INTERMEDIUM-C, a modifier of lateral spikelet fertility in barley, is an ortholog of the maize domestication gene TEOSINTE BRANCHED 1

Luke Ramsay, Jordi Comadran, Arnis Druka, David F. Marshall, William T. B. Thomas, Malcolm Macaulay, Katrin MacKenzie, Craig Simpson, John Fuller, Nicola Bonar, Patrick M. Hayes, Udda Lundqvist, Jerome D. Franckowiak, Timothy J. Close, Gary J. Muehlbauer, Robbie Waugh (Lead / Corresponding author)

    Research output: Contribution to journalLetter

    176 Citations (Scopus)

    Abstract

    The domestication of cereals has involved common changes in morphological features, such as seed size, seed retention and modification of vegetative and inflorescence architecture that ultimately contributed to an increase in harvested yield(1). In barley, this process has resulted in two different cultivated types, two-rowed and six-rowed forms, both derived from the wild two-rowed ancestor, with archaeo-botanical evidence indicating the origin of six-rowed barley early in the domestication of the species, some 8,600-8,000 years ago(2). Variation at SIX-ROWED SPIKE 1 (VRS1) is sufficient to control this phenotype. However, phenotypes imposed by VRS1 alleles are modified by alleles at the INTERMEDIUM-C (INT-C) locus. Here we show that INT-C is an ortholog of the maize domestication gene TEOSINTE BRANCHED 1 (TB1) and identify 17 coding mutations in barley TB1 correlated with lateral spikelet fertility phenotypes.

    Original languageEnglish
    Pages (from-to)169-172
    Number of pages4
    JournalNature Genetics
    Volume43
    Issue number2
    DOIs
    Publication statusPublished - Feb 2011

    Keywords

    • MOLECULAR EVOLUTION
    • TILLER DEVELOPMENT
    • MODEL
    • PLANT
    • POPULATION
    • RESISTANCE
    • PATTERNS
    • TEOSINTE
    • MUTANTS
    • GRASSES

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