Abstract
Rubellimicrobium mesophilum Dastager et al. 2008 is a mesophilic and light reddish-pigmented representative of the Roseobacter group within the alphaproteobacterial family Rhodobacteraceae. Representatives of the Roseobacter group play an important role in the marine biogeochemical cycles and were found in a broad variety of marine environments associated with algal blooms, different kinds of sediments, and surfaces of invertebrates and vertebrates. Roseobacters were shown to be widely distributed, especially within the total bacterial community found in coastal waters, as well as in mixed water layers of the open ocean. Here we describe the features of R. mesophilum strain MSL-20T together with its genome sequence and annotation generated from a culture of DSM 19309T. The 4,927,676 bp genome sequence consists of one chromosome and probably one extrachromosomal element. It contains 5,082 protein-coding genes and 56 RNA genes. As previously reported, the G+C content is significantly different from the actual genome sequence-based G+C content and as the type strain tests positively for oxidase, the species description is emended accordingly. The genome was sequenced as part of the activities of the Transregional Collaborative Research Centre 51 (TRR51) funded by the German Research Foundation (DFG).
Highlights
Strain MSL-20T (= DSM 19309T = KCTC 22012T) is the type strain of the species Rubellimicrobium mesophilum [1], one of four species with validly published names in the genus Rubellimicrobium [2,3]; the other three species in the genus are R. thermophilum [3], R. aerolatum [4] and R. roseum [5]
The genomic 16S rRNA gene sequence of R. mesophilum DSM 19309T was compared with the Greengenes database for determining the weighted relative frequencies of taxa and keywords as previously described [7]
The major respiratory lipoquinone is ubiquinone Q-10, which is a common feature of alphaproteobacterial representatives
Summary
Strain MSL-20T (= DSM 19309T = KCTC 22012T) is the type strain of the species Rubellimicrobium mesophilum [1], one of four species with validly published names in the genus Rubellimicrobium [2,3]; the other three species in the genus are R. thermophilum [3], R. aerolatum [4] and R. roseum [5]. Strain MSL-20T was isolated from soil located at Bigeum Island, Republic of Korea [1], whereas the other type strains within the genus Rubellimicrobium were isolated from a paper mill (R. thermophilum [3]), air (R. aerolatum [4]) and forest soil (R. roseum [5]), which indicates rather diverse habitats for Rubellimicrobium. Current PubMed records do not indicate any followup research with strain MSL-20T since the initial description of R. mesophilum [1]. We present a summary classification and a set of features for R. mesophilum MSL-20T, together with the description of the complete genomic sequencing and annotation
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