a, Expression of ARR5 and PEAR1 overlaps at the initial stage (a’) and early proliferative phase (a”), n=15. b-c, Transcription of PEAR1 in wol root, which is conditionally rescued by CRE1 induction (Est, estradiol treated). PEAR1 transcription is severely reduced in the condition with attenuated cytokinin response (b, n=6), and is restored after three days induction of CRE1 (c, arrowheads, n=6). d-e,
PEAR1 transcription is down-regulated after 48 hours of ARR22 induction. n=5 and 7, respectively. In a-e, n represents independent biological samples. White arrowheads, PSE. Scale bars, 25 μm.