Blue light induces major changes in the gene expression profile of the cyanobacterium Synechocystis sp. PCC 6803.

ABSTRACT: Although cyanobacteria absorb blue light, they use it less efficiently for photosynthesis than other colors absorbed by their photosynthetic pigments. A plausible explanation for this enigmatic phenomenon is that blue light is not absorbed by phycobilisomes and, hence, causes an excitation shortage at photosystem II (PSII). This hypothesis is supported by recent physiological studies, but a comprehensive understanding of the underlying changes in gene expression is still lacking. In this study, we investigate how a switch from artificial white light to blue, orange or red light affects the transcriptome of the cyanobacterium Synechocystis sp. PCC 6803. In total, 145 genes were significantly regulated in response to blue light, whereas only a few genes responded to orange and red light. In

SUBMITTER: Luimstra VM 

PROVIDER: S-EPMC7496141 | biostudies-literature | 2020 Sep

REPOSITORIES: biostudies-literature