Micro- and nano-plastics in hydroponic environment are critical for plants: A meta-analysis

Q2 Agricultural and Biological Sciences
Shi-peng Li, Yu-Xi Feng, Xiao-Zhang Yu
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引用次数: 0

Abstract

The presence of microplastics (MPs) and nanoplastics (NPs) in the environment is ubiquitous, and as such, the toxicity of these plastics, exposure scenarios, and mechanisms of plant response is to be determined. Hereby, a meta-analysis is performed to investigate the effects of MPs and/or NPs on different plant species under hydroponics and soil conditions to assess the current scenario. We examined the response level of root system, photosynthetic parameters, and antioxidant system of plants against MPs/NPs. Root response level in soil condition against various concentrations and types of MPs was higher than in hydroponics however, this response was opposite for the types of MPs. Photosynthetic parameters, including chlorophyll a and b, carotenoids, total chlorophyll, and maximum quantum efficiency of PSII were higher in soil conditions than in hydroponics. Antioxidant parameters, such as malondialdehyde (MDA) and H2O2 contents were higher in hydroponics plants, while, superoxide dismutase (SOD), peroxidase (POD), and catalase (CAT) showed a mix trend of response level. In addition, proline content was significantly higher in soil and ascorbic acid (ASA) in hydroponic cultured plants under different types, sizes, and concentrations of MPs. These three systems i.e., root, photosynthesis, and antioxidant parameters were also compared between different species, however, the results are generally consistent with the above mentions one. Overall, these analyses suggest that plants grown in hydroponics are more sensitive to the plastic pollution than in the soil environment.
水培环境中的微塑料和纳米塑料对植物至关重要:荟萃分析
微塑料(MPs)和纳米塑料(NPs)在环境中的存在是普遍存在的,因此,这些塑料的毒性,暴露情景和植物反应机制有待确定。因此,通过荟萃分析,研究了在水培和土壤条件下,MPs和/或NPs对不同植物物种的影响,以评估当前情景。研究了植物根系、光合参数和抗氧化系统对MPs/NPs的响应水平。土壤条件下根系对不同浓度和类型的多磺酸盐的响应水平高于水培,但对多磺酸盐类型的响应水平相反。叶绿素a和b、类胡萝卜素、总叶绿素和最大量子效率等光合参数在土壤条件下高于水培条件。水培植物抗氧化参数丙二醛(MDA)和H2O2含量较高,超氧化物歧化酶(SOD)、过氧化物酶(POD)和过氧化氢酶(CAT)呈混合响应趋势。此外,在不同类型、大小和MPs浓度下,土壤脯氨酸含量和水培植物抗坏血酸(ASA)含量均显著升高。对不同物种间的根系、光合作用和抗氧化参数这三个系统进行了比较,结果与上述基本一致。总的来说,这些分析表明,水培植物对塑料污染比土壤环境更敏感。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
Applied Environmental Biotechnology
Applied Environmental Biotechnology Agricultural and Biological Sciences-Agricultural and Biological Sciences (miscellaneous)
CiteScore
3.70
自引率
0.00%
发文量
2
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