ArticleBMC plant biology2014
ASYMMETRIC LEAVES1 regulates abscission zone placement in Arabidopsis flowers.
Article in BMC plant biology, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 24 papers.
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24 citing papers in PubMed, 44 citations in OpenAlex.
- Convergent evolution of the developmental anatomy of leaf abscission: evidence from the arboreous lycopsid Sigillaria.Annals of botany · 2026Article
- Evolutionary Conservation and Regulatory Diversification ofInternational journal of molecular sciences · 2025Article
- Abscission zones: cellular interfaces for the programmed separation of organs.Annals of botany · 2025Review
- Genome-wide association analysis in identification of superior haplotypes for vegetative stage drought stress tolerance in rice.Physiology and molecular biology of plants : an international journal of functional plant biology · 2025Article
- Abscission in plants: from mechanism to applications.Advanced biotechnology · 2024Review
- Identification ofPhysiology and molecular biology of plants : an international journal of functional plant biology · 2024Article
- Genome-Wide Identification of theInternational journal of molecular sciences · 2022Article
- Transcriptomics Using the Enriched Arabidopsis Shoot Apex Reveals Developmental Priming Genes Involved in Plastic Plant Growth under Salt Stress Conditions.Plants (Basel, Switzerland) · 2022Article
- Genome-Wide Identification and Analysis of Lbd Transcription Factor Genes inPlants (Basel, Switzerland) · 2022Article
- Leaf rolling in bread wheat (Frontiers in plant science · 2022Article
- Functional characterization of PETIOLULE-LIKE PULVINUS (PLP) gene in abscission zone development in Medicago truncatula and its application to genetic improvement of alfalfa.Plant biotechnology journal · 2021Article
- Bioinformatics and Expression Analysis of IDA-Like Genes Reveal Their Potential Functions in Flower Abscission and Stress Response in Tobacco (Frontiers in genetics · 2021Article
- First approach to pod dehiscence in faba bean: genetic and histological analyses.Scientific reports · 2020Article
- Identification and Characterization of HAESA-Like Genes Involved in the Fruitlet Abscission in Litchi.International journal of molecular sciences · 2019Article
- Transcriptional Regulation of Abscission Zones.Plants (Basel, Switzerland) · 2019Review
- Redundant CArG BoxFrontiers in plant science · 2017Article
- Histological Characteristics, Cell Wall Hydrolytic Enzymes Activity and Candidate Genes Expression Associated with Seed Shattering ofFrontiers in plant science · 2017Article
- Genome-wide identification of cassava R2R3 MYB family genes related to abscission zone separation after environmental-stress-induced abscission.Scientific reports · 2016Article
- Identification and expression analysis of genes related to calyx persistence in Korla fragrant pear.BMC genomics · 2016Article
- Allele-Specific Interactions betweenFrontiers in plant science · 2016Article
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Authors and funding
5 authors at 1 institution in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
backgroundThe sepals, petals and stamens of Arabidopsis flowers detach via abscission zones formed at their boundaries with the underlying receptacle. The ASYMMETRIC LEAVES1 (AS1) MYB transcription factor plays a critical role in setting boundaries between newly formed leaf primordia and the shoot meristem. By repressing expression of a set of KNOTTED1-LIKE HOMEODOMAIN (KNOX) genes from developing leaf primordia, AS1 and its partner ASYMMETRIC LEAVES2 allow the patterning and differentiation of leaves to proceed. Here we show a unique role for AS1 in establishing the positions of the sepal and petal abscission zones in Arabidopsis flowers.
resultsIn as1 mutant flowers, the sepal abscission zones are displaced into inverted V-shaped positions, leaving behind triangular stubs of tissue when the organs abscise. Movement of the petal abscission zones is also apparent. Abscission of the medial sepals is delayed in as1 flowers; loss of chlorophyll in the senescing sepals contrasts with proximal zones that remain green. AS1 has previously been shown to restrict expression of the KNOX gene, BREVIPEDICELLUS (BP), from the sepals. We show here that loss of BP activity in as1 flowers is sufficient to restore the positions of the sepal and petal abscission zones, the sepal-receptacle boundary of the medial sepals and the timing of their abscission.
conclusionsOur results indicate that AS1 activity is critical for the proper placement of the floral organ abscission zones, and influences the timing of organ shedding.
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