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Adsorption of polyethylene microbeads and physiological effects on hydroponic maize

dc.contributor.authorUrbina M.A.
dc.contributor.authorCorrea F.
dc.contributor.authorAburto F.
dc.contributor.authorFerrio J.P.
dc.date.accessioned2020-09-02T22:29:59Z
dc.date.available2020-09-02T22:29:59Z
dc.date.issued2020
dc.identifier10.1016/j.scitotenv.2020.140216
dc.identifier.citation741, , -
dc.identifier.issn00489697
dc.identifier.urihttps://hdl.handle.net/20.500.12728/6537
dc.descriptionAbout 90% of the plastic garbage remains in terrestrial ecosystems, and increasing evidence highlights the exposure of crops to plastic particles. However, the potential bioaccumulation of microplastics by plants and their effects on plants' physiology remains unexplored. Here, we evaluated the adsorption, potential uptake, and physiological effects of polyethylene (PE) microbeads in an experimental hydroponic culture of maize. Using isotope analysis, taking advantage of the different carbon isotope composition (δ13C) of fossil-derived PE and C4 plants (e.g., maize), we estimated that about 30% of the carbon in the rhizosphere of microplastic-exposed plants was derived from PE. Still, we did not find evidence of PE translocation to the shoots. Plastic bioaccumulation in the rhizosphere caused a significant decline in transpiration, nitrogen content, and growth. Our results indicate that plastic particles may accumulate in the rhizosphere, impairing water and nutrient uptake, and eventually reaching root eaters. Due to the implications for food production and livestock feeding, our findings encourage further research on the mechanism leading to the bioaccumulation of microplastics on the surface of belowground tissues. © 2020 Elsevier B.V.
dc.language.isoen
dc.publisherElsevier B.V.
dc.subjectBioaccumulation
dc.subjectGreen fodder
dc.subjectHydroponics
dc.subjectMicroplastic uptake
dc.subjectMicroplastics
dc.subjectStable isotopes
dc.subjectAgriculture
dc.subjectAliphatic compounds
dc.subjectBioaccumulation
dc.subjectBiochemistry
dc.subjectCarbon
dc.subjectIsotopes
dc.subjectMicroplastic
dc.subjectNutrients
dc.subjectPolyethylenes
dc.subjectSoils
dc.subjectCarbon isotope composition
dc.subjectFood production
dc.subjectHydroponic culture
dc.subjectIsotope analysis
dc.subjectNitrogen content
dc.subjectPhysiological effects
dc.subjectPlastic particle
dc.subjectTerrestrial ecosystems
dc.subjectMicrobeads
dc.subjectcarbon 13
dc.subjectnitrogen
dc.subjectpolyethylene
dc.subjectwater
dc.subjectadsorption
dc.subjectbioaccumulation
dc.subjectexperimental study
dc.subjecthydroponics
dc.subjectmaize
dc.subjectphysiology
dc.subjectplastic waste
dc.subjectpolymer
dc.subjectterrestrial ecosystem
dc.subjectadsorption
dc.subjectArticle
dc.subjectbioaccumulation
dc.subjectcontrolled study
dc.subjectfood industry
dc.subjectfossil
dc.subjecthydroponics
dc.subjectisotope analysis
dc.subjectlivestock
dc.subjectmaize
dc.subjectmicroplastic pollution
dc.subjectnonhuman
dc.subjectplant growth
dc.subjectplastic waste
dc.subjectpriority journal
dc.subjectrhizosphere
dc.subjectshoot
dc.subjectsweating
dc.subjectwater transport
dc.subjectZea mays
dc.titleAdsorption of polyethylene microbeads and physiological effects on hydroponic maize
dc.typeArticle


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