title: Proposal of fifteen new species of Parasynechococcus based on genomic, physiological and ecological features.
abstract: Members of the recently proposed genus Parasynechococcus (Cyanobacteria) are extremely abundant throughout the global ocean and contribute significantly to global primary productivity. However, the taxonomy of these organisms remains poorly characterized. The aim of this study was to propose a new taxonomic framework for Parasynechococcus based on a genomic taxonomy approach that incorporates genomic, physiological and ecological data. Through in silico DNA-DNA hybridization, average amino acid identity, dinucleotide signatures and phylogenetic reconstruction, a total of 15 species of Parasynechococcus could be delineated. Each species was then described on the basis of their gene content, light and nutrient utilization strategies, geographical distribution patterns throughout the oceans and response to environmental parameters.
authors.affiliation: Instituto de Biologia (IB), Universidade Federal do Rio de Janeiro (UFRJ), Rio de Janeiro, Brazil.|Centre for Molecular and Biomolecular Informatics (CMBI), Radboud Institute for Molecular Life Sciences, Radboud University Medical Centre, Nijmegen, The Netherlands.
authors.forename: F H
authors.initials: FH
authors.lastname: Coutinho
authors.affiliation: Theoretical Biology and Bioinformatics, Utrecht University, Utrecht, The Netherlands.
authors.forename: B E
authors.initials: BE
authors.lastname: Dutilh
authors.affiliation: Instituto de Biologia (IB), Universidade Federal do Rio de Janeiro (UFRJ), Rio de Janeiro, Brazil. thompsoncristiane@gmail.com.
authors.forename: C C
authors.initials: CC
authors.lastname: Thompson
authors.affiliation: Instituto de Biologia (IB), Universidade Federal do Rio de Janeiro (UFRJ), Rio de Janeiro, Brazil. fabianothompson1@gmail.com.|COPPE, SAGE, Universidade Federal do Rio de Janeiro (UFRJ), Rio de Janeiro, Brazil. fabianothompson1@gmail.com.|CCS, IB, BIOMAR, Laboratório de Microbiologia, Cidade Universitária, Av. Carlos Chagas Filho. S/N, BLOCO A (Anexo) A3 - sl 102, Rio de Janeiro, RJ, 21941-599, Brazil. fabianothompson1@gmail.com.
authors.forename: F L
authors.initials: FL
authors.lastname: Thompson
mesh_terms: D000458:Cyanobacteria / Q000145:classification* / Q000235:genetics / Q000502:physiology; D016680:Genome, Bacterial / Q000235:genetics; D023281:Genomics; D009693:Nucleic Acid Hybridization; D009792:Oceans and Seas; D010802:Phylogeny; D014871:Water Microbiology
keywords: Cyanobacteria; Genomic taxonomy; Pan-genome; Parasynechococcus