[1]孟令秦,沈哲源,王宁,等.微塑料和锂离子交互作用对小麦生长特性与抗氧化系统的影响[J].江苏农业学报,2026,42(06):1081-1091.[doi:doi:10.3969/j.issn.1000-4440.2026.06.001]
　MENG Lingqin,SHEN Zheyuan,WANG Ning,et al.Impact of the interaction between microplastics and lithium ions on the growth traits and antioxidant system of Triticum aestivum L.[J].,2026,42(06):1081-1091.[doi:doi:10.3969/j.issn.1000-4440.2026.06.001]
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微塑料和锂离子交互作用对小麦生长特性与抗氧化系统的影响()

江苏农业学报[ISSN:1006-6977/CN:61-1281/TN]

卷:
42
期数:
2026年06期
页码:
1081-1091
栏目:
微塑料的环境效应和健康影响专题
出版日期:
2026-06-30

文章信息/Info

Title:
Impact of the interaction between microplastics and lithium ions on the growth traits and antioxidant system of Triticum aestivum L.
作者:
孟令秦; 沈哲源; 王宁; 田明珠; 马彩潆; 张亮; 范尧; 王寿景; 周学
(南京师范大学泰州学院化学与生物工程学院,江苏泰州225300)
Author(s):
MENG Lingqin; SHEN Zheyuan; WANG Ning; TIAN Mingzhu; MA Caiying; ZHANG Liang; FAN Yao; WANG Shoujing; ZHOU Xue
(School of Chemistry and Biological Engineering, Nanjing Normal University Taizhou College, Taizhou 225300, China)
关键词:
微塑料; 锂; 小麦; 复合作用; 生态毒性效应; 土壤理化性质
Keywords:
microplastics; lithium; wheat; compound action; ecotoxicological effects; soil physical and chemical properties
分类号:
S512.1
DOI:
doi:10.3969/j.issn.1000-4440.2026.06.001
文献标志码:
A
摘要:
本研究以小麦(Triticum aestivum L.)(济麦22)为供试作物,探究聚乙烯微塑料(PE)(20 g/kg)和聚己二酸-对苯二甲酸丁二酯微塑料(PBAT)(20 g/kg)与锂（Li）(60 mg/kg)单一处理及复合处理对小麦生长和抗氧化系统的影响。结果表明,2%PE处理增加了小麦生物量,2%PBAT处理显著抑制根茎发育,两者都降低植物叶绿素总含量,增加类胡萝卜素含量;Li+处理促进叶片生长,显著提高过氧化氢酶(CAT)活性,但抑制叶绿素合成和根系生长,并抑制根部超氧化物歧化酶（SOD）活性。复合处理中,2%PE+Li+与2%PBAT+Li+都加剧了叶片生长抑制和增加过氧化物酶(POD)和CAT的活性。其中PBAT+Li+导致植株鲜重、干重和叶绿素含量降低最明显。另外,复合处理显著抑制小麦对Li+的吸收转运,2%PBAT的抑制作用强于2%PE。土壤理化性质分析结果显示,2%PE可缓解Li+对有效磷的抑制,而2%PBAT与Li+协同使有效钾含量增加,复合处理均显著促进土壤蔗糖酶和脲酶活性提高。相关性分析结果表明抗氧化系统与生长指标呈正相关,表明植物通过调控抗氧化防御响应污染胁迫。总体而言,可降解的PBAT较PE具有更高的生态风险,Li+进一步加剧了PBAT的生态毒性,这可能是由于PBAT与Li+之间的相互作用与PE存在差异,从而诱导植物-土壤系统产生不同的响应机制。
Abstract:
This study used Triticum aestivum L. (Jimai 22) as the test plant to investigate the effects of single and combined exposure to polyethylene microplastics (PE) (20 g/kg) and polybutylene adipate-terephthalate microplastics (PBAT) (20 g/kg) with lithium (Li) (60 mg/kg) on the growth and antioxidant system of wheat. The results showed that 2%PE increased biomass, while 2%PBAT significantly inhibited root and stem development, both treatments decreased the total chlorophyll content of the plant and increased carotenoid content. Li+ promoted the growth of the leaves, significantly increased catalase (CAT) activity, but inhibited chlorophyll synthesis and root growth, as well as inhibited superoxide dismutase (SOD) activity in the roots. In the combined treatments, both 2% PE+Li+ and 2% PBAT+Li+ exacerbated the growth inhibition of the leaves and increased the activities of peroxidase (POD) and CAT. Among them, the PBAT+Li+ group caused the most significant decrease in fresh and dry weight and chlorophyll content of the plants. In addition, combined treatments significantly inhibited the absorption and transport of Li+ in wheat (2% PBAT>2% PE). Soil physicochemical analysis showed that 2% PE could alleviate the inhibition of Li+ on available phosphorus, while 2% PBAT and Li+ synergistically increased the available potassium content. Combined treatments significantly promoted soil invertase and urease activities. Correlation analysis revealed a positive association between the antioxidant system and growth indicators, indicating that plants respond to pollution stress by regulating antioxidant defense. Overall, degradable PBAT has higher ecological risks than PE, and Li+ further exacerbates the ecological toxicity of PBAT, which may be due to the differences in the interaction between PBAT and Li+ compared to PE, inducing different response mechanisms in the plant-soil system.

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备注/Memo

备注/Memo:
收稿日期：2025-05-30基金项目：江苏省自然科学基金项目(BK202111128);2025年江苏高校“青蓝工程”优秀青年骨干教师培养对象和泰州市“凤城英才计划”第六期“311高层次人才培养专项”作者简介：孟令秦(2004-),男,山东淄博人，本科,研究方向为微塑料的生态效应。(E-mail)16220251@nnutc.edu.cn通讯作者：张亮,(E-mail)liangzai0061@126.com
更新日期/Last Update: 2026-07-15