A mutant gibberellin-synthesis gene in rice

The short stature of IR8 is due to a mutation in the plant's sd1 gene, and here we identify this gene as encoding an oxidase enzyme involved in the biosynthesis of gibberellin, a plant growth hormone

A. Sasaki; M. Ashikari; M. Ueguchi-Tanaka; H. Itoh; A. Nishimura; D. Swapan; K. Ishiyama; T. Saito; M. Kobayashi; G. S. Khush; H. Kitano; M. Matsuoka

2002

Scholarcy highlights

  • New insight into the rice variant that helped to avert famine over thirty years ago
  • The chronic food shortage that was feared after the rapid expansion of the world population in the 1960s was averted largely by the development of a high-yielding semi-dwarf variety of rice known as IR8, the so-called rice 'green revolution'1,2,3
  • The short stature of IR8 is due to a mutation in the plant's sd1 gene, and here we identify this gene as encoding an oxidase enzyme involved in the biosynthesis of gibberellin, a plant growth hormone
  • Gibberellin is implicated in green-revolution varieties of wheat, but the reduced height of those crops is conferred by defects in the hormone's signalling pathway4

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