title: Mucilaginibacter composti sp. nov., with ginsenoside converting activity, isolated from compost.
abstract: The Gram-negative, strictly aerobic, non-motile, non-spore-forming, rod shaped bacterial strain designated TR6-03(T) was isolated from compost, and its taxonomic position was investigated by using a polyphasic approach. Strain TR6-03(T) grew at 4-42°C and at pH 6.0-8.0 on R2A and nutrient agar without NaCl supplement. Strain TR6-03(T) had β-glucosidase activity, which was responsible for its ability to transform ginsenoside Re (one of the dominant active components of ginseng) to Rg(2). On the basis of 16S rRNA gene sequence similarity, strain TR6-03(T) was shown to belong to the family Sphingobacteriaceae and to be related to Mucilaginibacter lappiensis ANJLI2(T) (96.3% sequence similarity), M. dorajii FR-f4(T) (96.1%), and M. rigui WPCB133(T) (94.1%). The G+C content of the genomic DNA was 45.6%. The predominant respiratory quinone was MK-7 and the major fatty acids were summed feature 3 (comprising C(16:1) ω7c and/or iso-C(15:0) 20H), iso-C(16:0) and iso-C(17:0) 3OH. DNA and chemotaxonomic data supported the affiliation of strain TR6-03(T) to the genus Mucilaginibacter. Strain TR6-03(T) could be differentiated genotypically and phenotypically from the recognized species of the genus Mucilaginibacter. The isolate therefore represents a novel species, for which the name Mucilaginibacter composti sp. nov. is proposed, with the type strain TR6-03(T) (=KACC 14956(T) = KCTC 12642(T) =LMG 23497(T)).
authors: Department of Biological Sciences, Korea Advanced Institute of Science and Technology, Daejeon, 305-701, Republic of Korea.
authors: Chang-Hao
authors: CH
authors: Cui
authors: Tae-Eun
authors: TE
authors: Choi
authors: Hongshan
authors: H
authors: Yu
authors: Fengxie
authors: F
authors: Jin
authors: Sung-Taik
authors: ST
authors: Lee
authors: Sun-Chang
authors: SC
authors: Kim
authors: Wan-Taek
authors: WT
authors: Im
mesh_terms: D015373:Bacterial Typing Techniques; D041963:Bacteroidetes / Q000145:classification* / Q000235:genetics / Q000302:isolation & purification* / Q000502:physiology; D001482:Base Composition; D004269:DNA, Bacterial / Q000235:genetics; D004275:DNA, Ribosomal / Q000235:genetics; D020459:Genes, rRNA; D005838:Genotype; D036145:Ginsenosides / Q000378:metabolism*; D010641:Phenotype; D010802:Phylogeny; D012336:RNA, Ribosomal, 16S / Q000235:genetics; D056910:Republic of Korea; D017422:Sequence Analysis, DNA; D012987:Soil; D012988:Soil Microbiology; D013045:Species Specificity; D001617:beta-Glucosidase / Q000235:genetics / Q000378:metabolism
chemical_list: D004269:DNA, Bacterial; D004275:DNA, Ribosomal; D036145:Ginsenosides; D012336:RNA, Ribosomal, 16S; D012987:Soil; C049864:ginsenoside Re; D001617:beta-Glucosidase