Response of soybean and maize roots and soil enzyme activities to biodegradable microplastics contaminated soil
Although biodegradable plastic film is a promising alternative product for reducing polyethylene plastic pollution in agricultural soils, the effects of its residues on plant growth and soil properties remain unclear. In this study, we conducted an experiment to investigate root properties and soil...
| Main Authors: | , , , , , , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2023-09-01
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| Series: | Ecotoxicology and Environmental Safety |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S0147651323006334 |
| _version_ | 1797744141536329728 |
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| author | Yao Yu Yanhua Chen Yan Wang Sha Xue Mengjuan Liu Darrell W.S. Tang Xiaomei Yang Violette Geissen |
| author_facet | Yao Yu Yanhua Chen Yan Wang Sha Xue Mengjuan Liu Darrell W.S. Tang Xiaomei Yang Violette Geissen |
| author_sort | Yao Yu |
| collection | DOAJ |
| description | Although biodegradable plastic film is a promising alternative product for reducing polyethylene plastic pollution in agricultural soils, the effects of its residues on plant growth and soil properties remain unclear. In this study, we conducted an experiment to investigate root properties and soil enzyme activities in Poly (butylene adipate-co-terephthalate) microplastics (PBAT-MPs) contaminated soil (0 % (CK), 0.1 %, 0.2 %, 0.5 % and 1 % of dry soil weight) with soybean (Glycine max (Linn.) Merr.) and maize (Zea mays L.). The results show that PBAT-MP accumulation in soil negatively affects root growth, and alter soil enzyme activities, which may then constrain C/N cycling and potential yields. For soybean, the total root length, total root surface area and root biomass decreased by 34 %− 58 %, 34 %− 54 % and 25 %− 40 % at the harvesting stage compared to CK, respectively. The negative effects of PBAT-MPs on maize roots were greater than on soybean roots. The total root length, root surface area and root biomass of maize decreased by 37 %− 71 %, 33 %− 71 % and 24 %− 64 % at the tasseling and harvesting stage, respectively (p < 0.05). Furthermore, a statistical analysis of the data indicates that the inhibition of soybean and maize root growth by PBAT-MP accumulation was mediated by the significantly different impacts of PBAT-MP addition on C-enzyme (β-xylosidase, cellobiohydrolase, β-glucosidase) and N-enzyme activities (leucine-aminopeptidase, N-acetyl-β-glucosaminidase, alanine aminotransferase) in rhizosphere and non-rhizosphere soil, possibly due to interactions with plant-specific root exudates and microbial communities. These findings show the potential risks posed by biodegradable microplastics on the plant-soil system, and suggest that biodegradable plastic film should be applied with caution. |
| first_indexed | 2024-03-12T15:05:29Z |
| format | Article |
| id | doaj.art-8c3b6b747cb4459a958c50ba8eca377a |
| institution | Directory Open Access Journal |
| issn | 0147-6513 |
| language | English |
| last_indexed | 2024-03-12T15:05:29Z |
| publishDate | 2023-09-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Ecotoxicology and Environmental Safety |
| spelling | doaj.art-8c3b6b747cb4459a958c50ba8eca377a2023-08-13T04:51:42ZengElsevierEcotoxicology and Environmental Safety0147-65132023-09-01262115129Response of soybean and maize roots and soil enzyme activities to biodegradable microplastics contaminated soilYao Yu0Yanhua Chen1Yan Wang2Sha Xue3Mengjuan Liu4Darrell W.S. Tang5Xiaomei Yang6Violette Geissen7College of Natural Resources and Environment, Northwest A&F University, 712100 Yangling, China; Soil Physics and Land Management Group, Wageningen University & Research, 6700AA, Wageningen, the NetherlandsInstitute of Plant Nutrition, Resources and Environment, Beijing Academy of Agriculture and Forestry Sciences, Beijing 100097, ChinaSoil Physics and Land Management Group, Wageningen University & Research, 6700AA, Wageningen, the NetherlandsInstitute of Soil and Water Conservation, Chinese Academy of Sciences and Ministry of Water Resources, Yangling, 712100, ChinaCollege of Agronomy, Northwest A&F University, 712100 Yangling, ChinaSoil Physics and Land Management Group, Wageningen University & Research, 6700AA, Wageningen, the NetherlandsCollege of Natural Resources and Environment, Northwest A&F University, 712100 Yangling, China; Soil Physics and Land Management Group, Wageningen University & Research, 6700AA, Wageningen, the Netherlands; Corresponding author at: College of Natural Resources and Environment, Northwest A&F University, 712100 Yangling, China.Soil Physics and Land Management Group, Wageningen University & Research, 6700AA, Wageningen, the NetherlandsAlthough biodegradable plastic film is a promising alternative product for reducing polyethylene plastic pollution in agricultural soils, the effects of its residues on plant growth and soil properties remain unclear. In this study, we conducted an experiment to investigate root properties and soil enzyme activities in Poly (butylene adipate-co-terephthalate) microplastics (PBAT-MPs) contaminated soil (0 % (CK), 0.1 %, 0.2 %, 0.5 % and 1 % of dry soil weight) with soybean (Glycine max (Linn.) Merr.) and maize (Zea mays L.). The results show that PBAT-MP accumulation in soil negatively affects root growth, and alter soil enzyme activities, which may then constrain C/N cycling and potential yields. For soybean, the total root length, total root surface area and root biomass decreased by 34 %− 58 %, 34 %− 54 % and 25 %− 40 % at the harvesting stage compared to CK, respectively. The negative effects of PBAT-MPs on maize roots were greater than on soybean roots. The total root length, root surface area and root biomass of maize decreased by 37 %− 71 %, 33 %− 71 % and 24 %− 64 % at the tasseling and harvesting stage, respectively (p < 0.05). Furthermore, a statistical analysis of the data indicates that the inhibition of soybean and maize root growth by PBAT-MP accumulation was mediated by the significantly different impacts of PBAT-MP addition on C-enzyme (β-xylosidase, cellobiohydrolase, β-glucosidase) and N-enzyme activities (leucine-aminopeptidase, N-acetyl-β-glucosaminidase, alanine aminotransferase) in rhizosphere and non-rhizosphere soil, possibly due to interactions with plant-specific root exudates and microbial communities. These findings show the potential risks posed by biodegradable microplastics on the plant-soil system, and suggest that biodegradable plastic film should be applied with caution.http://www.sciencedirect.com/science/article/pii/S0147651323006334Biodegradable plasticMicroplasticsPlant rootEnzyme activities |
| spellingShingle | Yao Yu Yanhua Chen Yan Wang Sha Xue Mengjuan Liu Darrell W.S. Tang Xiaomei Yang Violette Geissen Response of soybean and maize roots and soil enzyme activities to biodegradable microplastics contaminated soil Ecotoxicology and Environmental Safety Biodegradable plastic Microplastics Plant root Enzyme activities |
| title | Response of soybean and maize roots and soil enzyme activities to biodegradable microplastics contaminated soil |
| title_full | Response of soybean and maize roots and soil enzyme activities to biodegradable microplastics contaminated soil |
| title_fullStr | Response of soybean and maize roots and soil enzyme activities to biodegradable microplastics contaminated soil |
| title_full_unstemmed | Response of soybean and maize roots and soil enzyme activities to biodegradable microplastics contaminated soil |
| title_short | Response of soybean and maize roots and soil enzyme activities to biodegradable microplastics contaminated soil |
| title_sort | response of soybean and maize roots and soil enzyme activities to biodegradable microplastics contaminated soil |
| topic | Biodegradable plastic Microplastics Plant root Enzyme activities |
| url | http://www.sciencedirect.com/science/article/pii/S0147651323006334 |
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