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Reliable Method for Assessing Seed Germination, Dormancy, and Mortality under Field Conditions
Published on: November 6, 2016
Metabolo-Transcriptomic Analysis Reveals the Mechanisms Underlying Seed Dormancy Release in Polygonatum sibiricum
Xiaoyu Su1,2, Chunming Li1,2, Lei Li1,2
1Institute of Chinese Herbal Medicines, Henan Academy of Agricultural Sciences, Zhengzhou 450002, China.
International Journal of Molecular Sciences
|August 13, 2026
Summary
Seed dormancy in Polygonatum sibiricum is broken by hormonal changes and metabolic shifts. Integrated transcriptomic and metabolomic analyses reveal key gene regulations for improved seed germination.
Area of Science:
- Plant Biology
- Molecular Biology
- Biochemistry
Background:
- Seed dormancy in Polygonatum sibiricum presents cultivation challenges.
- Understanding dormancy release mechanisms is crucial for this medicinal plant.
Purpose of the Study:
- To elucidate the regulatory mechanisms of dormancy release in Polygonatum sibiricum seeds.
- To investigate the interplay of hormonal and metabolic changes during germination.
Main Methods:
- Integrated transcriptomic and metabolomic analyses were performed on seeds at 0, 5, 10, and 15 days post-imbibition.
- Physiological assays, KEGG enrichment, and co-expression network analysis were utilized.
Main Results:
- Abscisic acid (ABA) and starch decreased, while gibberellin (GA) and soluble sugars increased, indicating metabolic shifts.
- Upregulation of GA biosynthesis (GA3ox) and downregulation of DELLA repressors suggested relieved GA signaling.
- Differential expression of ABA pathway genes (CYP707A, PYL, PP2C, SnRK2) and transcription factors (GRAS family) were observed.
- Key pathways identified include starch/sucrose metabolism and plant hormone signal transduction.
Conclusions:
- Dormancy release in P. sibiricum is regulated by coordinated hormonal reprogramming, metabolic mobilization, and transcription factor activity.
- Findings provide a theoretical basis for enhancing seed germination in this medicinal species.
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