ArticlePlant physiology2006
Molecular changes occurring during acquisition of abscission competence following auxin depletion in Mirabilis jalapa.
Article in Plant physiology, 2006. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 39 papers.
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Who cites it
39 citing papers in PubMed, 73 citations in OpenAlex.
- Article
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- A KNOTTED1-LIKE HOMEOBOX PROTEIN1-interacting transcription factor SlGATA6 maintains the auxin-response gradient to inhibit abscission.Science advances · 2025Article
- Dissection of the IDA promoter identifies WRKY transcription factors as abscission regulators in Arabidopsis.Journal of experimental botany · 2024Article
- Auxin efflux carrier PsPIN4 identified through genome-wide analysis as vital factor of petal abscission.Frontiers in plant science · 2024Article
- The HD-Zip transcription factor SlHB15A regulates abscission by modulating jasmonoyl-isoleucine biosynthesis.Plant physiology · 2022Article
- Potential Carbohydrate Regulation Mechanism Underlying Starvation-Induced Abscission of Tomato Flower.International journal of molecular sciences · 2022Article
- Integrative analysis of transcriptome, proteome, and ubiquitome changes during rose petal abscission.Frontiers in plant science · 2022Article
- A Non-Shedding FruitGenes · 2021Article
- Auxin response and transport during induction of pedicel abscission in tomato.Horticulture research · 2021Article
- Transcriptomics of Improved Fruit Retention by Hexanal in 'Honeycrisp' Reveals Hormonal Crosstalk and Reduced Cell Wall Degradation in the Fruit Abscission Zone.International journal of molecular sciences · 2021Article
- Potential Markers for Selecting Self-Eliminating Apple Genotypes.Plants (Basel, Switzerland) · 2021Article
- SlERF52 regulates SlTIP1;1 expression to accelerate tomato pedicel abscission.Plant physiology · 2021Article
- Multi-scale comparative transcriptome analysis reveals key genes and metabolic reprogramming processes associated with oil palm fruit abscission.BMC plant biology · 2021Article
- 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
- Comparative Proteomics Profiling Illuminates the Fruitlet Abscission Mechanism of Sweet Cherry as Induced by Embryo Abortion.International journal of molecular sciences · 2020Article
- Validation of MADS-box genes from apple fruit pedicels during early fruit abscission by transcriptome analysis and real-time PCR.Genes & genomics · 2019Article
- The Tomato Hybrid Proline-rich Protein regulates the abscission zone competence to respond to ethylene signals.Horticulture research · 2018Article
- SlPIN1 regulates auxin efflux to affect flower abscission process.Scientific reports · 2017Article
Corrections and comments
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Authors and funding
5 authors at 2 institutions in 3 countries.
Funding
No grant is acknowledged in the PubMed record.
Abstract
To understand how auxin regulates sensitivity of abscission zone (AZ) tissues to ethylene, we used a polymerase chain reaction-based subtractive approach to identify gene transcripts in Mirabilis jalapa AZs that changed in abundance during the time the zones became competent to abscise in response to exogenous ethylene. Transcript expression was then examined in leaf and stem AZs over the period they became ethylene competent following indole-3-acetic acid (IAA) depletion either by leaf deblading, treatment with the IAA transport inhibitor naphthylphthalamic acid, or cutting the stem above a node (decapitation). Transcripts down-regulated by deblading/decapitation included Mj-Aux/IAA1 and Mj-Aux/IAA2, encoding Aux/IAA proteins, and three other transcripts showing highest identity to a polygalacturonase inhibitor protein, a beta-expansin, and a beta-tubulin. Application of IAA to the cut end of petioles or stumps inhibited abscission, and prevented the decline in the levels of transcripts in both AZs. Transcripts up-regulated in the AZ following deblading/decapitation or treatment with naphthylphthalamic acid were isolated from plants pretreated with 1-methylcyclopropene before deblading to help select against ethylene-induced genes. Some of the up-regulated transcripts showed identity to proteins associated with ethylene or stress responses, while others did not show homology to known sequences. Sucrose infiltration of stem stumps enhanced abscission following ethylene treatment and also enhanced the induction of some of the up-regulated genes. Our results demonstrate a correlation between acquisition of competence to respond to ethylene in both leaf and stem AZs, and decline in abundance of auxin regulatory gene transcripts.
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