Activity of brassinosteroids in the dwarf rice lamina inclination bioassay

Biological activities of brassinolide, its biosynthetic intermediates and some biosynthetically related brassinosteroids were evaluated using modified dwarf rice lamina inclination bioassay

Shozo Fujioka; Takahiro Noguchi; Suguru Takatsuto; Shigeo Yoshida

2002

Scholarcy highlights

  • Biological activities of brassinolide, its biosynthetic intermediates and some biosynthetically related brassinosteroids were evaluated using modified dwarf rice lamina inclination bioassay
  • Under co-application of 5 μg IAA, the minimum detectable amount of brassinolide was less than 0.01 ng/rice plant
  • Biological activity increased according to the order of the biosynthetic pathway
  • Even very early biosynthetic intermediates such as campestanol showed some activity in our modified bioassay

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