Research Progress of the Molecular Mechanisms of Light-regulated Plant Seed Germination

doi:10.11926/jtsb.4750

Home > Archive>Volume 32, Issue 2, 2024 >294-300. DOI:10.11926/jtsb.4750

Research Progress of the Molecular Mechanisms of Light-regulated Plant Seed Germination
DOI:
                        10.11926/jtsb.4750
                    
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                        WANG YahanWANG Yahan
South China Botanical Garden, Chinese Academy of Sciences, Guangzhou 510650, China;South China National Botanical Garden, Guangzhou 510650, China;University of Chinese Academy of Sciences, Beijing 100049, China
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LIU XunchengLIU Xuncheng
South China Botanical Garden, Chinese Academy of Sciences, Guangzhou 510650, China;South China National Botanical Garden, Guangzhou 510650, China
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Abstract:

Germination is the key development stage for seed plants entering the agricultural ecosystem. For light-requiring seeds, light is one of the most important environmental signals regulating germination. Red light promotes, whereas far-red light inhibits seed germination. Phytochromes are the major photoreceptors that regulate seed germination. Activated phytochromes promote the degradation of Phytochrome-Interacting-Factor 1 (PIF1), the master repressor of germination, to regulate the expression of genes related to gibberellin and abscisic metabolism and signaling pathways, leading to the initiation of seed germination. Furthermore, a series of epigenetic factors dynamically affect the chromatin structure of germination-related genes and regulate their expression to modulate seed germination process. Here, we summarize the progress, especially the transcriptional and epigenetic mechanisms in light-regulated seed germination, and discuss their applications in agricultural production in future.

Key words:Light signal;Seed germination;Phytochrome;Plant hormone;Transcriptional regulation;Epigenetic

Reference

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王雅寒,刘勋成.光调控植物种子萌发分子机制研究进展[J].热带亚热带植物学报,2024,32(2):294~300

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Received:November 15,2022
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Online: March 22,2024
Published: March 20,2024

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