Plant Biology Select

Most organisms have daily rhythms set by environmental conditions such as light. Plants in particular are very sensitive to changes in their environment, responding to such changes with altered growth and development. At a molecular level, changes in the environment are detected and processed through an internal circadian clock. At the core of all circadian clocks is a transcriptional feedback loop; however, posttranslational modifications, such as phosphorylation and ubiquitination, are also important in the regulation of the circadian clock. Here we discuss recent studies on the plant circadian clock ranging from new posttranslational mechanisms that regulate the plant clock to how the plant clock mediates responses to the plant hormone auxin, thereby connecting the clock to growth and development