Brassinosteroid-Induced Bending of the Leaf Lamina of Dwarf Rice Seedlings: An Auxin-Mediated Phenomenon

A synthetic brassinosteroid, 2α,3α,22β,23β-tetrahydroxy-24β-methyl-B-homo 7-oxa-5α-cholestan-6-one, an isomer of the growth promoter brassinolide, when applied to seedlings of dwarf rice Oryza sativa var

Kiyotoshi Takeno; Richard P. Pharis

2017

Scholarcy highlights

  • A synthetic brassinosteroid, 2α,3α,22β,23β-tetrahydroxy-24β-methyl-B-homo 7-oxa-5α-cholestan-6-one, an isomer of the growth promoter brassinolide, when applied to seedlings of dwarf rice Oryza sativa var
  • Gibberellin A3 had no significant effect on the bending of the second leaf lamina, nor did any synergism exist between BR and GA3 in leaf lamina bending or leaf sheath elongation
  • IAA and α-naphthaleneacetic acid caused significant bending at 5,000 ng/plant, and both auxins significantly synergized the effect of BR on the bending, IAA being effective at 500 ng/ plant in this regard
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