Streptomyces yangpuensis sp. nov., isolated from soil

Abstract

A novel Gram-stain-positive strain with sandy aerial mycelium and golden yellow substrate mycelium, designated fd2-tb T , was isolated from a soil sample collected in Shanghai, China, and its taxonomic status was established by phylogenetic analysis. 16S rRNA gene sequence analysis showed that strain fd2-tb T belonged to the genus Streptomyces and was related to Streptomyces amritsarensis JCM 19660 T (99.9 % 16S rRNA gene sequence similarity), Streptomyces flavotricini NBRC 12770 T (99.9 %), Streptomyces polychromogenes NBRC 13072 T (99.8 %), Streptomyces racemochromogenes NRRL B-5430 T (99.7 %), Streptomyces globosus LMG 19896 T (99.5 %), Streptomyces toxytricini NBRC 12823 T (99.5 %) and Streptomyces katrae NBRC 13447 T (99.3 %). The cell wall of strain fd2-tb T contained LL-diaminopimelic acid, and whole-cell sugars were identified as glucose and ribose. The menaquinones MK-9(H 4 ), MK-9(H 6 ) and MK-9(H 8 ) were also detected. In addition, the polar lipids diphosphatidylglycerol, phosphatidylglycerol, phosphatidylethanolamine, as well as five unidentified phospholipids, were detected. Major cellular fatty acids were identified as anteiso-C 15 : 0 , iso-C 16 : 0 , anteiso-C 17 : 0 , iso-C 15 : 0 and C 16 : 0 . DNA-DNA hybridization experiments showed that strain fd2-tb T exhibited 36.5¡0.6 %, 43.5¡2.0 %, 11.1¡1.3 %, 10.3¡3.1 %, 9.8¡1.9 %, 48.9¡3.9 % and 16.3¡1.7 % relatedness to S. amritsarensis JCM 40119660 T , S. flavotricini NBRC 12770 T , S. polychromogenes NBRC 13072 T , S. racemochromogenes NRRL B-5430 T , S. globosus LMG 19896 T , S. toxytricini NBRC 12823 T and S. katrae NBRC 13447 T , respectively. Based on these analyses as well as some phenotypic differences, strain fd2-tb T is considered to represent a novel species of the genus Streptomyces, for which the name Streptomyces yangpuensis sp. nov. is proposed. The type strain is fd2-tb T (5DSM 100336 T 5CGMCC 4.7256 T ).

Streptomyces: Still the Biggest Producer of New Natural Secondary Metabolites, a Current Perspective

“…Streptomyces also play an important role in biogeochemical cycles due to their high ability to produce the enzyme hydrogenase, which actively participates in the hydrogen cycle [92]. In addition, Streptomyces also influence the structure of soil microbial communities [115]; they are involved in the decomposition of plant litter and the formation of organic matter in the soil [116], as well as weathering of rocks [117]. New strains of Streptomycetes have been isolated from different soil samples, including rhizospheric soil [118][119][120], free soil [121][122][123], forest soil [124][125][126], wetland soil [127], and the sediments and the soil of the savannah.…”