农业环境科学学报2025，Vol.44Issue(5)：1217-1224,8.DOI:10.11654/jaes.2024-0406
叶面喷施L-半胱氨酸对小白菜镉积累及抗氧化系统的影响
Effects of leaf spraying L-cysteine on cadmium accumulation and antioxidant system of Chinese cabbage
摘要
Abstract
In order to explore the effect of amino acids on cadmium(Cd)enrichment and the relationship with antioxidant system of Chinese cabbage,this study employed different concentrations of L-cysteine solution to spray the leaf surface of Chinese cabbage in the mild Cd contaminated soil.The content of Cd and the index of antioxidant system of Chinese cabbage were measured.The results showed that the content of Cd in aboveground part of Chinese cabbage decreased after spraying L-cysteine(P＜0.05).When the spray concentration was 20 mmol·L-1 and 30 mmol·L-1,the transfer of Cd from the root to the aboveground part was significantly reduced(P＜0.05).The effect of spraying time on Cd content was significant(P＜0.05).When L-cysteine concentration of 30 mmol·L-1 was sprayed in three leaf single-phase(TCM),the lowest value of Cd content in aboveground of Chinese cabbage were found,decreased by 63.67％.The transport coefficient was the lowest at this condition.In addition,with the increase of L-cysteine concentration,chlorophyll content of Chinese cabbage increased.After spraying L-cysteine,POD activity was increased,and SOD activity was decreased(P＜0.05).Spraying with 30 mmol·L-1 concentration of L-cysteine can increase the content of MDA and GSH in Chinese cabbage.The study showed that spraying L-cysteine increased the chlorophyll and antioxidant system activity of Chinese cabbage;improved the intercepting ability of Chinese cabbage to Cd,reduced the transfer of Cd from underground to aboveground,and alleviated the stress of Cd on Chinese cabbage.关键词
叶面喷施/L-半胱氨酸/镉积累/小白菜/转运Key words
foliar spraying/L-cysteine/cadmium accumulation/Chinese cabbage/transport分类
农业科技引用本文复制引用
林星妤,郭小可,扈茹静,徐小逊,杨占彪..叶面喷施L-半胱氨酸对小白菜镉积累及抗氧化系统的影响[J].农业环境科学学报,2025,44(5):1217-1224,8.基金项目
四川省自然科学基金项目(2023NSFSC0199) （2023NSFSC0199）
四川省科技计划项目(2023YFS0483) （2023YFS0483）
国家现代农业产业技术体系四川油菜创新团队项目(SCCXTD-2024-3)Natural Science Foundation of Sichuan Province,China(2023NSFSC0199) （SCCXTD-2024-3）
Sichuan Science and Technology Program(2023YFS0483) （2023YFS0483）
Sichuan Rapeseed Innovation Team of National Modern Agricultural Industry Technology System(SCCXTD-2024-3) （SCCXTD-2024-3）
