西南林业大学学报2025，Vol.45Issue(5)：65-72,8.DOI:10.11929/j.swfu.202405018
外源海藻糖对美国红枫叶片转色的影响
Effect of Exogenous Trehalose on Leaf Color Change of Acer rubrum var.trilobum
摘要
Abstract
To study the effect of spraying exogenous trehalose on the color change of Acer rubrum var.trilobum leaves,one-year-old A.rubrum var.trilobum'freeman maple'potted seedlings were used as experiment-al materials.They were placed in a climate chamber with the leaves being sprayed with trehalose solutions of dif-ferent concentrations at 5,10,20 and 30 mmol/L.The control group was sprayed with clean water.The color para-meters and physiological characteristics of the leaves in the 4 stages of color change,namely the pre-coloring,early,middle,and end stages,were analyzed to explore the key influencing factors.The findings revealed that un-der low-temperature stress,spraying different concentrations of trehalose solution had different degrees of effect on the color change of A.rubrum var.trilobum leaves.There was minor difference among the treatments in pre-coloring stage.As the leaves gradually turned from green to red,the color parameter a* value changed signific-antly in the early,middle and late stages,demonstrating an upward trend.The content of photosynthetic pigments continued to decrease,whereas the contents of soluble sugar,anthocyanin and malondialdehyde increased.The activity of peroxidase and phenylalanine ammonia lyase also increased.Compared with each treatment,10 mmol/L(H2)and 20 mmol/L(H3)exogenous trehalose solutions both increased the pigment content of the leaves,among which H2 solution significantly increased the content of soluble sugar,anthocyanin,and PAL activity,in-dicating its most significant effect.Correlation analysis showed no correlation between peroxidase activity and soluble protein on leaf color parameters,photosynthetic pigments,anthocyanin glycosides,malondialdehyde,and soluble sugars.The main factors affecting the reddening of A.rubrum var.trilobum leaves during its color change period are soluble sugar content,phenylalanine ammonia-lyase activity and anthocyanins.Spraying 10 mmol/L(H2)exogenous trehalose solution could alleviate the damage caused by low-temperature stress on the leaves,promoting the color change with extended coloring period.关键词
美国红枫/海藻糖/外源喷施/叶片转色Key words
Acer rubrum var.trilobum/trehalose/exogenous spraying/leaf color change分类
园艺学与植物营养学引用本文复制引用
董子铭,杨凤军,刘芳,孙欣莹,刘俊彩..外源海藻糖对美国红枫叶片转色的影响[J].西南林业大学学报,2025,45(5):65-72,8.基金项目
大庆石油管理局合作项目(2022-41485)资助 （2022-41485）
黑龙江八一农垦大学学成人才科研启动项目(XDB202113)资助. （XDB202113）
