A Network of Feedforward Loops Connects Plants' Aging and Daily Oscillartory Clocks (IMAGE)

Institute for Basic Science

A Network of Feedforward Loops Connects Plants' Aging and Daily Oscillartory Clocks

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Figure 2: A network of feedforward loops connects plants' aging and daily oscillatory clocks. IBS scientists confirmed that a core component of the daily clock, PSEUDO-RESPONSE REGULATOR 9 (PRR9), controls the expression of the aging regulator, ORE1 gene. More specifically, PRR9 promotes ORE1 via direct transcriptional activation and indirectly by suppressing miR164, a post-transcriptional repressor of ORE1. The results of this study indicate that, plants' circadian clock and leaf senescence are intimately interwoven as are the daily clock and aging in animals.

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