饲料研究2024，Vol.47Issue(20)：104-109,6.DOI:10.13557/j.cnki.issn1002-2813.2024.20.019
钼与聚苯乙烯微塑料对紫花苜蓿幼苗生长和抗氧化能力的影响
Effects of molybdenum and polystyrene microplastics on growth and antioxidant capacity of alfalfa seedlings
摘要
Abstract
The experiment aimed to investigate the effects of single and combined stress of heavy metal molybdenum(Mo)and polystyrene microplastics(PS-MPs)on the growth and antioxidant capacity of alfalfa seedlings.Alfalfa was used as the research subject,and the effects of different concentrations of Mo(0,0.1,1.0,10.0,50.0,100.0 mg/L)and PS-MPs(0,5,10,20,50,100 mg/L)on the growth and antioxidant indicators of alfalfa seedlings were detected.The results showed that under single Mo stress,low concentrations of Mo(0.1,1.0 mg/L)promoted the synthesis of chlorophyll,and the content of chlorophyll A,chlorophyll B,and total chlorophyll increased.High concentrations of Mo(50 mg/L)inhibited the growth indicators,chlorophyll content,and antioxidant enzyme activity of alfalfa,and increased the content of malondialdehyde(MDA).Under single PS-MPs stress,the growth indicators and chlorophyll content of alfalfa seedlings in the PS20 group were lower than those in the PS0 group,and the MDA content was higher than other groups.The antioxidant enzyme activity in the PS100 group was inhibited.Under combined stress,the activities of catalase(CAT),peroxidase(POD),superoxide dismutase(SOD),and the content MDA in the Mo-PS5 group of alfalfa were significantly lower than that in the Mo-PS0 group.Compared with the Mo-PS0 group,the growth indicators of alfalfa in the Mo-PS20 group were all reduced,and the MDA content was the highest,and the antioxidant enzyme activity in the Mo-PS100 group was significantly reduced(P＜0.05).The study showed that both single stress of Mo and PS-MPs,as well as their combined stress,could inhibit the growth of alfalfa seedlings.Under combined stress,low concentrations of PS-MPs could alleviate the oxidative damage caused by Mo stress,while high concentrations of PS-MPs would exacerbate the growth inhibition and oxidative damage caused by Mo stress.关键词
紫花苜蓿/生长/抗氧化能力/聚苯乙烯微塑料/钼Key words
alfalfa/growth/antioxidant capacity/polystyrene microplastics/molybdenum分类
农业科技引用本文复制引用
朱若琳,朱文琰,杨怡欣,王贝贝,孙平..钼与聚苯乙烯微塑料对紫花苜蓿幼苗生长和抗氧化能力的影响[J].饲料研究,2024,47(20):104-109,6.基金项目
省部共建三江源生态与高原农牧业国家重点实验室开放研究项目(项目编号:2022-KF-10) （项目编号:2022-KF-10）
青海省重点研发与转化计划项目(项目编号:219-NK-173) （项目编号:219-NK-173）
