Stimulation versus inhibition: The effect of microplastics on pak choi growth

微塑料 超氧化物歧化酶 过氧化氢酶 干重 动物科学 化学 抗氧化剂 氧化应激 生物 食品科学 植物 生物化学 环境化学
作者
Yufei Yu,Jia Li,Yang Song,Zhengyan Zhang,Songguo Yu,Meiling Xu,Yangyang Zhao
出处
期刊:Applied Soil Ecology [Elsevier BV]
卷期号:177: 104505-104505 被引量:46
标识
DOI:10.1016/j.apsoil.2022.104505
摘要

As an exogenous pollutant, microplastics in soils may affect plant performance. In this study, pot experiments were conducted to evaluate the effects of various concentrations of polyethylene (PE) and polypropylene (PP) with different particle sizes on pak choi (Brassica rapa L. ssp. chinensis) growth. Morphological and physiological indicators of pak choi, and soil properties were measured. The toxic effects of microplastics on pak choi growth varied among the plastic type, concentration, and particle size. The effect of PE on pak choi fresh weight was negligible. However, the inhibition rate of 5% (w/w) PE on the total protein (TP) content reached 84.6% (p < 0.01). PP microplastics, especially those with small particle sizes, significantly reduced the fresh weight, leaf number, and TP content of pak choi. PE and PP had no significant impacts on the photosynthetic pigments in pak choi leaves. Pak choi root activity decreased by 6.7%–14.4% after exposure to PP, suggesting mechanical damage may have occurred. Conversely, Pak choi root activity increased by 13.5%–85.5% after exposure to PE. This may improve pak choi growth, thereby counteracting the negative effects of PE exposure. The activities of superoxide dismutase and peroxidase were lower after exposure to PP with a small particle size than the control. A plausible explanation is that the production of reactive oxygen species under PP stress exceeds pak choi tolerance, thereby inhibiting the expression of antioxidant enzymes. In contrast, pak choi resisted the oxidative stress caused by 5% (w/w) PE by improving the activities of antioxidant enzymes. Furthermore, PP and PE may indirectly inhibit the growth of pak choi by reducing soil aeration. These findings provide basic information for evaluating the phytotoxicity of microplastics in soil-vegetable systems.
最长约 10秒,即可获得该文献文件

科研通智能强力驱动
Strongly Powered by AbleSci AI
更新
PDF的下载单位、IP信息已删除 (2025-6-4)

科研通是完全免费的文献互助平台,具备全网最快的应助速度,最高的求助完成率。 对每一个文献求助,科研通都将尽心尽力,给求助人一个满意的交代。
实时播报
Keyl发布了新的文献求助10
刚刚
张甜完成签到,获得积分10
刚刚
YamDaamCaa应助闲听松风眠采纳,获得30
1秒前
狂野世立发布了新的文献求助10
1秒前
2秒前
陈什么烨发布了新的文献求助10
3秒前
3秒前
4秒前
情怀应助嘉嘉琦采纳,获得10
4秒前
Ava应助WSGQT采纳,获得10
5秒前
Jiang发布了新的文献求助10
6秒前
超帅听枫完成签到,获得积分20
6秒前
SYLH应助poli采纳,获得10
7秒前
生菜完成签到,获得积分10
7秒前
bxxxxx应助FFF采纳,获得30
7秒前
senhoo完成签到,获得积分10
8秒前
8秒前
JamesPei应助Ana采纳,获得10
8秒前
superbada发布了新的文献求助30
8秒前
希望天下0贩的0应助雪碧采纳,获得10
11秒前
爆米花应助科研通管家采纳,获得10
12秒前
坦率的匪应助科研通管家采纳,获得10
12秒前
12秒前
隐形曼青应助科研通管家采纳,获得10
12秒前
pcr163应助科研通管家采纳,获得80
12秒前
大模型应助科研通管家采纳,获得30
12秒前
Jasper应助科研通管家采纳,获得10
12秒前
大个应助科研通管家采纳,获得10
12秒前
科研通AI5应助舒服的乐曲采纳,获得10
12秒前
传奇3应助科研通管家采纳,获得10
12秒前
坦率的匪应助科研通管家采纳,获得10
12秒前
汉堡包应助科研通管家采纳,获得10
12秒前
12秒前
坦率的匪应助科研通管家采纳,获得10
12秒前
12秒前
quhayley应助科研通管家采纳,获得10
12秒前
要减肥岩应助科研通管家采纳,获得10
13秒前
彭于彦祖应助培爷采纳,获得30
13秒前
Mininine完成签到,获得积分10
13秒前
13秒前
高分求助中
A new approach to the extrapolation of accelerated life test data 1000
ACSM’s Guidelines for Exercise Testing and Prescription, 12th edition 500
‘Unruly’ Children: Historical Fieldnotes and Learning Morality in a Taiwan Village (New Departures in Anthropology) 400
Indomethacinのヒトにおける経皮吸収 400
Phylogenetic study of the order Polydesmida (Myriapoda: Diplopoda) 370
基于可调谐半导体激光吸收光谱技术泄漏气体检测系统的研究 350
Robot-supported joining of reinforcement textiles with one-sided sewing heads 320
热门求助领域 (近24小时)
化学 材料科学 医学 生物 工程类 有机化学 生物化学 物理 内科学 纳米技术 计算机科学 化学工程 复合材料 遗传学 基因 物理化学 催化作用 冶金 细胞生物学 免疫学
热门帖子
关注 科研通微信公众号,转发送积分 3988732
求助须知:如何正确求助?哪些是违规求助? 3531027
关于积分的说明 11252281
捐赠科研通 3269732
什么是DOI,文献DOI怎么找? 1804764
邀请新用户注册赠送积分活动 881869
科研通“疑难数据库(出版商)”最低求助积分说明 809021