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Root hair number was reduced in hda6 roots. A, Ectopic nonroot hairs at the H position were observed in the mature zone of hda6 root. Bars = 50 μm. B, Root hair density was reduced in hda6 root. At least 20 roots were analyzed for each line. ***, P < 0.001, Student’s t test. C, The expression of GL2 downstream genes was detected in hda6. **, P < 0.01 and *, P < 0.05, Student’s t test.
