Genome sequence of the exopolysaccharide-producing Salipiger mucosus type strain (DSM 16094(T)), a moderately halophilic member of the Roseobacter clade.

Thomas Riedel,Anne Fiebig,Jörn Petersen,Nikos C. Kyrpides,Markus Göker,Hans-Peter Klenk,Stefan Spring

doi:10.4056/sigs.4909790

Abstract

Salipiger mucosus Martínez-Cànovas et al. 2004 is the type species of the genus Salipiger, a moderately halophilic and exopolysaccharide-producing representative of the Roseobacter lineage within the alphaproteobacterial family Rhodobacteraceae. Members of this family were shown to be the most abundant bacteria especially in coastal and polar waters, but were also found in microbial mats and sediments. Here we describe the features of the S. mucosus strain DSM 16094T together with its genome sequence and annotation. The 5,689,389-bp genome sequence consists of one chromosome and several extrachromosomal elements. It contains 5,650 protein-coding genes and 95 RNA genes. The genome of S. mucosus DSM 16094T was sequenced as part of the activities of the Transregional Collaborative Research Center 51 (TRR51) funded by the German Research Foundation (DFG).

Highlights

The Roseobacter clade is a very heterogeneous group of marine Alphaproteobacteria that plays an important role in the global carbon cycle and other biogeochemical processes [1]
Members of this group form an allegedly monophyletic, physiologically heterogeneous, as well as metabolically versatile group of bacterioplankton [1]. They are known to live in the open ocean, especially in coastal areas, where they have been found many times in symbiosis with algae, in microbial mats, sediments, or associated with invertebrates, but representatives of this lineage were isolated from marine environments like polar waters or sea ice [1,2,3,4], which is presented and reflected by their genome sequences [2]
Some representatives of the Roseobacter lineage such as Salipiger mucosus A3T are known to be moderate halophiles, which are adapted to a wide range of salinities and were found to produce special compounds like compatible solutes, halophilic enzymes or exopolysaccharides [7,8,9]

Summary

Introduction

The Roseobacter clade is a very heterogeneous group of marine Alphaproteobacteria that plays an important role in the global carbon cycle and other biogeochemical processes [1]. Evidence codes - TAS: Traceable Author Statement (i.e., a direct report exists in the literature); NAS: Nontraceable Author Statement (i.e., not directly observed for the living, isolated sample, but based on a generally accepted property for the species, or anecdotal evidence).

Results

Conclusion