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  • Title: Acidimangrovimonas sediminis gen. nov., sp. nov., isolated from mangrove sediment and reclassification of Defluviimonas indica as Acidimangrovimonas indica comb. nov. and Defluviimonas pyrenivorans as Acidimangrovimonas pyrenivorans comb. nov.
    Author: Ren H, Ma H, Li H, Huang L, Luo Y.
    Journal: Int J Syst Evol Microbiol; 2019 Aug; 69(8):2445-2451. PubMed ID: 31169491.
    Abstract:
    A Gram-stain-negative, aerobic, non-motile, short-rod bacterium, strain MS2-2T, was isolated from mangrove sediment sampled at Jiulong River Estuary, Fujian province, PR China. 16S rRNA gene sequence similarity analysis showed that strain MS2-2T was most closely related to Defluviimonas indica 20V17T (97.41 %) and Defluviimonas pyrenivorans PrR001T (96.18 %). Phylogenetic trees based on 16S rRNA genes and genome sequences both revealed that strain MS2-2T formed a distinct cluster with D. indica 20V17T and D. pyrenivorans PrR001T within family Rhodobacteracea, quite separate from other type species in the genus Defluviimonas. The average nucleotide identity value between strain MS2-2T and D. indica 20V17T was 78.35 %. Growth of strain MS2-2T was observed at 16-41 ° C (optimum, 34 ° C), pH 3.6-7.5 (pH 6.0) and 0.5-10.0 % (w/v) NaCl (4.0 %). The major cellular fatty acids were summed feature 8 (C18 : 1ω7c and/or C18 : 1ω6c), C16 : 0 and C18 : 0. Ubiquinone 10 was the sole quinone. The major polar lipids were diphosphatidylglycerol, phosphatidylglycerol and phosphatidylethanolamine. The DNA G+C content was 67.9 mol%. The combined genotypic and phenotypic data show that strain MS2-2T represents a novel species of a novel genus in the family Rhodobacteraceae, for which the name Acidimangrovimonassediminis gen. nov., sp. nov. is proposed, with the type strain MS2-2T (=MCCC 1K02682T=NBRC 112978T). We also propose the reclassification of Defluviimonas indica as Acidimangrovimonas indica comb. nov. and Defluviimonas pyrenivorans as Acidimangrovimonas pyrenivorans comb. nov.
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