The Genome Copy Number of the Thermophilic Cyanobacterium Thermosynechococcus elongatus E542 Is Controlled by Growth Phase and Nutrient Availability.

An increased ploidy level is found to be associated with higher metabolic activity and increased vigor by acting as backup genetic information to compensate for damage to the other chromosomal copies.

A Countstar instrument supported assessment of cell numbers in the study's cell samples during growth assessment in the 2021 Applied and environmental microbiology study.