农业环境科学学报2025，Vol.44Issue(4)：909-918,10.DOI:10.11654/jaes.2024-0290
不同外源物质对镉污染下钻叶紫菀生长、生理和镉积累的影响
Effects of different exogenous substances on the growth,physiology,and Cd accumulation in Aster subulatus Michx.grown under Cd contamination
摘要
Abstract
In order to improve the phytoremediation efficiency of the Aster subulatus Michx.(A.subulatus),a Cd-hyperaccumulator,the effects of four exogenous substances on the growth,Cd accumulation and antioxidant system of A.subulatus was studied.In this study,the effects of biomass,Cd content,Cd accumulation,and the antioxidant system were analyzed in the application of glucosidine diphosphate(UDPG)and methyl jasmonate(MeJA),spermidine(SPD),and abscisic acid(ABA)on A.subulatus under sand culture condition with 30 mg·L-1 Cd.Compared with Cd treatment alone,application of ABA and UDPG significantly increased biomass and aboveground Cd accumulation.After application of 0.1 mg·L-1 ABA,aboveground dry weight and Cd accumulation increased by 107.1％and 152.2％,respectively;after application of 0.1 mg·L-1 UDPG,aboveground dry weight and Cd accumulation increased by 72.3％and 87.4％,respectively.Treatment of SPD increased the aboveground Cd content and the high concentration treatment alleviated the adverse effects of Cd on the growth of A.subulatus.MeJA treatment significantly inhibited the accumulation of Cd in A.subulatus.Treatment with 0.4 mg·L-1 MeJA and 5 mg·L-1 SPD significantly reduced the MDA content of A.subulatus leaves by 21.6％and 25.0％,respectively.Treatment with UDPG and 0.1 mg·L-1 ABA significantly increased the content of GSH and the activities of SOD and APX.In conclusion,exogenous application of appropriate concentrations of ABA and UDPG effectively alleviated the growth inhibition of Cd on A.subulatus,increased plant biomass and Cd accumulation,and improved the tolerance of A.subulatus to Cd.关键词
Cd积累量/钻叶紫菀/植物修复/外源物质Key words
Cd accumulation/A.subulatus/phytoremediation/exogenous substances分类
环境科学引用本文复制引用
梁雪莲,陈伟,王天顺,邢钇浩,陆玮璠,廖洁,唐莉,王海军,蒋文艳..不同外源物质对镉污染下钻叶紫菀生长、生理和镉积累的影响[J].农业环境科学学报,2025,44(4):909-918,10.基金项目
广西自然科学基金项目(2021GXNSFBA196028、2024GXNSFAA010469) （2021GXNSFBA196028、2024GXNSFAA010469）
广西农业科学院科技发展基金项目(桂农科2021YT137,桂农科2023YM118) （桂农科2021YT137,桂农科2023YM118）
科技先锋队"强农富民""六个一"专项行动(桂农科盟202516)Natural Science Foundation of Guangxi Province,China(2021GXNSFBA196028,2024GXNSFAA010469) （桂农科盟202516）
Special Project for Basic Scientific Research of Guangxi Academy of Agricultural Sciences(GXAAS2021YT137,GXAAS2023YM118) （GXAAS2021YT137,GXAAS2023YM118）
Guangxi Agricultural Science and Technology Union Projects(No.202516) （No.202516）
