ArticleInternational journal of molecular sciences2022
Thidiazuron Promotes Leaf Abscission by Regulating the Crosstalk Complexities between Ethylene, Auxin, and Cytokinin in Cotton.
Article in International journal of molecular sciences, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 16 papers.
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16 citing papers in PubMed, 41 citations in OpenAlex.
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- γ-Valerolactone promotes Solanum lycopersicum seedling growth through transcriptomic and plant hormone changes.Plant molecular biology · 2026Article
- Speed breeding in upland cotton (Frontiers in plant science · 2026Review
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- Abscission zones: cellular interfaces for the programmed separation of organs.Annals of botany · 2025Review
- Genomic Insights intoInternational journal of molecular sciences · 2025Article
- Silencing ofFrontiers in plant science · 2025Article
- Effects of Exocellobiohydrolase CBHA on Fermentation of Tobacco Leaves.Journal of microbiology and biotechnology · 2024Article
- Genomic loci associated with leaf abscission contribute to machine picking and environmental adaptability in upland cotton (Gossypium hirsutum L.).Journal of advanced research · 2024Article
- Thidiazuron combined with cyclanilide modulates hormone pathways and ROS systems in cotton, increasing defoliation at low temperatures.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
- Comparative Physiological and Transcriptomic Mechanisms of Defoliation in Cotton in Response to Thidiazuron versus Ethephon.International journal of molecular sciences · 2023Article
- Beneficial effects of red and blue light on potato leaf antioxidant capacity and tuber bulking.Physiology and molecular biology of plants : an international journal of functional plant biology · 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
- Morphological, Transcriptome, and Hormone Analysis of Dwarfism in Tetraploids ofInternational journal of molecular sciences · 2022Article
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Authors and funding
11 authors at 2 institutions in 1 country.
Funding
Abstract
Thidiazuron (TDZ) is widely used as a defoliant to induce leaf abscission in cotton. However, the underlying molecular mechanism is still unclear. In this study, RNA-seq and enzyme-linked immunosorbent assays (ELISA) were performed to reveal the dynamic transcriptome profiling and the change of endogenous phytohormones upon TDZ treatment in leaf, petiole, and abscission zone (AZ). We found that TDZ induced the gene expression of ethylene biosynthesis and signal, and promoted ethylene accumulation earlier in leaf than that in AZ. While TDZ down-regulated indole-3-acetic acid (IAA) biosynthesis genes mainly in leaf and IAA signal and transport genes. Furthermore, the IAA content reduced more sharply in the leaf than that in AZ to change the auxin gradient for abscission. TDZ suppressed CTK biosynthesis genes and induced CTK metabolic genes to reduce the IPA accumulation for the reduction of ethylene sensitivity. Furthermore, TDZ regulated the gene expression of abscisic acid (ABA) biosynthesis and signal and induced ABA accumulation between 12-48 h, which could up-regulate ABA response factor genes and inhibit IAA transporter genes. Our data suggest that TDZ orchestrates metabolism and signal of ethylene, auxin, and cytokinin, and also the transport of auxin in leaf, petiole, and AZ, to control leaf abscission.
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