ArticleBMC plant biology2016
Regulation of polar auxin transport in grapevine fruitlets (Vitis vinifera L.) and the proposed role of auxin homeostasis during fruit abscission.
Article in BMC plant biology, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 17 papers.
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Who cites it
17 citing papers in PubMed, 49 citations in OpenAlex.
- Unexpected Dual Function of Plant YUCCA Enzymes Links Chlorophyll Catabolism to Auxin Homeostasis.Angewandte Chemie (International ed. in English) · 2026Article
- At the breaking point: developmental and molecular insights intoFrontiers in plant science · 2026Article
- Unraveling the Hormonal and Molecular Mechanisms Shaping Fruit Morphology in Plants.Plants (Basel, Switzerland) · 2025Review
- The Variability of Berry Parameters Could Be an Indicator of the Potential Quality of the Vineyard.Plants (Basel, Switzerland) · 2024Article
- NnARF17 and NnARF18 from lotus promote root formation and modulate stress tolerance in transgenic Arabidopsis thaliana.BMC plant biology · 2024Article
- Auxin efflux carrier PsPIN4 identified through genome-wide analysis as vital factor of petal abscission.Frontiers in plant science · 2024Article
- Phytohormonal dynamics in the abscission zone of Korla fragrant pear during calyx abscission: a visual study.Frontiers in plant science · 2024Article
- The HD-Zip transcription factor SlHB15A regulates abscission by modulating jasmonoyl-isoleucine biosynthesis.Plant physiology · 2022Article
- Understanding the Role ofBiology · 2022Article
- A multifaceted comparison between the fruit-abscission and fruit-retention cultivars in ornamental crabapple.Frontiers in plant science · 2022Article
- Comparative Analysis of the Transcriptomes of Persisting and Abscised Fruitlets: Insights into Plant Hormone and Carbohydrate Metabolism Regulated Self-Thinning of Pecan Fruitlets during the Early Stage.Current issues in molecular biology · 2021Article
- Transcriptome Analysis Reveals Potential Mechanisms for Ethylene-Inducible Pedicel-Fruit Abscission Zone Activation in Non-Climacteric Sweet Cherry (Horticulturae · 2021Article
- The role of auxin during early berry development in grapevine as revealed by transcript profiling from pollination to fruit set.Horticulture research · 2021Article
- Expression Analysis of Key Auxin Biosynthesis, Transport, and Metabolism Genes ofPlants (Basel, Switzerland) · 2020Article
- Comparative Proteomics Profiling Illuminates the Fruitlet Abscission Mechanism of Sweet Cherry as Induced by Embryo Abortion.International journal of molecular sciences · 2020Article
- Relationships Between Cell Structure Alterations and Berry Abscission in Table Grapes.Frontiers in nutrition · 2020Article
- Differences in Flower Transcriptome between Grapevine Clones Are Related to Their Cluster Compactness, Fruitfulness, and Berry Size.Frontiers in plant science · 2017Article
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Authors and funding
8 authors at 2 institutions in 2 countries.
Funding
Abstract
backgroundIndole-3-acetic acid (IAA), the most abundant auxin, is a growth promoter hormone involved in several developmental processes. Auxin homeostasis is very important to its function and this is achieved through the regulation of IAA biosynthesis, conjugation, degradation and transport. In grapevine, IAA plays an essential role during initial stages of berry development, since it delays fruitlet abscission by reducing the ethylene sensitivity in the abscission zone. For this reason, Continuous polar IAA transport to the pedicel is required. This kind of transport is controlled by IAA, which regulates its own movement by modifying the expression and localization of PIN-FORMED (PIN) auxin efflux facilitators that localize asymmetrically within the cell. On the other hand, the hormone gibberellin (GA) also activates the polar auxin transport by increasing PIN stability. In Vitis vinifera, fruitlet abscission occurs during the first two to three weeks after flowering. During this time, IAA and GA are present, however the role of these hormones in the control of polar auxin transport is unknown.
resultsIn this work, the use of radiolabeled IAA showed that auxin is basipetally transported during grapevine fruitlet abscission. This observation was further supported by immunolocalization of putative VvPIN proteins that display a basipetal distribution in pericarp cells. Polar auxin transport and transcripts of four putative VvPIN genes decreased in conjunction with increased abscission, and the inhibition of polar auxin transport resulted in fruit drop. GA
conclusionsThese results provide evidence that auxin homeostasis plays a central role during grapevine initial fruit development and that GA and IAA controls auxin homeostasis by reducing polar auxin transport.
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