Greenhouse gas cycling by the plastisphere: The sleeper issue of plastic pollution

Cornejo-D’Ottone, Marcela; Molina, Verónica; Pavez, Javiera; Silva, Nelson

doi:10.1016/j.chemosphere.2019.125709

Cited by 37 publications

(16 citation statements)

References 32 publications

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“…Prior to the denitrification experiment, a portion of bulk water was first filtered through a 0.22-μm polycarbonate membrane to remove microorganisms and then transferred into 250-mL sterile beakers. Thereafter, the collected plastic debris was placed in these beakers, and biofilms were repeatedly shaken, agitated, and washed with the sterile bulk water until a large proportion of the biofilms were detached 69 . Plastisphere suspensions were then collected for the determinations of denitrification rate, N 2 O reduction ratio (f R ), EPS and c-di-GMP levels, and further experiments (Supplementary Fig.…”

Section: Methodsmentioning

confidence: 99%

Estuarine plastisphere as an overlooked source of N2O production

Yang

et al. 2022

Nat Commun

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Abstract“Plastisphere”, microbial communities colonizing plastic debris, has sparked global concern for marine ecosystems. Microbiome inhabiting this novel human-made niche has been increasingly characterized; however, whether the plastisphere holds crucial roles in biogeochemical cycling remains largely unknown. Here we evaluate the potential of plastisphere in biotic and abiotic denitrification and nitrous oxide (N2O) production in estuaries. Biofilm formation provides anoxic conditions favoring denitrifiers. Comparing with surrounding bulk water, plastisphere exhibits a higher denitrifying activity and N2O production, suggesting an overlooked N2O source. Regardless of plastisphere and bulk water, bacterial and fungal denitrifications are the main regulators for N2O production instead of chemodenitrification. However, the contributions of bacteria and fungi in the plastisphere are different from those in bulk water, indicating a distinct N2O production pattern in the plastisphere. These findings pinpoint plastisphere as a N2O source, and provide insights into roles of the new biotope in biogeochemical cycling in the Anthropocene.

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Section: Methodsmentioning

confidence: 99%

Estuarine plastisphere as an overlooked source of N2O production

Yang

et al. 2022

Nat Commun

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“…The degree to which the types of MPs and NPs influence nutrient concentrations and are correlated to plastisphere microbial diversity needs to be understood. Similarly, how these changes would affect the plastisphere's significant benefit to surface biogeochemical cycles, including climatically active GHGs, needs to be understood as well [139]. MPs and NPs are known to cause a dynamic shift in the soil temperature as is commonly practiced in agriculture sectors with extreme climatic conditions.…”

Section: Impact Of Micro and Nano Plastics On Ecosystem Services And Climate Changementioning

confidence: 99%

“…Hu et al [137] highlighted knowledge gaps related to the consequences of MPs and NPs on global biodiversity and impacts on ecosystem services. MPs pollution promotes greenhouse gas emissions (GHGs) and interferes with carbon fixation in marine ecosystems [138,139]. In addition, Sridharan et al [140] investigated how MPs and NPs destabilize the global ecosystem services as well as influence the functioning of aquatic and terrestrial biota.…”

Section: Introductionmentioning

confidence: 99%

Impacts of Plastic Pollution on Ecosystem Services, Sustainable Development Goals, and Need to Focus on Circular Economy and Policy Interventions

et al. 2021

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Plastic pollution is ubiquitous in terrestrial and aquatic ecosystems. Plastic waste exposed to the environment creates problems and is of significant concern for all life forms. Plastic production and accumulation in the natural environment are occurring at an unprecedented rate due to indiscriminate use, inadequate recycling, and deposits in landfills. In 2019, the global production of plastic was at 370 million tons, with only 9% of it being recycled, 12% being incinerated, and the remaining left in the environment or landfills. The leakage of plastic wastes into terrestrial and aquatic ecosystems is occurring at an unprecedented rate. The management of plastic waste is a challenging problem for researchers, policymakers, citizens, and other stakeholders. Therefore, here, we summarize the current understanding and concerns of plastics pollution (microplastics or nanoplastics) on natural ecosystems. The overall goal of this review is to provide background assessment on the adverse effects of plastic pollution on natural ecosystems; interlink the management of plastic pollution with sustainable development goals; address the policy initiatives under transdisciplinary approaches through life cycle assessment, circular economy, and sustainability; identify the knowledge gaps; and provide current policy recommendations. Plastic waste management through community involvement and socio-economic inputs in different countries are presented and discussed. Plastic ban policies and public awareness are likely the major mitigation interventions. The need for life cycle assessment and circularity to assess the potential environmental impacts and resources used throughout a plastic product’s life span is emphasized. Innovations are needed to reduce, reuse, recycle, and recover plastics and find eco-friendly replacements for plastics. Empowering and educating communities and citizens to act collectively to minimize plastic pollution and use alternative options for plastics must be promoted and enforced. Plastic pollution is a global concern that must be addressed collectively with the utmost priority.

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“…Moreover, the impacts of plastic pollution to primary production by microbial photoautotrophs in the marine environment need further clarifying as floating plastic debris has been described as hotspots for net autotrophic production 12 , while adverse effects on these organisms have also been reported 165,324,329,347,348 . The plastisphere has also been found to contribute to greenhouse gas (CO2 and N2O) fluxes in the eastern South Pacific Ocean, albeit the contribution was rather small (less than 1% of the overall ocean contribution 147 ). Experimental evidence also indicates that exposure to plastics and related leachates can negatively affect biocalcification by marine forams, resulting in possible impacts on oceanic carbon storage and consequently climate regulation 319 .…”

mentioning

confidence: 99%

<em> </em>Current Research on Microbe-Plastic Interactions in the Marine Environment

Latva¹,

Zadjelovic²,

Wright³

2021

Preprint

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The microbial colonisers of plastics – the ‘plastisphere’ – can affect all interactions that plastics have with their surrounding environments. While only specifically characterised within the last 10 years, at the beginning of 2021 there were 140 primary research and 65 review articles that investigate at least one aspect of the plastisphere. We gathered information on the locations and methodologies used by each of the primary research articles, highlighting several aspects of plastisphere research that remain understudied: (i) the non-bacterial plastisphere constituents; (ii) the mechanisms used to degrade plastics by marine isolates or communities; (iii) the capacity for plastisphere members to be pathogenic or carry antimicrobial resistance genes; and (iv) meta-OMIC characterisations of the plastisphere. We have also summarised the topics covered by the existing plastisphere review articles, identifying areas that have received less attention to date – most of which are in line with the areas that have fewer primary research articles. Therefore, in addition to providing an overview of some fundamental topics such as biodegradation and community assembly, we discuss the importance of eukaryotes in shaping the plastisphere, potential pathogens carried by plastics and the impact of the plastisphere on plastic transport and biogeochemical cycling. Finally, we summarise the future directions suggested by the reviews that we have evaluated and suggest other key research questions.

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Greenhouse gas cycling by the plastisphere: The sleeper issue of plastic pollution

Cited by 37 publications

References 32 publications

Estuarine plastisphere as an overlooked source of N2O production

Estuarine plastisphere as an overlooked source of N2O production

Impacts of Plastic Pollution on Ecosystem Services, Sustainable Development Goals, and Need to Focus on Circular Economy and Policy Interventions

<em> </em>Current Research on Microbe-Plastic Interactions in the Marine Environment

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