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Auxin (TAA1)

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  1. Open canopy R:FR>1 Shade R:FR<1 Shade avoidance pathway ? low R:FR Cytokinin Oxidase AtCKX6 Auxin(TAA1) cytokinin Leaf growth inhibition Auxin transport PIN3 Stem growth inhibition ? gibberellin High R:FR degradation Auxin induced genes low R:FR Stem growth promotion phy(Pfr) phy(Pr) DELLA PIF-induced genes DELLA PIFs HFR1 PIFs Credit : Yvon Jaillais 26S proteasome-regulated degradation