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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.

Author information

1
ZMBP, Entwicklungsgenetik, Universität Tübingen, D-72076 Tübingen, Federal Republic of Germany.

Abstract

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
PMCID:
PMC186366
DOI:
10.1101/gad.229402
[Indexed for MEDLINE]
Free PMC Article

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