Manipulating plants' internal clock offers possibility of all-season crops

Circadian rhythms are a roughly 24-hour cycle governing biochemical, physiological, or behavioral processes that have been widely observed not only in humans, but other animals, fungi, cyanobacteria and plants. In plants, circadian rhythms help synchronize biological processes with day and night to control photosynthesis, tell the plant what season it is, and the best time to flower to attract insects. Yale University researchers have now identified a key genetic gear that keeps the circadian clock in plants ticking, offering the prospect of engineering plants that can grow all year round and in locations where that's is not currently possible.

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