Exposure to microplastics lowers arsenic accumulation and alters gut bacterial communities of earthworm Metaphire californica

Wang, Hong-Tao; Ding, Jing; Xiong, Chan; Zhu, Dong; Li, Gang; Jia, Xiaoyu; Zhu, Yan; Xue, Xudong

doi:10.1016/j.envpol.2019.04.054

Cited by 204 publications

(48 citation statements)

References 58 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…To date, no research has been conducted on the impacts of MPs on heavy metal accumulation in plants. Only two studies have been conducted using earthworms and MPs: One found the addition of HDPE MPs in soil had no significant effects on Zn accumulation, mortality, and weight change of earthworms [ 17 ]; the other showed the presence of polyvinyl chloride MPs lessened the accumulation of total As and the reduction of As(V) in earthworms [ 33 ]. These findings indicate a combined toxicity between MPs and heavy metal(loid)s in soil.…”

Section: Resultsmentioning

confidence: 99%

Effects of Co-Contamination of Microplastics and Cd on Plant Growth and Cd Accumulation

Wang

Zhang

et al. 2020

Toxics

175

View full text Add to dashboard Cite

Microplastics (MPs) occur widely in terrestrial ecosystems. However, information on the interaction of MPs with metals in terrestrial ecosystems is lacking in the literature. The present study investigated the effects of two types of MPs (high-density polyethylene (HDPE) and polystyrene (PS)) with different dosages (i.e., 0, 0.1%, 1%, and 10%) on the uptake and effects of Cd in maize plants grown in an agricultural soil. Results showed that addition of Cd at a 5 mg/kg caused inhibited plant growth and resulted in high Cd accumulation in plant tissues. Polyethylene alone showed no significant phytotoxic effects, but a high-dose of HDPE (10%) amplified Cd phytotoxicity. Polystyrene negatively affected maize growth and phytoxicity further increased in the presence of Cd. Both HDPE and PS caused soil diethylenetriaminepentaacetic acid (DTPA)-extractable Cd concentrations to increase but did not significantly affect Cd uptake into plant tissues. In the soil without Cd addition, HDPE decreased soil pH, while PS did not significantly alter soil pH. However, in the soil spiked with Cd, both HDPE and PS increased pH. Overall, impacts on plant growth and Cd accumulation varied with MP type and dose, and PS induced substantial phytotoxicity. In conclusion, co-occurring MPs can change Cd bioavailability, plant performance, and soil traits. Our findings highlight the ecological impacts that could occur from the release of MPs into soil.

show abstract

Section: Resultsmentioning

confidence: 99%

Effects of Co-Contamination of Microplastics and Cd on Plant Growth and Cd Accumulation

Wang

Zhang

et al. 2020

Toxics

175

View full text Add to dashboard Cite

show abstract

“…The uptake of MPs of a broad size range by earthworms was shown in studies based on particles in earthworm casts of Lumbricus terrestris (Huerta Lwanga et al, 2016;Cao et al, 2017;Hodson et al, 2017;Rillig et al, 2017;Prendergast-Miller et al, 2019;Yu et al, 2019;Huerta Lwanga et al, 2017a), Eisenia fetida (Rodríguez-Seijo et al, 2018;Chen et al, 2020;Wang et al, 2019c), Eisenia andrei (Rodriguez-Seijo et al, 2017) and Metaphire californica (Wang et al, 2019b). showed that relatively large PE particles of 1.5 x1.5 cm 2 are not ingested by Lumbricus terrestris, but partial ingestion of such large particles of biodegradable MPs does take place after initial weathering in soil or in compost has occurred.…”

Section: Annelidamentioning

confidence: 99%

“…By far the most of the studies on the influence of MP on earthworms are performed with PE and the species Lumbricus terrestris or Eisenia fetida, but there are also single studies with Aporrectodea rosea (Boots et al, 2019) and Eisenia andrei (Rodriguez-Seijo et al, 2017) and with the less common species Metaphire californica (Wang et al, 2019b). We found one field study of earthworms and MPs (Huerta Lwanga et al, 2017a) among many laboratory experiments with MPs mixed into soil volumes (concentrations ranging up to 20000 mg kg -1 dry soil) or applied with litter on top of the soil surface (≤60% w/w).…”

Section: Annelidamentioning

confidence: 99%

“…However, there was no measurable negative effect of Zn or the PE on Lumbricus terrestris (Hodson et al, 2017). Wang et al (2019b) studied the influence of MP on arsenic uptake and negative effects on Metaphire californica and concluded that MPs decreased the uptake of arsenic and that MPs reduced the influence of arsenic on the gut bacterial communities. Rodríguez-Seijo et al (2019) showed altered enzyme activities and enhanced avoidence behavior in face of LD-PE pellets spiked with the insecticide chlorpyriphos.…”

Section: Annelidamentioning

confidence: 99%

See 1 more Smart Citation

What do we know about how the terrestrial multicellular soil fauna reacts to microplastic?

Büks¹,

Schaik²,

Kaupenjohann³

2020

Preprint

View full text Add to dashboard Cite

Abstract. The ubiquitous accumulation of microplastic (MP) particles across all global ecosystems comes along with the uptake into soil food webs. In this review, we analyzed studies on passive translocation, active ingestion, bioaccumulation and adverse effects within the phylogenetic tree of multicellular soil faunal life. The representativity of these studies for natural soil ecosystems was assessed using data on the type of plastic, shape, composition, concentration and time of exposure. Available studies cover a wide range of soil organisms, with emphasis on earthworms, nematodes, springtails, beetles and lugworms, each focused on well known model organisms. Most of the studies applied MP concentrations similar to amounts in slightly to very heavily polluted soils. In many cases, however, polystyrene microspheres have been used, a combination of plastic type and shape, that is easily available, but does not represent the main plastic input into soil ecosystems. In turn, MP fibres are strongly underrepresented compared to their high abundance within contaminated soils. Further properties of plastic such as aging, coating and additives were insufficiently documented. Despite these limitations, there is a recurring pattern of active intake followed by a population shift within the gut microbiome and adverse effects on motility, growth, metabolism, reproduction and mortality in various combinations, especially at high concentrations and small particle sizes. For the improvement of future studies, we identified problems of past experiments and give recommendations that take into account the type, shape, grade of aging, specific concentrations of MP fractions and long-term incubation in natural and contaminated soils.

show abstract

“…For example, some studies showed increased microplastic accumulation by earthworms when they were exposed to microplastics in the presence of other chemicals such as heavy metals and organic compounds 38,[41][42][43]46) , and some studies reported decreased microplastic accumulation by earthworms. 37,45) The differences in the microplastic accumulation can be explained by different factors including types and concentrations of contaminants that coexist with microplastics, characteristics of microplastics (i.e., types, sizes, shapes), and exposure periods.…”

Section: Combined Exposure To Microplastics and Chemicalsmentioning

confidence: 99%

Current Research Trends on the Effects of Microplastics in Soil Environment Using Earthworms: Mini-Review

Hur¹,

Jho²

2021

J Korean Soc Environ Eng

View full text Add to dashboard Cite

Objectives : The increase in the amount of plastics used has brought convenience to human life, but has also caused various environmental problems such as problems related to microplastics. Microplastics are defined as small plastic particles with a size of under 5 mm. As of now, research on microplastics has been largely focusing on the marine environment, and studies on microplastics in soil environment are on the rise in very recent years. Thus, the environmental impact of microplastics on the soil environment are insufficient than those on the marine environment, and there is a need for more studies. Therefore, this mini-review attempts to examine the studies on microplastics in soil environment focusing on the studies using earthworms as a test species.Methods : Published studies on microplastics in soil environment were identified by searching Web of Science. The focus of this mini-review was to gather the published articles reporting the effect of microplastics on earthworms in the absence and presence of other chemical contaminants.Results and Discussions : The number of studies evaluating the effect of microplastics in soil are significantly increasing, and earthworms are being mostly used as the test species. Experimental conditions were divided into two types: Single exposure to microplastics and combined exposure to microplastics and other chemicals. In most studies, changes in the biomarkers which are related to oxidation stress of earthworms were confirmed, and direct damage to intestinal tissues of earthworms was also observed. However, in the case of the changes of the biomarkers of earthworms, their patterns were different depending on the experimental conditions (i.e., concentrations of microplastics and chemicals, microplastics size and type, exposure period, etc.). Also, the avoidance behavior of earthworms and the internal accumulation of microplastics and co-existing chemicals were not consistent among the studies. Thus, the effects of microplastics on earthworms are not clear yet, although they seem to have some adverse effects.Conclusions : This study showed that the interest in the impact of microplastics in the soil environment has been increased recently, and earthworms are being used mostly in the studies. Yet, there is no standardized method to study the effect of microplastics on earthworms. Studies so far confirmed that microplastics induced changes in and outside of earthworm bodies. However, due to various experimental conditions, it seemed that consistent results could not be confirmed in those researches. For that reason, this study suggests that standardized research methods for microplastics researches using earthworms as a test species need to be established and need to be applied to further studies.

show abstract

Exposure to microplastics lowers arsenic accumulation and alters gut bacterial communities of earthworm Metaphire californica

Cited by 204 publications

References 58 publications

Effects of Co-Contamination of Microplastics and Cd on Plant Growth and Cd Accumulation

Effects of Co-Contamination of Microplastics and Cd on Plant Growth and Cd Accumulation

What do we know about how the terrestrial multicellular soil fauna reacts to microplastic?

Current Research Trends on the Effects of Microplastics in Soil Environment Using Earthworms: Mini-Review

Contact Info

Product

Resources

About