Complete genome sequence of Dyadobacter sp. 32, isolated from a culture of the freshwater diatom Cymbella microcephala.
Bacteria have been shown to be involved in different species-specific interactions with eukaryotic algae such as diatoms, impacting important ecosystem processes. Recently, a strain assigned to Dyadobacter, named 'species 32', has been shown to be involved in a number of ecologically relevant diatom processes, such as biofilm formation or growth enhancement, depending on the diatom species. This bacterium was originally isolated from a culture of freshwater benthic diatoms that originated from an epilithic biofilm, in which both bacteria and diatoms coexist. A single complete circular chromosome of Dyadobacter sp. 32 was assembled with a length of 7,101,228 bp, containing 6062 protein coding genes and 3 rRNA operons. A number of interesting genetic features were found, such as a putative zeaxanthin biosynthetic gene cluster. A large number of polysaccharide utilizing gene clusters were also detected, along with genes potentially acquired from other bacteria through horizontal gene transfer, and genes previously identified in other algae-bacteria interactions. These data serve to increase our understanding of specific interactions within freshwater biofilms, and identify a number of gene targets with which to study the molecular basis of diatom-bacteria interactions.
['Dow|Lachlan|L|', 'Morrissey|Kathryn Lee|KL|', 'Willems|Anne|A|', 'Kroth|Peter G|PG|']
D001317:Austria D018441:Biofilms D041964:Cytophagaceae D017377:Diatoms D016680:Genome, Bacterial D005858:Germany D060106:Lakes D012329:RNA, Bacterial D012336:RNA, Ribosomal, 16S D013557:Switzerland D000073336:Whole Genome Sequencing
Biofilm Zeaxanthin Extracellular polymeric substances Interspecies signaling Phycosphere