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The Stressful Effects of Microplastics Associated With Chromium (VI) on the Microbiota of Daphnia Magna

Varg, Javier Edo and Vargas, Javier and Bergvall, Christoffer and Svanback, Richard (2022). The Stressful Effects of Microplastics Associated With Chromium (VI) on the Microbiota of Daphnia Magna. Frontiers in Environmental Science. 10 , 875512
[Research article]

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Abstract

Contamination by microplastics (particles < 1 mm) is a growing and alarming environmental problem in freshwater systems. Evidence suggests that industrial effluents could be one of the critical point sources of microplastics and other pollutants, and their interaction can cause organismal stress and affect host and environmental microbial communities. We tested the individual and combined effects of microplastics and other pollutants on host survival and host associated (commensal) bacterial diversity. We exposed Daphnia magna to 1 mu m microplastic beads with a concentration of approximately 1820 particles/ml and chromium (VI) simultaneously with treatments of 2 and 5 ppm for 72 h. DNA extraction was done to amplify and sequence the ribosomal Bacterial 16S from both the water and the Daphnia. Daphnia experienced low mortality in treatments microplastics (13.3%) and 2 ppm chromium VI (30%) individually. However, the combination of microplastics and 2 ppm chromium (VI) increased the mortality to 74.4%. In the treatments with 5 ppm of chromium (VI) mortality rose to 100% after 30 h of exposure. Microbial diversity changed in response to microplastics, chromium (VI), and both combined exposure. Microplastics and toxic metals can cause dysbiosis of freshwater environmental microbiota, whole host microbiota, and host survival. This work stresses the importance to assess how pollutants' individual and joint effects could affect organisms including their microbiome.

Authors/Creators:Varg, Javier Edo and Vargas, Javier and Bergvall, Christoffer and Svanback, Richard
Title:The Stressful Effects of Microplastics Associated With Chromium (VI) on the Microbiota of Daphnia Magna
Series Name/Journal:Frontiers in Environmental Science
Year of publishing :2022
Volume:10
Article number:875512
Number of Pages:13
Publisher:FRONTIERS MEDIA SA
ISSN:2296-665X
Language:English
Publication Type:Research article
Article category:Scientific peer reviewed
Version:Published version
Copyright:Creative Commons: Attribution 4.0
Full Text Status:Public
Subjects:(A) Swedish standard research categories 2011 > 1 Natural sciences > 105 Earth and Related Environmental Sciences > Environmental Sciences (social aspects to be 507)
Keywords:microplastics, toxic metals, microbiota, host-microbiome, ecotoxicology, multiple stressors
URN:NBN:urn:nbn:se:slu:epsilon-p-117572
Permanent URL:
http://urn.kb.se/resolve?urn=urn:nbn:se:slu:epsilon-p-117572
Additional ID:
Type of IDID
DOI10.3389/fenvs.2022.875512
Web of Science (WoS)000806564700001
ID Code:28574
Faculty:NJ - Fakulteten för naturresurser och jordbruksvetenskap
Department:(NL, NJ) > Dept. of Aquatic Sciences and Assessment
Deposited By: SLUpub Connector
Deposited On:26 Aug 2022 08:13
Metadata Last Modified:13 Sep 2022 17:55

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