Abstract:
:A Gram-stain-positive, non-motile actinomycete, designated strain YIM 48875(T), was isolated from rhizosphere soil of Bletilla striata and its taxonomic position was established by using a polyphasic approach. Phylogenetic analysis based on 16S rRNA gene sequence data showed that strain YIM 48875(T) belonged to the genus Planosporangium, supported by a bootstrap value of 100 %. Cells of strain YIM 48875(T) showed two kinds of sporangia, which also supported its classification in the genus Planosporangium. Strain YIM 48875(T) grew optimally at 28 °C, at pH 6.0-8.0 and in the presence of 2 % (w/v) NaCl. The level of 16S rRNA gene sequence similarity between strain YIM 48875(T) and Planosporangium flavigriseum YIM 46034(T) was 98.6 %. Strain YIM 48875(T) exhibited a quinone system with menaquinones MK-9(H(4)), MK-9(H(6)) and MK-9(H(8)) as the predominant compounds, a polar lipid profile comprising diphosphatidylglycerol, phosphatidylethanolamine and phosphatidylinositol mannoside and the major fatty acids iso-C(15 : 0) and iso-C(16 : 0); these data were markedly different from those for P. flavigriseum YIM 46034(T). The level of DNA-DNA relatedness between strain YIM 48875(T) and P. flavigriseum YIM 46034(T) was 45.5 %. It is apparent from the genotypic and phenotypic data that strain YIM 48875(T) represents a novel species of the genus Planosporangium, for which the name Planosporangium mesophilum sp. nov. is proposed. The type strain is YIM 48875(T) ( = CCTCC AA 209049(T) = KCTC 19779(T)).
journal_name
Int J Syst Evol Microbiolauthors
Cao YR,Wang Q,Jin RX,Jiang Y,Lai HX,He WX,Xu LH,Jiang CLdoi
10.1099/ijs.0.026096-0subject
Has Abstractpub_date
2011-06-01 00:00:00pages
1330-1333issue
Pt 6eissn
1466-5026issn
1466-5034journal_volume
61pub_type
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