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- Title
Dactylosporangium solaniradicis sp. nov., a novel actinobacterium isolated from a root of tomato ( Solanum lycopersicum L.).
- Authors
Fan, Jianlong; Liu, Chongxi; Ma, Zhaoxu; Zhou, Shuyu; Li, Wenchao; Li, Jiansong; Chu, Liyang; Wang, Xiangjing; Xiang, Wensheng
- Abstract
A novel actinobacterium, designated strain NEAU-FJL2, was isolated from a tomato root ( Solanum lycopersicum L.) and characterised using a polyphasic approach. Morphological and chemotaxonomic properties of strain NEAU-FJL2 are consistent with the description of the genus Dactylosporangium. Finger-shaped sporangia were observed to form on short sporangiophores branching from the substrate hyphae. The cell wall peptidoglycan was found to contain meso- and 3-hydroxy-diaminopimelic acids; arabinose, mannose, rhamnose and xylose were found as whole-cell sugars. The phospholipid profile was found to consist of diphosphatidylglycerol, phosphatidylethanolamine, phosphatidylglycerol and phosphatidylinositol. The predominant menaquinones were identified as MK-9(H) and MK-9(H). The major fatty acids were identified as iso-C, C ω7c and iso-C. Phylogenetic analysis based on 16S rRNA gene sequences demonstrated that strain NEAU-FJL2 belongs to the genus Dactylosporangium, with Dactylosporangium sucinum JCM 19831 (99.3 % 16S rRNA gene sequence similarity), Dactylosporangium darangshiense JCM 17441 (99.2 %), Dactylosporangium fulvum JCM 5631 (98.9 %) and Dactylosporangium roseum JCM 3364 (98.8 %) as the nearest phylogenetic relatives. However, a combination of DNA-DNA hybridization results and some phenotypic characteristics demonstrated that strain NEAU-FJL2 can be distinguished from them. Consequently, it is proposed that strain NEAU-FJL2 represents a novel species of the genus Dactylosporangium, for which the name Dactylosporangium solaniradicis sp. nov. is proposed. The type strain is NEAU-FJL2 (=CGMCC 4.7302 = DSM 100814).
- Subjects
ACTINOBACTERIA; TOMATO diseases &; pests; TOMATOES; MICROBIOLOGY; PHYLOGENY; RIBOSOMAL RNA; PHOSPHATIDYLINOSITOLS; XYLOSE
- Publication
Antonie van Leeuwenhoek, 2016, Vol 109, Issue 7, p971
- ISSN
0003-6072
- Publication type
Article
- DOI
10.1007/s10482-016-0697-2