江西农业学报2026，Vol.38Issue(9)：39-45,53,8.DOI:10.19386/j.cnki.jxnyxb.2026.09.006
施用海藻糖对低温胁迫下草莓生理生化指标的影响
Effects of Trehalose Application on Physiological and Biochemical Indicators of Strawberry under Low-temperature Stress
摘要
Abstract
To investigate the effects of exogenous trehalose on strawberries under low-temperature stress,'Benihoppe'str-awberry was used as the experimental material in this study.With plants grown at room temperature(25℃)serving as the cont-rol,plants in a low-temperature environment(4℃)were treated with different concentrations of trehalose(0,5,10 and 20 mg/L).Relevant physiological indicators were measured,including maximum photochemical efficiency of photosystem Ⅱ(Fv/Fm),chlorophyll content,reactive oxygen species(ROS)and malondialdehyde(MDA)levels,antioxidant enzyme activity(SOD,POD,CAT and APX),and osmoregulatory substance content.The results showed that low-temperature stress significantly inhibited photosynthesis in strawberry leaves and increased the accumulation of ROS content.The application of trehalose at certain concentrations effectively alleviated the effects of low-temperature stress,with the 10 mg/L treatment yielding the best overall results.Following treatment at this concentration,the Fv/Fm value of strawberry leaves increased by 20.03%compared to the low-temperature control group,and total chlorophyll content increased by 56.12%;SOD,POD,CAT and APX enzyme activities increased by 30.59%,120.26%,154.58%and 62.50%,respectively;H2O2,·O2-and MDA levels decreased significantly;soluble sugar,soluble protein and endogenous trehalose content increased by 56.09%,39.97%and 44.26%,respectively.Furthermore,correlation analysis indicated that the effect of trehalose treatment on strawberry tolerance to low-temperature stress was not significantly related to protein content.In summary,exogenous application of 10 mg/L trehalose can alleviate the adverse effects of low-temperature stress on strawberry leaves by enhancing photosynthetic efficiency,increasing antioxidant enzyme activity,and regulating the accumulation of osmotic substances.关键词
外源海藻糖/草莓/低温胁迫/缓解Key words
Exogenous trehalose/Strawberry/Low-temperature stress/Alleviating分类
农业科技引用本文复制引用
袁舟宇,胡新龙,李小飞,吴庭观,徐超..施用海藻糖对低温胁迫下草莓生理生化指标的影响[J].江西农业学报,2026,38(9):39-45,53,8.基金项目
国家自然科学基金项目"低温寡照对设施草莓成花的影响机理及其评估模型构建"(32360443). （32360443）
