ArticleAntioxidants (Basel, Switzerland)2022
Drought and UV Radiation Stress Tolerance in Rice Is Improved by Overaccumulation of Non-Enzymatic Antioxidant Flavonoids.
Article in Antioxidants (Basel, Switzerland), 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 47 papers.
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Who cites it
47 citing papers in PubMed, 98 citations in OpenAlex.
- Article
- Plant growth-promoting rhizobacteria (PGPR) producing ACC deaminase and exopolysaccharides enhance salt tolerance in wheat.World journal of microbiology & biotechnology · 2026Article
- The Science of Colour in Rice: A Review on Health Benefits, Genetic Regulation, and Anthocyanin Stability.Rice (New York, N.Y.) · 2026Review
- Article
- Combined transcriptomics and metabolomics analysis reveals the molecular responses of heat tolerance during germination stage in sesame.Frontiers in plant science · 2026Article
- Exploring the molecular landscape of environmental responses in the Antarctic plantFrontiers in plant science · 2026Article
- The responses of rice plant to tricyclazole at the transcriptome and metabolome levels.Frontiers in plant science · 2026Article
- WGCNA reveals dose-dependent responses and molecular regulatory networks of strigolactone-mediated drought mitigation inFrontiers in plant science · 2026Article
- C2H2 Zinc-Finger Transcription Factors Coordinate Hormone-Stress Crosstalk to Shape Expression Bias of the Flavonoid Pathway in Safflower (Current issues in molecular biology · 2025Article
- Article
- Multi-Omics Analysis Reveals the Regulation of Amino Acid Biosynthesis inInternational journal of molecular sciences · 2025Article
- AI-integrated metabolomics maps functional divergence of microbial consortia in field-grown maize.Plant cell reports · 2025Article
- Genome-wide association analysis of winter survival in a diverse Canadian winter wheat population.The plant genome · 2025Article
- Review
- PgF3H gene enhances drought tolerance in transgenic Arabidopsis by regulating flavonoid biosynthesis and stress response.Plant cell reports · 2025Article
- Unlocking Plant Resilience: Metabolomic Insights into Abiotic Stress Tolerance in Crops.Metabolites · 2025Review
- Functional Characterization of GrapevinePlants (Basel, Switzerland) · 2025Article
- Mechanisms of plant acclimation to multiple abiotic stresses.Communications biology · 2025Review
- Article
- Functional Characterization ofInternational journal of molecular sciences · 2025Article
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Authors and funding
10 authors at 5 institutions in 3 countries.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Drought and ultraviolet radiation (UV radiation) are the coexisting environmental factors that negatively affect plant growth and development via oxidative damage. Flavonoids are reactive, scavenging oxygen species (ROS) and UV radiation-absorbing compounds generated under stress conditions. We investigated the biosynthesis of kaempferol and quercetin in wild and flavanone 3-hydroxylase (F3H) overexpresser rice plants when drought and UV radiation stress were imposed individually and together. Phenotypic variation indicated that both kinds of stress highly reduced rice plant growth parameters in wild plants as compared to transgenic plants. When combined, the stressors adversely affected rice plant growth parameters more than when they were imposed individually. Overaccumulation of kaempferol and quercetin in transgenic plants demonstrated that both flavonoids were crucial for enhanced tolerance to such stresses. Oxidative activity assays showed that kaempferol and quercetin overaccumulation with strong non-enzymatic antioxidant activity mitigated the accumulation of ROS under drought and UV radiation stress. Lower contents of salicylic acid (SA) in transgenic plants indicated that flavonoid accumulation reduced stress, which led to the accumulation of low levels of SA. Transcriptional regulation of the dehydrin (DHN) and ultraviolet-B resistance 8 (UVR8) genes showed significant increases in transgenic plants compared to wild plants under stress. Taken together, these results confirm the usefulness of kaempferol and quercetin in enhancing tolerance to both drought and UV radiation stress.
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