Prevalence, evolution, and cis-regulation of diel transcription in Chlamydomonas reinhardtii.

ABSTRACT: Endogenous (circadian) and exogenous (e.g., diel) biological rhythms are a prominent feature of many living systems. In green algal species, knowledge of the extent of diel rhythmicity of genome-wide gene expression, its evolution, and its cis-regulatory mechanism is limited. In this study, we identified cyclically expressed genes under diel conditions in Chlamydomonas reinhardtii and found that ~50% of the 17,114 annotated genes exhibited cyclic expression. These cyclic expression patterns indicate a clear succession of biological processes during the course of a day. Among 237 functional categories enriched in cyclically expressed genes, >90% were phase-specific, including photosynthesis, cell division, and motility-related processes. By contrasting cyclic expression between C. reinhardt

SUBMITTER: Panchy N 

PROVIDER: S-EPMC4267941 | biostudies-literature | 2014 Oct

REPOSITORIES: biostudies-literature