Green revolution: a mutant gibberellin-synthesis gene in rice

Nature. 2002 Apr 18;416(6882):701-2. doi: 10.1038/416701a.


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'. 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 also implicated in green-revolution varieties of wheat, but the reduced height of those crops is conferred by defects in the hormone's signalling pathway.

MeSH terms

  • Crops, Agricultural / classification
  • Crops, Agricultural / enzymology
  • Crops, Agricultural / genetics
  • Food Supply
  • Genes, Plant / genetics*
  • Gibberellins / biosynthesis*
  • Gibberellins / genetics
  • Mutation / genetics*
  • Oryza / classification
  • Oryza / enzymology
  • Oryza / genetics*
  • Phenotype


  • Gibberellins