林业科学研究2026，Vol.39Issue(4)：162-169,8.DOI:10.12403/j.1001-1498.20250328
盐雾胁迫对文冠果叶片黄酮含量及生理结构的影响
Effects of Salt Spray Stress on Leaf Flavonoid Content and Physiological Structure in Xanthoceras sorbifolium Bunge
摘要
Abstract
[Objective]This study aimed to analyze the physiological responses and variation patterns of flavonoids in Xanthoceras sorbifolium Bunge leaves under salt spray stress,so as to provide a theoretical basis for exploring the salt resistance mechanism of Xanthoceras sorbifolium Bunge.[Methods]Based on two-year-old Xanthoceras sorbifolium Bunge seedlings,saturated NaCl solution was sprayed at 0 d,2 d,and 4 d.The growth status of seedlings and leaf stomata were observed;physiological indicators related to salt stress(including SOD activity,MDA content,soluble sugar content,and proline content)and the con-tent changes of flavonoid components(quercetin,kaempferol,luteolin,gallocatechin,epicatechin gallate,and epigallocatechin)in leaves were determined.[Results]Salt spray stress reduced the stomatal con-ductance of Xanthoceras sorbifolium Bunge leaves.Compared with the control,SOD activity,MDA con-tent,soluble sugar content,and proline content increased significantly,and showed an overall upward trend with prolonged stress duration.However,the increase rate of these physiological indices during the mild stress stage(0～2 d)was significantly higher than that during the severe stress stage(2～4 d).The contents of individual flavonoid components and total flavonoids in leaves initially decreased and then in-creased with increasing stress duration.Furthermore,total flavonoid content was positively correlated with kaempferol,epicatechin gallate,and epigallocatechin.[Conclusion]Xanthoceras sorbifolium Bunge leaves adapt to salt spray stress through physiological responses such as increasing SOD activity,MDA content,soluble sugar content,and proline content,and reduced stomatal conductance.The synergistic changes between physiological indicators and flavonoid contents are involved in the stress response process.These findings provide a scientific basis for exploring the salt resistance mechanism of Xanthoceras sorbi-folium Bunge and breeding germplasm with high flavonoid content.关键词
文冠果/盐雾胁迫/黄酮类化合物/SOD/MDA/可溶性糖/气孔Key words
Xanthoceras sorbifolium Bunge/salt stress/flavonoids/SOD/MDA/soluble sugar/stomata分类
农业科技引用本文复制引用
崔灿,安博雅,贾宇婷,丁健,阮成江,李景滨,黄瑜,张岩,吕庆鑫..盐雾胁迫对文冠果叶片黄酮含量及生理结构的影响[J].林业科学研究,2026,39(4):162-169,8.基金项目
辽宁省"兴辽英才计划"项目(XLYC2203001) （XLYC2203001）
国家重点研发计划子课题(2023YFD2200304-03) （2023YFD2200304-03）
辽宁省科技计划联合计划(基金)项目(2023JH2/101700242) （基金）
大连市科技创新基金国际合作项目(2024JJ12RC038) （2024JJ12RC038）
中央高校基本科研业务费项目(044420250077、0919140114). （044420250077、0919140114）
