沈阳农业大学学报2025，Vol.56Issue(3)：76-84,9.DOI:10.3969/j.issn.1000-1700.2025.03.008
生境变化对小叶章表型与表观遗传修饰的影响
Habitat-induced Phenotypic and Epigenetic Variations in Calamagrostis angustifolia
摘要
Abstract
[Objective]To reveal the adaptation mechanism of wetland plants to hydrological gradients and their epigenetic regulation characteristics.[Methods]Using Calamagrostis angustifolia,a dominant species in Sanjiang Plain wetlands,as the research object,we compared phenotypic variations and DNA methylation levels at key phenological stages(jointing,heading,and maturity)in three habitats(typical meadow,transplanted from meadow to swamp for 4 years,and swamp).[Results]C.angustifolia in typical meadow habitat showed growth advantages,with plant height,leaf length,and aboveground biomass at maturity being 26.45%,18.67%,and 34.83%higher than the transplanted treatment,and 12.74%,36.91%,and 63.51%higher than the swamp habitat,respectively.Phenotypic trait correlations were strongest at heading stage.DNA methylation levels showed significant differences among habitats and developmental stages,with full methylation levels in typical meadow and swamp habitats being significantly higher than the transplanted treatment at maturity.Epigenetic variations mainly existed within habitats(62%-81%)and showed developmental stage specificity,with full methylation sites showing significant positive correlations with growth traits at maturity.[Conclusion]C.angustifolia adapts to different hydrological habitats through phenotypic trait regulation,with plant height,leaf length,and biomass being higher in typical meadow than in swamp habitat.Both hemi-methylation and full methylation sites participate in phenotypic differentiation through regulating traits(leaf length,leaf width,internode length)and biomass.关键词
表型可塑性/DNA甲基化/表观遗传Key words
phenotypic plasticity/DNA methylation/epigenetics分类
生物学引用本文复制引用
张玉,钟海秀,王继丰,曹宏杰,徐明怡,梁佳文,杨轶华..生境变化对小叶章表型与表观遗传修饰的影响[J].沈阳农业大学学报,2025,56(3):76-84,9.基金项目
黑龙江省省属科研院所科研业务费项目(ZNQN2023ZR02) （ZNQN2023ZR02）
黑龙江省省属科研院所科研业务费项目(CZBZ2024ZR003) （CZBZ2024ZR003）
黑龙江省科学院院长基金项目(YZ2023ZR01) （YZ2023ZR01）
黑龙江省科学院创新基金项目(QNCX2024ZR02) （QNCX2024ZR02）
