摘要
通过人工遮荫方法,研究了不同光强(100%、40%、10%透光率)对香果树叶片可溶性糖、淀粉及非结构性碳水化合物(NSC)含量以及相关代谢酶活性的影响。结果表明:40%透光率条件下,香果树叶片中的可溶性糖、淀粉浓度、NSC含量以及可溶性糖/淀粉比值均达到最大值;1,5-二磷酸核酮糖羧化酶/加氧酶、磷酸烯醇式丙酮酸羧化酶、蔗糖合成酶和蔗糖磷酸合成酶的活性也均达到最大值。酸性转化酶活性随光强减弱而升高,而可溶性淀粉合成酶和淀粉酶活性则随着光强减弱而降低。综上,40%透光率最有利于香果树叶片中可溶性糖、淀粉及NSC的积累。
Artificial shading treatments were applied to examine the effects of different light intensities(100%,40%and 10%light transmittance)on the concentrations of soluble sugar,starch and non-structural carbohydrate(NSC)and their related metabolic enzyme activities in the leaves of Emmenopterys henryi Oliv.(E.henryi).Results showed that under 40%light transmittance,the concentrations of soluble sugars,starch,and NSC,along with the soluble sugar-to-starch ratio all reached the maximum values;meanwhile,the activities of ribulose-1,5-bisphosphate carboxylase/oxygenase,phosphoenolpyruvate carboxylase,sucrose synthase,and sucrose phosphate synthase were the highest.Acid invertase activity exhibited a progressive increase with diminishing light intensity,while soluble starch synthase and amylase activities declined progressively under reduced light intensity.These results demonstrate that 40%light transmittance optimizes the accumulation of soluble sugars,starch,and non-structural carbohydrates(NSC)in the leaves of E.henryi.
作者
罗瑞莉
刘文娜
景雨
宋丽莉
LUO Ruili;LIU Wenna;JING Yu;SONG Lili(School of Ecological Technology and Engineering,Shanghai Institute of Technology,Shanghai 201418,China)
出处
《应用技术学报》
2025年第3期348-352,370,共6页
Journal of Technology
基金
国家自然科学基金项目(32270393)资助。
