However, the notion emerging from our results that any OPS effects on BIN2 activity might not be mediated by the canonical downstream factors of BR signaling is also supported by the relatively small, statistically borderline significant effect of dominant bzr1-D or bes1-D mutation on ops root phenotypes ( Anne et al., 2015 ), especially when compared with the substantial bzr1-D or bes1-D rescue of bri1 root growth ( Chaiwanon and Wang, 2015 ).
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Brassinosteroid signaling directs formative cell divisions and protophloem differentiation in Arabidopsis root meristems.
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