ArticleJournal of experimental botany2015
Abscission of flowers and floral organs is closely associated with alkalization of the cytosol in abscission zone cells.
Article in Journal of experimental botany, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 25 papers.
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Who cites it
25 citing papers in PubMed, 64 citations in OpenAlex.
- A hierarchical abscission program regulates reproductive allocation inHorticulture research · 2026Article
- Dynamic attributes of the pedicel: Key drivers, structure and function in angiosperms.Journal of biosciences · 2026Review
- Abscission zones: cellular interfaces for the programmed separation of organs.Annals of botany · 2025Review
- Integrated Transcriptomic and Metabolomic Profiling Identifies Candidate Genes and Pathways Associated With Pedicel Abscission Susceptibility inFood science & nutrition · 2025Article
- Morphological and genetic characterization of the muscadine fruit abscission zone.Horticulture research · 2024Article
- LcMPK3 and LcMPK6 positively regulate fruitlet abscission in litchi.Molecular horticulture · 2024Article
- Towards Understanding the Involvement of HMolecules (Basel, Switzerland) · 2021Article
- Brassinosteroids suppress ethylene-induced fruitlet abscission through LcBZR1/2-mediated transcriptional repression of LcACS1/4 and LcACO2/3 in litchi.Horticulture research · 2021Article
- SlERF52 regulates SlTIP1;1 expression to accelerate tomato pedicel abscission.Plant physiology · 2021Article
- Cross-talk between transcriptome, phytohormone and HD-ZIP gene family analysis illuminates the molecular mechanism underlying fruitlet abscission in sweet cherry (Prunus avium L).BMC plant biology · 2021Article
- Characterization of Two Ethephon-InducedGenes · 2021Article
- Multi-scale comparative transcriptome analysis reveals key genes and metabolic reprogramming processes associated with oil palm fruit abscission.BMC plant biology · 2021Article
- The LcKNAT1-LcEIL2/3 Regulatory Module Is Involved in Fruitlet Abscission in Litchi.Frontiers in plant science · 2021Article
- Comparative Proteomics Profiling Illuminates the Fruitlet Abscission Mechanism of Sweet Cherry as Induced by Embryo Abortion.International journal of molecular sciences · 2020Article
- Identification and Characterization of HAESA-Like Genes Involved in the Fruitlet Abscission in Litchi.International journal of molecular sciences · 2019Article
- The HD-Zip transcription factor LcHB2 regulates litchi fruit abscission through the activation of two cellulase genes.Journal of experimental botany · 2019Article
- Control of Organ Abscission and Other Cell Separation Processes by Evolutionary Conserved Peptide Signaling.Plants (Basel, Switzerland) · 2019Review
- The Tomato Hybrid Proline-rich Protein regulates the abscission zone competence to respond to ethylene signals.Horticulture research · 2018Article
- Modifications in Organic Acid Profiles During Fruit Development and Ripening: Correlation or Causation?Frontiers in plant science · 2018Review
- Dead or Alive? Using Membrane Failure and ChlorophyllPlant physiology · 2017Article
Corrections and comments
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Authors and funding
7 authors at 3 institutions in 2 countries.
Funding
No grant is acknowledged in the PubMed record.
Abstract
In vivo changes in the cytosolic pH of abscission zone (AZ) cells were visualized using confocal microscopic detection of the fluorescent pH-sensitive and intracellularly trapped dye, 2',7'-bis-(2-carboxyethyl)-5(and-6)-carboxyfluorescein (BCECF), driven by its acetoxymethyl ester. A specific and gradual increase in the cytosolic pH of AZ cells was observed during natural abscission of flower organs in Arabidopsis thaliana and wild rocket (Diplotaxis tenuifolia), and during flower pedicel abscission induced by flower removal in tomato (Solanum lycopersicum Mill). The alkalization pattern in the first two species paralleled the acceleration or inhibition of flower organ abscission induced by ethylene or its inhibitor 1-methylcyclopropene (1-MCP), respectively. Similarly, 1-MCP pre-treatment of tomato inflorescence explants abolished the pH increase in AZ cells and pedicel abscission induced by flower removal. Examination of the pH changes in the AZ cells of Arabidopsis mutants defective in both ethylene-induced (ctr1, ein2, eto4) and ethylene-independent (ida, nev7, dab5) abscission pathways confirmed these results. The data indicate that the pH changes in the AZ cells are part of both the ethylene-sensitive and -insensitive abscission pathways, and occur concomitantly with the execution of organ abscission. pH can affect enzymatic activities and/or act as a signal for gene expression. Changes in pH during abscission could occur via regulation of transporters in AZ cells, which might affect cytosolic pH. Indeed, four genes associated with pH regulation, vacuolar H(+)-ATPase, putative high-affinity nitrate transporter, and two GTP-binding proteins, were specifically up-regulated in tomato flower AZ following abscission induction, and 1-MCP reduced or abolished the increased expression.
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