1887

Abstract

A novel endophytic bacterium, strain ZYY112, isolated from rice roots, was characterized by a polyphasic approach. In phylogenetic analyses based on 16S rRNA gene sequences, ZYY112 showed highest sequence similarity to HU1-AH51 (97.2 %) and less than 97 % similarity with respect to other species with validly published names. The DNA G+C content of strain ZYY112 was 60.8 mol%. The level of DNA–DNA relatedness between strain ZYY112 and DSM 27057 was 33.7 % (reciprocal 5.2 %), which supported the suggestion that ZYY112 represented a novel species of the genus . Ubiquinone Q-10 was the unique respiratory quinone (100 %). The polar lipid profile contained diphosphatidylglycerol, phosphatidylethanolamine, phosphatidylglycerol, sphingoglycolipid, an unknown aminolipid and an unknown phospholipid. The major fatty acids of strain ZYY112 were summed feature 8 (consisting of Cω7 and/or Cω6c), summed feature 3 (consisting of Cω7 and/or Cω6), C 2-OH and C. The major polyamine of ZYY112 was spermidine, which is a characteristic trait of the genus Characterization by genotypic, chemotaxonomic and phenotypic analysis indicated that strain ZYY112 represents a novel species of the genus , for which the name sp. nov. is proposed. The type strain is ZYY112 ( = ACCC 06131 = JCM 30537).

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2016-01-01
2020-01-27
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