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    Genes Dev. 2002 Jul 1;16(13):1610-5.

    The Arabidopsis BODENLOS gene encodes an auxin response protein inhibiting MONOPTEROS-mediated embryo patterning.

    Hamann T, Benkova E, Bäurle I, Kientz M, Jürgens G.

    ZMBP, Entwicklungsgenetik, Universität Tübingen, D-72076 Tübingen, Federal Republic of Germany.

    Developmental responses to the plant hormone auxin are thought to be mediated by interacting pairs from two protein families: short-lived inhibitory IAA proteins and ARF transcription factors binding to auxin-response elements. monopteros mutants lacking activating ARF5 and the auxin-insensitive mutant bodenlos fail to initiate the root meristem during early embryogenesis. Here we show that the bodenlos phenotype results from an amino-acid exchange in the conserved degradation domain of IAA12. BODENLOS and MONOPTEROS interact in the yeast two-hybrid assay and the two genes are coexpressed in early embryogenesis, suggesting that BODENLOS inhibits MONOPTEROS action in root meristem initiation.

    PMID: 12101120 [PubMed - indexed for MEDLINE]

    PMCID: 186366

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