The genome sequence of <i>Synechocystis</i> sp. PCC 6803 substrain GT‐T and its implications for the evolution of PCC 6803 substrains
Satu Koskinen, Juha Kurkela, Markéta Linhartová, Taina Tyystjärvi
Abstract
Synechocystis sp. PCC 6803 is a model cyanobacterium, glucose-tolerant substrains of which are commonly used as laboratory strains. In recent years, it has become evident that 'wild-type' strains used in different laboratories show some differences in their phenotypes. We report here the chromosome sequence of our Synechocystis sp. PCC 6803 substrain, named substrain GT-T. The chromosome sequence of GT-T was compared to those of two other commonly used laboratory substrains, GT-S and PCC-M. We identified 11 specific mutations in the GT-T substrain, whose physiological consequences are discussed. We also provide an update on evolutionary relationships between different Synechocystis sp. PCC 6803 substrains.