Microplastic Pollution in Andisol: Effects on Soil Microbiology, Nitrogen Cycling, and Raphanus sativus L. Growth
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Wiley
2025
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| author | Gustavo Riveros María Dolores López‐Belchí José Ortiz Luisa Bascuñan‐Godoy Mauricio Schoebitz |
| author_facet | Gustavo Riveros María Dolores López‐Belchí José Ortiz Luisa Bascuñan‐Godoy Mauricio Schoebitz Gustavo Riveros María Dolores López‐Belchí José Ortiz Luisa Bascuñan‐Godoy Mauricio Schoebitz |
| collection | Wiley Open Access |
| contents | Microplastic Pollution in Andisol: Effects on Soil Microbiology, Nitrogen Cycling, and Raphanus sativus L. Growth Gustavo Riveros María Dolores López‐Belchí José Ortiz Luisa Bascuñan‐Godoy Mauricio Schoebitz Soil Use and Management ABSTRACT Microplastics (MPs) alter soil properties and plant physiology and pose a significant risk to crop health and food quality. This study assessed the effects of MPs (polyamide‐PA, low‐density polyethylene‐LDPE, and polypropylene‐PP) on Andisol and Raphanus sativus L. as a model plant. Plant characteristics, including growth, chlorophyll content, oxidative stress, antioxidant capacity, and bioactive compound profiles, were evaluated. In addition, the effects on soil nutrients, microbiological properties, and bacterial nitrogen‐cycling gene abundance were studied, revealing alterations in both soil and plants. Soil pH increased up to 4.3%, whereas dissolved organic carbon and polyphenol levels decreased, particularly in the PA (26%) and PP (29%) treatments. LDPE and PP increased β‐glucosidase activity (14% and 23%, respectively) and basal soil respiration (25% and 26%, respectively). Nitrogen‐cycling genes nifH , amoA , and nirS were notably more abundant in PP‐treated soils, with increases of 79%, 76%, and 62%, respectively. In R. sativus , PA and LDPE increased SPAD values by 9.9% and increased biomass in rootlets (155% in PA, 60% in LDPE) and radishes (125% in PP). Oxidative stress levels in radishes increased by 63% and 73% after exposure to LDPE and PP, respectively. MPs altered glucosinolate profiles in leaves and rootlets. Furthermore, PA and LDPE modified anthocyanin profiles in leaves, whereas PP altered the profile in radishes. This study highlights the impact of MPs on soil and plant physiology, identifying polyphenols and microbial biomass carbon as key predictors of R. sativus response. 10.1111/sum.70113 http://onlinelibrary.wiley.com/termsAndConditions#vor |
| doi_str_mv | 10.1111/sum.70113 |
| format | Artículo Open Access |
| id | wiley_oa_10_1111_sum_70113 |
| institution | Wiley Open Access |
| license_str_mv | http://onlinelibrary.wiley.com/termsAndConditions#vor |
| publishDate | 2025 |
| publisher | Wiley |
| record_format | wiley_oa |
| spellingShingle | Microplastic Pollution in Andisol: Effects on Soil Microbiology, Nitrogen Cycling, and Raphanus sativus L. Growth Gustavo Riveros María Dolores López‐Belchí José Ortiz Luisa Bascuñan‐Godoy Mauricio Schoebitz Soil Use and Management Microplastic Pollution in Andisol: Effects on Soil Microbiology, Nitrogen Cycling, and Raphanus sativus L. Growth Gustavo Riveros María Dolores López‐Belchí José Ortiz Luisa Bascuñan‐Godoy Mauricio Schoebitz Soil Use and Management ABSTRACT Microplastics (MPs) alter soil properties and plant physiology and pose a significant risk to crop health and food quality. This study assessed the effects of MPs (polyamide‐PA, low‐density polyethylene‐LDPE, and polypropylene‐PP) on Andisol and Raphanus sativus L. as a model plant. Plant characteristics, including growth, chlorophyll content, oxidative stress, antioxidant capacity, and bioactive compound profiles, were evaluated. In addition, the effects on soil nutrients, microbiological properties, and bacterial nitrogen‐cycling gene abundance were studied, revealing alterations in both soil and plants. Soil pH increased up to 4.3%, whereas dissolved organic carbon and polyphenol levels decreased, particularly in the PA (26%) and PP (29%) treatments. LDPE and PP increased β‐glucosidase activity (14% and 23%, respectively) and basal soil respiration (25% and 26%, respectively). Nitrogen‐cycling genes nifH , amoA , and nirS were notably more abundant in PP‐treated soils, with increases of 79%, 76%, and 62%, respectively. In R. sativus , PA and LDPE increased SPAD values by 9.9% and increased biomass in rootlets (155% in PA, 60% in LDPE) and radishes (125% in PP). Oxidative stress levels in radishes increased by 63% and 73% after exposure to LDPE and PP, respectively. MPs altered glucosinolate profiles in leaves and rootlets. Furthermore, PA and LDPE modified anthocyanin profiles in leaves, whereas PP altered the profile in radishes. This study highlights the impact of MPs on soil and plant physiology, identifying polyphenols and microbial biomass carbon as key predictors of R. sativus response. 10.1111/sum.70113 http://onlinelibrary.wiley.com/termsAndConditions#vor |
| title | Microplastic Pollution in Andisol: Effects on Soil Microbiology, Nitrogen Cycling, and Raphanus sativus L. Growth |
| topic | Soil Use and Management |
| url | https://bsssjournals.onlinelibrary.wiley.com/doi/10.1111/sum.70113 |