ArticleAntioxidants (Basel, Switzerland)2022
Exogenous Betaine Enhances the Protrusion Vigor of Rice Seeds under Heat Stress by Regulating Plant Hormone Signal Transduction and Its Interaction Network.
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 9 papers.
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9 citing papers in PubMed, 25 citations in OpenAlex.
- Identification of drought-tolerant mung bean varieties based on germination, antioxidant, and osmolyte profiles.Protoplasma · 2026Article
- Current Status and Future Perspectives of Betaine and Betaine-Based Natural Deep Eutectic Solvents: A Review.Foods (Basel, Switzerland) · 2025Review
- Integrated transcriptomic, metabolomic and lipidomic analyses uncover the crucial roles of lipid metabolism pathways in oat (Avena sativa) responses to heat stress.BMC genomics · 2025Article
- Advances in the Biosynthetic Regulation and Functional Mechanisms of Glycine Betaine for Enhancing Plant Stress Resilience.International journal of molecular sciences · 2025Review
- Investigating how reproductive traits in rice respond to abiotic stress.Journal of experimental botany · 2025Review
- Combined transcriptomics and metabolomics analyses reveal the molecular mechanism of heat tolerance inFrontiers in microbiology · 2025Article
- Comprehensive Transcriptomic and Physiological Insights into the Response of Root Growth Dynamics During the Germination of Diverse Sesame Varieties to Heat Stress.Current issues in molecular biology · 2024Article
- Impact of exogenous rhamnolipids on plant photosynthesis and biochemical parameters under prolonged heat stress.Photosynthetica · 2024Article
- Differences in Physiological Characteristics, Seed Germination, and Seedling Establishment in Response to Salt Stress between Dimorphic Seeds in the HalophytePlants (Basel, Switzerland) · 2023Article
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6 authors at 1 institution in 1 country.
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Abstract
Rice is an important food crop. Rice seedlings are mainly composed of root, coleoptile, mesocotyl and euphylla. The elongation of coleoptile and mesocotyl promotes the emergence of rice seedlings. Therefore, analyzing the mechanism of coleoptile and mesocotyl elongation is important for the cultivation of rice varieties. Due to global warming, heat stress is threatening rice yields. Betaine plays an important role in plant resistance to heat stress; however, we lack research on its regulation mechanism of rice seed germination under heat stress. Therefore, we explored the effects of soaking seeds with betaine at different concentrations on rice seed germination under heat stress. According to the results, soaking seeds with 10 mM of betaine could effectively improve the seeds' germination potential and rate under heat stress to promote the germination of rice seeds. To clarify the mitigation mechanism of betaine in heat stress, we measured the antioxidant enzyme activity, malondialdehyde content, soluble protein content and endogenous hormone content of seed protrusion under heat stress. We constructed the cDNA library for transcriptome sequencing. According to the results, 10 mM of betaine improved the activities of the superoxide dismutase, peroxidase and catalase of seed protrusion under heat stress to reduce the malondialdehyde content and increase the soluble protein content to alleviate the effect of heat stress on rice seed germination. The detection of the endogenous hormone content showed that soaking seeds with 10 mM of betaine increased the content of gibberellin and decreased the contents of auxin and abscisic acid of seed protrusion under heat stress. According to the transcriptome analysis, betaine can induce the expressions of key genes in the biosynthesis and metabolism of auxin, abscisic acid and gibberellins in the seed coleoptile and mesocotyl elongation stage, regulate the signal transduction of three hormones and promote the germination of rice seeds under heat stress. This study revealed, for the first time, the physiological and molecular regulation mechanism of betaine promotion of seed germination under heat stress.
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