Circadian clock controls plant growth hormone

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Growth in Arabidopsis seedlings is influenced by the plants internal clock through the plant hormone auxin. Credit: Michael CovingtonUC-Davis
Growth in Arabidopsis seedlings is influenced by the plant's internal clock through the plant hormone auxin. Credit: Michael Covington/UC-Davis

The plant growth hormone auxin is controlled by circadian rhythms within the plant, UC Davis researchers have found. The discovery explains how plants can time their growth to take advantage of resources such as light and water, and suggests that many other processes may be influenced by circadian rhythms.


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