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Neorhizobium lilium sp. nov., an endophytic bacterium isolated from Lilium pumilum bulbs in Hebei province

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A novel gram-negative, aerobic, non-spore-forming, rod-shaped and non-nitrogen fixing bacterium named strain 24NRT was isolated from wild Lilium pumilum bulbs in Fuping, Baoding City, Hebei province, PR China. The 16S… Click to show full abstract

A novel gram-negative, aerobic, non-spore-forming, rod-shaped and non-nitrogen fixing bacterium named strain 24NRT was isolated from wild Lilium pumilum bulbs in Fuping, Baoding City, Hebei province, PR China. The 16S rRNA gene sequences of strains 24NRT showed the highest similarity to Neorhizobium alkalisoli DSM 21826T (98.5%) and N. galegae HAMBI 540T (98.1%). Phylogenetic analysis based on 16S rRNA genes and multilocus sequence analysis (MLSA) based on the partial sequences of atpD-glnII-glnA-recA-ropD-thrC housekeeping genes both indicated that strain 24NRT is a member of the genus Neorhizobium. The average nucleotide identity between the genome sequence of strain 24NRT and that of the isolate N. alkalisoli DSM 21826T was 83.1%, and the digital DNA–DNA hybridization was 20.1%. The G+C content of strain 24NRT was 60.3 mol %. The major cellular fatty acids were summed feature 8 (C18:1ω7c and/or C18:1ω6c) and C19:0 cyclo ω8c. Based on phenotypic, phylogenetic, and genotypic data, strain 24NRT is considered to represent a novel species of the genus Neorhizobium, for which the name Neorhizobium lilium sp. nov. is proposed. The type strain is 24NRT (= ACCC 61588T = JCM 33731T).

Keywords: strain 24nrt; neorhizobium lilium; hebei province; pumilum bulbs; lilium; lilium pumilum

Journal Title: Archives of Microbiology
Year Published: 2019

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