Light quality modulates metabolic synchronization over the diel phases of crassulacean acid metabolism.

ABSTRACT: Temporal compartmentation of carboxylation processes is a defining feature of crassulacean acid metabolism and involves circadian control of key metabolic and transport steps that regulate the supply and demand for carbon over a 24h cycle. Recent insights on the molecular workings of the circadian clock and its connection with environmental inputs raise new questions on the importance of light quality and, by analogy, certain photoreceptors for synchronizing the metabolic components of CAM. The present work tested the hypothesis that optimal coupling of stomatal conductance, net CO2 uptake, and the reciprocal turnover of carbohydrates and organic acids over the diel CAM cycle requires both blue and red light input signals. Contrasting monochromatic wavelengths of blue, green, and red light

SUBMITTER: Ceusters J 

PROVIDER: S-EPMC4085966 | biostudies-literature | 2014 Jul

REPOSITORIES: biostudies-literature