Guard cells control hypocotyl elongation through HXK1, HY5, and PIF4

Guard cells control hypocotyl elongation through HXK1, HY5, and PIF4

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Kelly et allflex 840 tags al.show that Arabidopsis hexokinase1 (HXK1) expressed in guard-cells is sufficient to drive hypocotyl elongation through increasing the activity of PIF4 and auxin level, and competing with the effects of HY5.This study provides insights into how light and sucrose antagonistically coordinate the effort groth cabernet sauvignon 2017 to achieve the height necessary for efficient photosynthetic, autotrophic sugar production.