Streptosporangiumsubfuscum sp. nov., isolated from the rhizosphere of marigold (Tagetes erecta L.)

A Gram-stain positive, filamentous bacterial strain, designated strain NEAU-TWSJ13 T , was isolated from the rhizosphere of a marigold ( Tagetes erecta L.) plant collected in Heilongjiang Province, northeast China, and characterized using a polyphasic approach. The strain was observed to form abunda...

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Bibliographic Details
Published in:Antonie van Leeuwenhoek 2014-12, Vol.106 (6), p.1231-1238
Main Authors: Zhou, Ying, Liu, Chongxi, Zhang, Yuejing, Li, Chuang, Xing, Jia, Li, Lianjie, Zhou, Shuyu, Wang, Xiangjing, Xiang, Wensheng
Format: Article
Language:English
Subjects:
Biomedical and Life Sciences
Deoxyribonucleic acid
DNA
Flowers & plants
Gram-positive bacteria
Life Sciences
Medical Microbiology
Microbiology
Original Paper
Phylogenetics
Plant Sciences
Rhizosphere
Soil Science & Conservation
Taxonomy
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Summary:A Gram-stain positive, filamentous bacterial strain, designated strain NEAU-TWSJ13 T , was isolated from the rhizosphere of a marigold ( Tagetes erecta L.) plant collected in Heilongjiang Province, northeast China, and characterized using a polyphasic approach. The strain was observed to form abundant aerial hyphae differentiated into spherical sporangia. 16S rRNA gene sequence similarity studies showed that strain NEAU-TWSJ13 T belongs to the genus Streptosporangium , being most closely related to Streptosporangium fragile DSM 43847 T (98.6 %). Phylogenetic analysis of the 16S rRNA gene sequence indicated that it formed a phyletic line with S. fragile DSM 43847 T , Streptosporangium jomthongense NBRC 110047 T (98.4 % 16S rRNA gene similarity) and Streptosporangium violaceochromogenes DSM 43849 T (97.6 % 16S rRNA gene similarity). A combination of DNA–DNA hybridization results and some phenotypic characteristics indicated that strain NEAU-TWSJ13 T can be distinguished from S. fragile DSM 43847 T and S. jomthongense NBRC 110047 T . Moreover, strain NEAU-TWSJ13 T can also be differentiated from S. violaceochromogenes DSM 43849 T and other Streptosporangium species showing high 16S rRNA gene sequence similarity (>98.0 %) by morphological and physiological characteristics. Therefore, it is proposed that strain NEAU-TWSJ13 T represents a novel species of the genus Streptosporangium , for which the name Streptosporangium subfuscum sp. nov. is proposed. The type strain is NEAU-TWSJ13 T ( = CGMCC 4.7146 T  = DSM = 46724 T ).
ISSN:0003-6072
1572-9699
DOI:10.1007/s10482-014-0293-2