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Volume 66, Issue 1

sp. nov., an endophytic actinobacterium isolated from bark of Free

Abstract

A Gram-stain-positive, aerobic, coccoid, non-motile, non-spore-forming bacterium, designated strain S3Af-1, was isolated from surface-sterilized bark of collected from Dongzhaigang National Nature Reserve in Hainan, China, and examined using a polyphasic approach to clarify its taxonomic position. This bacterium did not produce substrate mycelia or aerial hyphae, and no diffusible pigments were observed on the media tested. Strain S3Af-1 grew optimally without NaCl, at 28–30 °C and at pH 7.0.Phylogenetic analysis based on 16S rRNA gene sequences indicated that strain S3Af-1 belonged to the genus and shared highest similarity with ‘’ BS6 (97.43 %) and CC-12602 (97.08 %). DNA–DNA hybridization results indicated that the level of relatedness between strain S3Af-1 and CC-12602 was less than 70 %. The DNA G+C content of strain S3Af-1 was 67.1 mol%. The cell-wall peptidoglycan contained -2,6-diaminopimelic acid. MK-9(H) and MK-9(H) were the predominant menaquinones. Phosphatidylglycerol, diphosphatidylglycerol, an unidentified glycolipid, two unidentified phospholipids and other lipids were detected in the polar lipid extracts. The major fatty acids were iso-C, anteiso-C and anteiso-C. On the basis of phylogenetic analysis, and phenotypic and chemotaxonomic characteristics, strain S3Af-1 represents a novel species of the genus , for which the name sp. nov. is proposed. The type strain is S3Af-1 ( = DSM 100019 = CGMCC 4.7306).

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2016-01-01
2024-04-23
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Microlunatus endophyticus sp. nov., an endophytic actinobacterium isolated from bark of Bruguiera sexangula
Int J Syst Evol Microbiol 66, 481 (2016); https://doi.org/10.1099/ijsem.0.000779
/content/journal/ijsem/10.1099/ijsem.0.000779
/content/journal/ijsem/10.1099/ijsem.0.000779
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