ArticleInternational journal of molecular sciences2020
Disruption of the Auxin Gradient in the Abscission Zone Area Evokes Asymmetrical Changes Leading to Flower Separation in Yellow Lupine.
Article in International journal of molecular sciences, 2020. 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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17 citing papers in PubMed, 38 citations in OpenAlex.
- Auxin biosynthetic key geneFrontiers in plant science · 2026Article
- Transcriptomic analysis reveals key genes and pathways involved in fruit abscission of Epimedium pubescens.BMC plant biology · 2025Article
- miRNA-targeted auxin nuclear signalling elements orchestrate flower fate and drought response in yellow lupine.Scientific reports · 2025Article
- Transcriptome and Targeted Hormone Metabolome Reveal the Mechanism of Flower Abscission in Soybeans Under Shade.International journal of molecular sciences · 2025Article
- Immunocytochemical Detection of Phytohormones and Phytohormone-Related Compounds in Abscission Zones.Methods in molecular biology (Clifton, N.J.) · 2025Article
- Auxin efflux carrier PsPIN4 identified through genome-wide analysis as vital factor of petal abscission.Frontiers in plant science · 2024Article
- Thidiazuron combined with cyclanilide modulates hormone pathways and ROS systems in cotton, increasing defoliation at low temperatures.Frontiers in plant science · 2024Article
- Auxin as an architect of the pectin matrix.Journal of experimental botany · 2023Review
- Phytohormones and candidate genes synergistically regulate fruitlet abscission in Areca catechu L.BMC plant biology · 2023Article
- Comparative Physiological and Transcriptomic Mechanisms of Defoliation in Cotton in Response to Thidiazuron versus Ethephon.International journal of molecular sciences · 2023Article
- Low Temperature Inhibits the Defoliation Efficiency of Thidiazuron in Cotton by Regulating Plant Hormone Synthesis and the Signaling Pathway.International journal of molecular sciences · 2022Article
- Thidiazuron Promotes Leaf Abscission by Regulating the Crosstalk Complexities between Ethylene, Auxin, and Cytokinin in Cotton.International journal of molecular sciences · 2022Article
- Jasmonate-Dependent Response of the Flower Abscission Zone Cells to Drought in Yellow Lupine.Plants (Basel, Switzerland) · 2022Article
- EPIP-Evoked Modifications of Redox, Lipid, and Pectin Homeostasis in the Abscission Zone of Lupine Flowers.International journal of molecular sciences · 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
- Drought Disrupts Auxin Localization in Abscission Zone and Modifies Cell Wall Structure Leading to Flower Separation in Yellow Lupine.International journal of molecular sciences · 2020Article
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Authors and funding
4 authors at 4 institutions in 2 countries.
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Abstract
How auxin transport regulates organ abscission is a long-standing and intriguing question. Polar auxin transport across the abscission zone (AZ) plays a more important role in the regulation of abscission than a local concentration of this hormone. We recently reported the existence of a spatiotemporal sequential pattern of the indole-3-acetic acid (IAA) localization in the area of the yellow lupine AZ, which is a place of flower detachment. In this study, we performed analyses of AZ following treatment with an inhibitor of polar auxin transport (2,3,5-triiodobenzoic acid (TIBA)). Once we applied TIBA directly onto the AZ, we observed a strong response as demonstrated by enhanced flower abscission. To elucidate the molecular events caused by the inhibition of auxin movement, we divided the AZ into the distal and proximal part. TIBA triggered the formation of the IAA gradient between these two parts. The AZ-marker genes, which encode the downstream molecular components of the inflorescence deficient in abscission (IDA)-signaling system executing the abscission, were expressed in the distal part. The accumulation of IAA in the proximal area accelerated the biosynthesis of abscisic acid and ethylene (stimulators of flower separation), which was also reflected at the transcriptional level. Accumulated IAA up-regulated reactive oxygen species (ROS) detoxification mechanisms. Collectively, we provide new information regarding auxin-regulated processes operating in specific areas of the AZ.
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