Phylogenetic analysis of Nostocales (Cyanobacteria) based on two novel molecular markers, implicated in the nitrogenase biosynthesis.

ABSTRACT: The characterization of cyanobacteria communities remains challenging, as taxonomy of several cyanobacterial genera is still unresolved, especially within Nostocales taxa. Nostocales cyanobacteria are capable of nitrogen fixation; nitrogenase genes are grouped into operons and are located in the same genetic locus. Structural nitrogenase genes (nifH, nifK and nifD) as well as 16S rRNA have been shown to be adequate genetic markers for distinguishing cyanobacterial genera. However, there is no available information regarding the phylogeny of regulatory genes of the nitrogenase cluster. Aiming to provide a more accurate overview of the evolution of nitrogen fixation, this study analyzed for the first time nifE and nifN genes, which regulate the production of nitrogenase, alongside nifH. Spec

SUBMITTER: Giannakopoulos C 

PROVIDER: S-EPMC12484802 | biostudies-literature | 2024 Jan

REPOSITORIES: biostudies-literature