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Negative effects of poly (butylene adipate-co-terephthalate) microplastics on Arabidopsis and its root-associated microbiome
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Researchers investigated the effects of poly(butylene adipate-co-terephthalate) (PBAT) biodegradable microplastics on Arabidopsis thaliana and its root-associated microbiome, finding that PBAT-MPs at tested concentrations in agricultural soil caused negative impacts on plant growth and altered the composition of root-zone microbial communities.
Poly(butylene adipate-co-terephthalate) (PBAT) is a biodegradable polymer that is widely used in the production of biodegradable mulch films in order to reduce the white pollution caused by non-biodegradable polyethylene mulch. Despite its widespread use in agriculture, the effects of PBAT microplastics (PBAT-MPs) on plant growth and microbial communities have rarely been reported. In this study, Arabidopsis thaliana were planted as model crop in soil containing 2 Also see: https://micro2024.sciencesconf.org/558926/document
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Negative effects of poly (butylene adipate-co-terephthalate) microplastics on Arabidopsis and its root-associated microbiome
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Researchers investigated the effects of poly(butylene adipate-co-terephthalate) (PBAT) microplastics on Arabidopsis thaliana growth and root-associated microbiome composition in agricultural soil, at a concentration of 2% by weight. Results revealed negative effects on plant growth and alterations to the rhizosphere microbial community, raising concerns about the ecological safety of this widely used biodegradable mulch film material.
Negative effects of poly(butylene adipate-co-terephthalate) microplastics on Arabidopsis and its root-associated microbiome
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Researchers found that the biodegradable plastic PBAT had greater inhibitory effects on Arabidopsis growth than conventional LDPE microplastics, disrupting photosynthesis and altering root-associated microbial communities in ways that suggest biodegradable plastics are not necessarily safer for soil ecosystems.
Biodegradable PBAT microplastics adversely affect pakchoi (Brassica chinensis L.) growth and the rhizosphere ecology: Focusing on rhizosphere microbial community composition, element metabolic potential, and root exudates
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Researchers compared biodegradable PBAT plastic microplastics with conventional polyethylene microplastics in soil and found that the biodegradable version actually caused more harm to plant growth and soil health. PBAT microplastics reduced nutrient availability, disrupted the soil microbial community, and altered root chemistry more than conventional plastic. This finding challenges the assumption that biodegradable plastics are always safer for the environment.
Impacts of biodegradable microplastics on rhizosphere bacterial communities of Arabidopsis thaliana: Insights into root hair-dependent colonization
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Researchers investigated how biodegradable microplastics from PBAT plastic affect the bacterial communities around plant roots, using two genotypes of Arabidopsis with different root hair lengths. They found that longer root hairs promoted greater bacterial colonization and diversity, and that biodegradable microplastics boosted enzyme activity and shifted bacterial community composition in the root zone. The findings suggest that the effects of biodegradable microplastics on soil health depend on plant root characteristics.
Dosages of Biodegradable Poly(butylene adipate-co-terephthalate) Microplastics Affect Soil Microbial Community, Function, and Metabolome in Plant–Soil System
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Researchers examined how different concentrations of biodegradable PBAT microplastics affect soil microbial communities and lettuce growth. They found that while low concentrations had minimal impact, higher doses significantly altered soil microbial diversity, metabolic functions, and the chemical profile of the soil. The findings suggest that even biodegradable plastic mulch residues can disrupt soil ecosystems when they accumulate at higher levels.
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