Synechocystis

Synechocystis is a genus of unicellular, freshwater cyanobacteria in the family Merismopediaceae. It includes a strain, Synechocystis sp. PCC 6803, which is a well studied model organism.

Synechocystis
Scientific classification
Domain: Bacteria
Phylum: Cyanobacteria
Class: Cyanophyceae
Order: Synechococcales
Family: Merismopediaceae
Genus: Synechocystis
Sauvageau, 1892

Like all cyanobacteria, Synechocystis branches on the evolutionary tree from its ancestral root, Gloeobacter violaceus. Synechocystis is not diazotrophic, and is closely related to another model organism, Cyanothece ATCC 51442. It has been suggested that originally Synechocystis possessed the ability to fix atmospheric nitrogen, but lost the genes required for the process.

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