ArticleHorticulture research2021
Auxin response and transport during induction of pedicel abscission in tomato.
Article in Horticulture research, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 18 papers.
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Who cites it
18 citing papers in PubMed, 42 citations in OpenAlex.
- At the breaking point: developmental and molecular insights intoFrontiers in plant science · 2026Article
- Dynamic attributes of the pedicel: Key drivers, structure and function in angiosperms.Journal of biosciences · 2026Review
- Transcriptomic analysis reveals key genes and pathways involved in fruit abscission of Epimedium pubescens.BMC plant biology · 2025Article
- Transcriptome and Targeted Hormone Metabolome Reveal the Mechanism of Flower Abscission in Soybeans Under Shade.International journal of molecular sciences · 2025Article
- Expression analyses of sweet cherry AUX/IAAs and involvements of PavAUX/IAA9/11 in regulating fruitlet abscission.Plant cell reports · 2025Article
- Auxin Controls Root Gravitropic Response by Affecting Starch Granule Accumulation and Cell Wall Modification in Tomato.Plants (Basel, Switzerland) · 2025Article
- A KNOTTED1-LIKE HOMEOBOX PROTEIN1-interacting transcription factor SlGATA6 maintains the auxin-response gradient to inhibit abscission.Science advances · 2025Article
- Exploring the mechanism of seed shattering in Psathyrostachys juncea through histological analysis and comparative transcriptomics.BMC plant biology · 2024Article
- Phytohormonal dynamics in the abscission zone of Korla fragrant pear during calyx abscission: a visual study.Frontiers in plant science · 2024Article
- Abscission zone metabolism impacts pre- and post-harvest fruit quality: a very attaching story.Frontiers in plant science · 2024Review
- Auxin as an architect of the pectin matrix.Journal of experimental botany · 2023Review
- Effects of Low Temperature on Pedicel Abscission and Auxin Synthesis Key Genes of Tomato.International journal of molecular sciences · 2023Article
- Fine mapping and gene silencing pinpoint Capana10g002229 as a strong candidate gene regulating the deciduous character of ripe pepper fruit (Capsicum spp.).TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik · 2023Article
- Article
- A SlCLV3-SlWUS module regulates auxin and ethylene homeostasis in low light-induced tomato flower abscission.The Plant cell · 2022Article
- The HD-Zip transcription factor SlHB15A regulates abscission by modulating jasmonoyl-isoleucine biosynthesis.Plant physiology · 2022Article
- Transcriptome and targeted hormone metabolome reveal the molecular mechanisms of flower abscission in camellia.Frontiers in plant science · 2022Article
- Auxin Gradients Determine Reproductive Development in Pea (Pisum sativum).Physiologia plantarumArticle
Corrections and comments
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Authors and funding
6 authors at 4 institutions in 2 countries.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Auxin plays a central role in control of organ abscission, and it is thought that changes in the auxin gradient across the abscission zone are the primary determinant of the onset of abscission. The nature of this gradient, whether in concentration, flow, or perhaps in the response system has not conclusively been determined. We employed a DR5::GUS auxin response reporter system to examine the temporal and spatial distribution of the auxin response activity in response to developmental and environmental cues during pedicel abscission in tomato. In pedicels of young and fully open flowers, auxin response, as indicated by GUS activity, was predominantly detected in the vascular tissues and was almost entirely confined to the abscission zone (AZ) and to the distal portion of the pedicel, with a striking reduction in the proximal tissues below the AZ-a 'step', rather than a gradient. Following pollination and during early fruit development, auxin response increased substantially throughout the pedicel. Changes in GUS activity following treatments that caused pedicel abscission (flower removal, high temperature, darkness, ethylene, or N-1-naphthylphthalamic acid (NPA) treatment) were relatively minor, with reduced auxin response in the AZ and some reduction above and below it. Expression of genes encoding some auxin efflux carriers (PIN) and influx carriers (AUX⁄LAX) was substantially reduced in the abscission zone of NPA-treated pedicels, and in pedicels stimulated to abscise by flower removal. Our results suggest that changes in auxin flow distribution through the abscission zone are likely more important than the auxin response system in the regulation of abscission.
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Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.