A mutant gibberellin-synthesis gene in rice

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 i...

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Published inNature (London) Vol. 416; no. 6882; pp. 701 - 702
Main Authors Sasaki, A, Ashikari, M, Ueguchi-Tanaka, M, Itoh, H, Et al
Format Journal Article
LanguageEnglish
Published London Nature Publishing Group 18.04.2002
Subjects
Biosynthesis
Famine
Freshwater
Genes
gibberellin
Green revolution
Mutation
Oryza sativa
Phenotypes
Plant growth
Rice
sd1 gene
World population
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Summary: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.
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ISSN:0028-0836
1476-4687
DOI:10.1038/416701a