Correct biological timing in Arabidopsis requires multiple light-signaling pathways.

ABSTRACT: Circadian oscillators provide rhythmic temporal cues for a range of biological processes in plants and animals, enabling anticipation of the day/night cycle and enhancing fitness-associated traits. We have used engineering models to understand the control principles of a plant's response to seasonal variation. We show that the seasonal changes in the timing of circadian outputs require light regulation via feed-forward loops, combining rapid light-signaling pathways with entrained circadian oscillators. Linear time-invariant models of circadian rhythms were computed for 3,503 circadian-regulated genes and for the concentration of cytosolic-free calcium to quantify the magnitude and timing of regulation by circadian oscillators and light-signaling pathways. Bioinformatic and experimental an

SUBMITTER: Dalchau N 

PROVIDER: S-EPMC2919914 | biostudies-literature | 2010 Jul

REPOSITORIES: biostudies-literature