干旱地区农业研究2025，Vol.43Issue(6)：47-56,10.DOI:10.7606/j.issn.1000-7601.2025.06.05
黑果枸杞对风沙胁迫的生理响应特征分析
Analysis of physiological response characteristics of Lycium ruthenicum to wind-sand stress
摘要
Abstract
In order to explore the physiological response characteristics of Lycium ruthenicum to wind-sand stress,L.ruthenicum seedlings from Qingtu Lake Area,Minqin,Gansu Province,were selected for the study.The stress of clean wind and wind-sand flow was simulated in the wind tunnel laboratory,and the photosynthetic physio-logical indicators,antioxidant enzyme activities,contents of osmotic regulatory substances,degree of membrane lip-id peroxidation,and leaf stomatal indicators were determined.The results showed that under clean air stress,Pn,Gs,Ci,and Tr reach their peaks at 12 m·s-1,which are 38.3 μmol·m-2·s-1,0.48 mol·m-2·s-1,8.01 μmol·mol-1 and 8.2 mmol·m-2·s-1,respectively.The SOD activity reached a peak of 42.3 U·g-1 at 5 m·s-1,and the POD activity reached a peak of 39.6 U·g-1·min-1 at 15 m·s-1.The CAT activity reached a peak of 9.1 U·g-1·min-1 at 12 m·s-1 under clean air stress,the proline content reached a peak of 207 μg·g-1 at 12 m·s-1 under clean air stress,and the MDA content reached a peak of 7.6 nmol·g-1 at 12 m·s-1 under clean air stress.The stomatal density of the upper epidermis reached a peak of 5 216 PCS·mm-2 at 5 m·s-1,and that of the lower epidermis reached a peak of 3 368 PCS·mm-2 at 12 m·s-1.Under the stress of wind-sand flow,Pn,Gs,Ci,and Tr increased with the increase of stress time and reached the peak at 24 minutes.They were 19.1 μmol·m-2·s-1,0.95 mol·m-2·s-1,16.3 μmol·mol-1,and 17.7 mmol·m-2·s-1,respectively.The SOD activity reached a peak of 36.2 U·g-1 at 8 min.The POD activity reached a peak of 65.6 U·g-1·min-1 at 12 m·s-1.The CAT ac-tivity reached the peak of 10.8 U·g-1·min-1 at 8 min.The proline content reached a peak of 231 μg·g-1 at 16 min.The content of soluble sugar reached a peak of 8.0 mg·g-1 at 12 m·s-1.The MDA content reached a peak of 9.4 nmol·g-1 at 8 m·s-1.The stomatal density of the upper epidermis reached a peak of 3 986 PCS·mm-2 at 5 m·s-1,and that of the lower epidermis reached a peak of 4 581 PCS·mm-2 at 12 m·s-1.The research results showed that the physiological response characteristics of L.ruthenicum to wind-sand stress are significantly depend-ent on wind speed and stress time.Plants adapt to wind-sand stress of different intensities and durations by dynami-cally regulating physiological processes such as photosynthetic physiology,antioxidant enzyme activity,osmotic reg-ulatory substance content,and stomatal indicators.关键词
黑果枸杞/风沙胁迫/光合生理/抗氧化酶/相对含水量/西北地区Key words
Lycium ruthenicum/wind-sand stress/photosynthetic physiology/antioxidant enzyme/relative water content/northwest region分类
农业科技引用本文复制引用
HAN Dongchen,CHEN Wei,NIU Xinyue..黑果枸杞对风沙胁迫的生理响应特征分析[J].干旱地区农业研究,2025,43(6):47-56,10.基金项目
国家自然科学基金项目(31701949) （31701949）
山西省中央引导发展专项(YDZJSX20231A052) （YDZJSX20231A052）
山西省教育科学"十四五"规划资助项目(GH-221031) （GH-221031）
