Root PRR7 Improves the Accuracy of the Shoot Circadian Clock through Nutrient Transport.

ABSTRACT: The circadian clock allows plants to anticipate and adapt to periodic environmental changes. Organ- and tissue-specific properties of the circadian clock and shoot-to-root circadian signaling have been reported. While this long-distance signaling is thought to coordinate physiological functions across tissues, little is known about the feedback regulation of the root clock on the shoot clock in the hierarchical circadian network. Here, we show that the plant circadian clock conveys circadian information between shoots and roots through sucrose and K+. We also demonstrate that K+ transport from roots suppresses the variance of period length in shoots and then improves the accuracy of the shoot circadian clock. Sucrose measurements and qPCR showed that root sucrose accumulation was regulated

SUBMITTER: Uemoto K 

PROVIDER: S-EPMC10016326 | biostudies-literature | 2023 Mar

REPOSITORIES: biostudies-literature