Figure 7
Competition between rhythmic and arrhythmic strains of cyanobacteria. Mutant strains with arrhythmic (CLAc), or dampened (CLAb) bioluminescence rhythm, as well as the rescued strains were competed against wild type strain under periodic and constant environments (LD cycles and LL, respectively). Rhythmic strains out competed the wild type strain under LD cycles, but the arrhythmic strains out competed rhythmic strains under LL. Middle panels represent initial composition of the competing strains. Values in the parenthesis indicate the free-running period of the cyanobacterial strains. (Figure modified after Woelfle et al, 2004 [97])