福建农林大学学报（自然科学版）2025，Vol.54Issue(3)：392-400,9.DOI:10.13323/j.cnki.j.fafu(nat.sci.).202403051
短期低温胁迫对油茶叶片非结构性碳水化合物的影响
Effect of short-term low temperature stress on non-structural carbohydrates in Camellia oleifera leaves
摘要
Abstract
[Objective]The contents and metabolic mechanism of non-structural carbohydrates(NSC)in Camellia oleifera leaves under low temperature stress were investigated to provided theoretical basis for improving cold resistance and optimizing planting strategy of C.oleifera.[Method]Different low temperature treatments(0 and-5℃,with room temperature as the control)for 6,12,18,and 24 hours were applied on C.oleifera'Changlin 40'for the analyses on phenotype,contents of NSC(namely soluble sugars and starch),as well as activities of sucrose metabolizing enzymes,to analyze the effect of short-term low temperature stress on NSC levels in C.oleifera leaves.[Result]Low temperature stress led to increases in the concentrations of malondialdehyde(MDA)and H2O2 in C.oleifera leaves,and the increasing rates were enhanced with the severity of stress.Low temperature stress re-sulted in lower contents of starch while higher contents of soluble sugar in C.oleifera leaves;at the same time,the activities of su-crose synthase and sucrose phosphate synthase declined compared with the control group;while the activities of acid invetase and neutral invetase went up.[Conclusion]Low temperature stress exerted significant impacts on the contents of NSC in C.oleifera leav-es;the adaptability of C.oleifera to low temperature was achieved by enhancing the activities of acid invetase and neutral invetase,which led to greater contents of soluble sugar(glucose and fructose)and starch level.关键词
短期低温胁迫/油茶/非结构性碳水化合物/糖代谢/蔗糖Key words
short-term low temperature stress/Camellia oleifera/non-structural carbohydrates/sugar metabolism/sucrose分类
农业科技引用本文复制引用
王红润,夏建梅,孙永江..短期低温胁迫对油茶叶片非结构性碳水化合物的影响[J].福建农林大学学报（自然科学版）,2025,54(3):392-400,9.基金项目
国家自然科学基金项目(32001348). （32001348）
