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What is the evidence that SHORTROOT acts upstream of the SCARECROW gene?

What is the evidence that SHORTROOT acts upstream of the SCARECROW gene?

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required for SHORT ROOT and Scarecroal are stem cell maintenance in the Arabidopsis root menstem enarring its interminate groSHR act as a master regulero in the SHR SOR-SCL 23 regulatory module. Scho3 is able to modulate the activity frentwn of sur I

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