title: Genome of the R-body producing marine alphaproteobacterium Labrenzia alexandrii type strain (DFL-11(T)).
abstract: Labrenzia alexandrii Biebl et al. 2007 is a marine member of the family Rhodobacteraceae in the order Rhodobacterales, which has thus far only partially been characterized at the genome level. The bacterium is of interest because it lives in close association with the toxic dinoflagellate Alexandrium lusitanicum. Ultrastructural analysis reveals R-bodies within the bacterial cells, which are primarily known from obligate endosymbionts that trigger "killing traits" in ciliates (Paramecium spp.). Genomic traits of L. alexandrii DFL-11(T) are in accordance with these findings, as they include the reb genes putatively involved in R-body synthesis. Analysis of the two extrachromosomal elements suggests a role in heavy-metal resistance and exopolysaccharide formation, respectively. The 5,461,856 bp long genome with its 5,071 protein-coding and 73 RNA genes consists of one chromosome and two plasmids, and has been sequenced in the context of the Marine Microbial Initiative.
authors.affiliation: Leibniz Institute DSMZ - German Collection of Microorganisms and Cell Cultures, Braunschweig, Germany.
authors.forename: Anne
authors.initials: A
authors.lastname: Fiebig
authors.forename: Silke
authors.initials: S
authors.lastname: Pradella
authors.forename: Jörn
authors.initials: J
authors.lastname: Petersen
authors.forename: Orsola
authors.initials: O
authors.lastname: Päuker
authors.forename: Victoria
authors.initials: V
authors.lastname: Michael
authors.forename: Heinrich
authors.initials: H
authors.lastname: Lünsdorf
authors.forename: Markus
authors.initials: M
authors.lastname: Göker
authors.forename: Hans-Peter
authors.initials: HP
authors.lastname: Klenk
authors.forename: Irene
authors.initials: I
authors.lastname: Wagner-Döbler
keywords: Alexandrium lusitanicum; Alphaproteobacteria; aerobe; dinoflagellates; high-quality draft; motile; photoheterotroph; symbiosis
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