ArticleProceedings of the National Academy of Sciences of the United States of America2002
The homeobox gene BREVIPEDICELLUS is a key regulator of inflorescence architecture in Arabidopsis.
Article in Proceedings of the National Academy of Sciences of the United States of America, 2002. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 126 papers.
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126 citing papers in PubMed, 276 citations in OpenAlex.
- Dynamic attributes of the pedicel: Key drivers, structure and function in angiosperms.Journal of biosciences · 2026Review
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- Evolution of a SHOOTMERISTEMLESS transcription factor binding site promotes fruit shape determination.Nature plants · 2025Article
- Cytokinin-related genes regulate cucumber fruit pedicel length.Scientific reports · 2024Article
- Mapping and transcriptomic profiling reveal that the KNAT6 gene is involved in the dark green peel colour of mature pumpkin fruit (Cucurbita maxima L.).TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik · 2024Article
- Arabidopsis transcription factor TCP4 controls the identity of the apical gynoecium.The Plant cell · 2024Article
- GHCU, a Molecular Chaperone, Regulates Leaf Curling by Modulating the Distribution of KNGH1 in Cotton.Advanced science (Weinheim, Baden-Wurttemberg, Germany) · 2024Article
- AtHSPR functions in gibberellin-mediated primary root growth by interacting with KNAT5 and OFP1 in Arabidopsis.Plant cell reports · 2023Article
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- Genome-Wide Identification of theGenes · 2023Article
- Arabidopsis histone H3 lysine 9 methyltransferases KYP/SUVH5/6 are involved in leaf development by interacting with AS1-AS2 to repress KNAT1 and KNAT2.Communications biology · 2023Article
- Fine Mapping of a Pleiotropic Locus (International journal of molecular sciences · 2023Article
- BREVIPEDICELLUS Positively Regulates Salt-Stress Tolerance inInternational journal of molecular sciences · 2023Article
- Improvement of RNA In Situ Hybridisation for Grapevine Fruits and Ovules.International journal of molecular sciences · 2023Article
- BREVIPEDICELLUS/KNAT1 targets TCP15 to modulate filament elongation during Arabidopsis late stamen development.Plant physiology · 2023Article
- Targeted mutagenesis ofFrontiers in plant science · 2023Article
- A coiled-coil protein associates Polycomb Repressive Complex 2 with KNOX/BELL transcription factors to maintain silencing of cell differentiation-promoting genes in the shoot apex.The Plant cell · 2022Article
66 more citing papers are in PubMed but not listed here.
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Authors and funding
9 authors at 2 institutions in 2 countries.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Flowering plants display a remarkable range of inflorescence architecture, and pedicel characteristics are one of the key contributors to this diversity. However, very little is known about the genes or the pathways that regulate pedicel development. The brevipedicellus (bp) mutant of Arabidopsis thaliana displays a unique phenotype with defects in pedicel development causing downward-pointing flowers and a compact inflorescence architecture. Cloning and molecular analysis of two independent mutant alleles revealed that BP encodes the homeodomain protein KNAT1, a member of the KNOX family. bp-1 is a null allele with deletion of the entire locus, whereas bp-2 has a point mutation that is predicted to result in a truncated protein. In both bp alleles, the pedicels and internodes were compact because of fewer cell divisions; in addition, defects in epidermal and cortical cell differentiation and elongation were found in the affected regions. The downward-pointing pedicels were produced by an asymmetric effect of the bp mutation on the abaxial vs. adaxial sides. Cell differentiation, elongation, and growth were affected more severely on the abaxial than adaxial side, causing the change in the pedicel growth angle. In addition, bp plants displayed defects in cell differentiation and radial growth of the style. Our results show that BP plays a key regulatory role in defining important aspects of the growth and cell differentiation of the inflorescence stem, pedicel, and style in Arabidopsis.
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