Title : KAI2 promotes Arabidopsis root hair elongation at low external phosphate by controlling local accumulation of AUX1 and PIN2.

Pub. Date : 2022 Jan 10

PMID : 34758285






2 Functional Relationships(s)
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1 Consistent with AUX1 and PIN2 accumulation being mediated via ethylene signaling,3 expression of 1-AMINOCYCLOPROPANE-1-CARBOXYLATE SYNTHASE 7 (ACS7) is increased at low Pi in a KAI2-dependent manner, and treatment with an ethylene precursor restores RH elongation of acs7, but not of aux1 and pin2. ethylene Auxin efflux carrier family protein Arabidopsis thaliana
2 Thus, KAI2 signaling is increased by phosphate starvation to trigger an ethylene- AUX1/PIN2-auxin cascade required for RH elongation. ethylene Auxin efflux carrier family protein Arabidopsis thaliana