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A non-motile and non-endospore-forming rod, strain NBRC 16403T, was isolated from the phyllosphere of a sedge (Carex sp.). 16S rRNA gene sequence analysis indicated that strain NBRC 16403T was closely related to Herbiconiux solani DSM 19813T (98.6 % 16S rRNA gene sequence similarity), Herbiconiux ginsengi wged11T (97.8 %) and Herbiconiux moechotypicola RB-62T (97.8 %). The peptidoglycan (B2γ type) contained d- and l-2,4-diaminobutyric acids, d-alanine, glycine and threo-3-hydroxyglutamic acid, which replaced glutamic acid almost completely. The predominant menaquinones were MK-10 and MK-11. The polar lipid pattern comprised diphosphatidylglycerol, phosphatidylglycerol, three glycolipids and minor amounts of other polar lipids. The major fatty acids were anteiso-C15 : 0, iso-C16 : 0 and anteiso-C17 : 0; no cyclohexyl-C17 : 0 was detected. The DNA G+C content was 71.0 mol%. The results of phylogenetic and DNA–DNA relatedness studies, along with phenotypic differences between strain NBRC 16403T and recognized members of the genus Herbiconiux, indicated that the isolate should be assigned to a novel species of the genus Herbiconiux, for which the name Herbiconiux flava sp. nov. is proposed. The type strain is NBRC 16403T ( = VKM Ac-2058T).
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