%0 Journal Article
%9 ACL : Articles dans des revues avec comité de lecture répertoriées par l'AERES
%A Ben Hania, W.
%A Joseph, Manon
%A Bunk, B.
%A Sproer, C.
%A Klenk, H. P.
%A Fardeau, Marie-Laure
%A Spring, S.
%T Characterization of the first cultured representative of a Bacteroidetes clade specialized on the scavenging of cyanobacteria
%D 2017
%L fdi:010069416
%G ENG
%J Environmental Microbiology
%@ 1462-2912
%M ISI:000397525100025
%N 3
%P 1134-1148
%R 10.1111/1462-2920.13639
%U https://www.documentation.ird.fr/hor/fdi:010069416
%> https://www.documentation.ird.fr/intranet/publi/2017/04/010069416.pdf
%V 19
%W Horizon (IRD)
%X The anaerobic, mesophilic and moderately halophilic strain L21-Spi-D4(T) was recently isolated from the suboxic zone of a hypersaline cyanobacterial mat using protein-rich extracts of Arthrospira (formerly Spirulina) platensis as substrate. Phylogenetic analyses based on 16S rRNA genes indicated an affiliation of the novel strain with the Bacteroidetes clade MgMjR-022, which is widely distributed and abundant in hypersaline microbial mats and heretofore comprised only sequences of uncultured bacteria. Analyses of the complete genome sequence of strain L21-Spi-D4(T) revealed a possible specialization on the degradation of cyanobacterial biomass. Besides genes for enzymes degrading specific cyanobacterial proteins a conspicuous transport complex for the polypeptide cyanophycin could be identified that is homologous to typical polysaccharide utilization loci of Bacteroidetes. A distinct and reproducible co-occurrence pattern of environmental 16S rRNA gene sequences of the MgMjR-022 clade and cyanobacteria in the suboxic zone of hypersaline mats points to a specific dependence of members of this clade on decaying cyanobacteria. Based on a comparative analysis of phenotypic, genomic and ecological characteristics we propose to establish the novel taxa Salinivirga cyanobacteriivorans gen. nov., sp. nov., represented by the type strain L21-Spi-D4(T), and Salinivirgaceae fam. nov., comprising sequences of the MgMjR-022 clade.
%$ 084