonomic position attained by strain CC-CFT486T associated with Aeromicrobium panacisoli (97.0 % sequence identity), Aeromicrobium lacus (97.0 %), Aeromicrobium erythreum (96.8 %) and Aeromicrobium alkaliterrae (96.8 %), and lower sequence similarity values to other species. Average nucleotide identity (ANI) values were 70.6-77.8 % (n=11) compared within the type strains of the genus Aeromicrobium. Strain CC-CFT486T contained C16 : 0, C17 : 0, C17 : 1  ω8c and C18 : 1  ω9c as the predominant fatty acids. The polar lipid profile consisted of diphosphatidylglycerol, phosphatidylethanolamine, phosphatidylglycerol, phosphatidylinositol, two unidentified aminophospholipids and three unknown phospholipids. The cell wall peptidoglycan of strains CC-CFT486T contained ll-diaminopimelic acid (ll-DAP) and the major polyamine was spermidine. The DNA G+C content was 70.6 mol% and the predominant quinone was menaquinone 9 (MK-9). Based on its distinct phylogenetic, phenotypic and chemotaxonomic traits together with results of comparative 16S rRNA gene sequence and ANI analyses, strain CC-CFT486T is proposed to represent a novel Aeromicrobium species, for which the name Aeromicrobium terrae sp. nov. (type strain CC-CFT486T=BCRC 81217T=JCM 33499T).
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