We can't find the internet
Attempting to reconnect
Something went wrong!
Hang in there while we get back on track
Critical Ecological Niche in Soil Carbon Cycling and Environmental Remediation: The Gut Microbiota of Earthworms Pheretima aspergillum
AI summary Read the abstract
Researchers performed metagenomic analysis of the earthworm Pheretima aspergillum's gut microbiome and found a distinct microbial community enriched in Actinomycetota and Bacillota, with several genes linked to plastic degradation — suggesting earthworm gut microbiota may harbor potential for microplastic breakdown in soil.
The gut microbiota of earthworms plays a crucial role in the carbon cycle and pollution remediation. However, degradation capacities and strategies of earthworm gut microbiota towards major carbon source. We selected endogeic earthworm Pheretima aspergillum (E. Perrier, 1872) from the surface layer (0–10 cm depth) of Hortic Anthrosol soil and conducted metagenomic analyses of gut microbiota, casts, and habitat soil. The α-diversity indexes of earthworm P. aspergillum gut microbiota were higher than those of cast and soil, indicating a more diverse community structure in earthworm P. aspergillum gut. Gut microbiota composition differed markedly from casts and soil, with Actinomycetota and Bacillota enriched in earthworm guts. The phyla of Actinomycetota and Bacillota were enriched in earthworm gut microbiota. Furthermore, Methylococcaceae and Methanosarcinaceae families (methane cycling) were enriched in earthworm gut microbiota. Soil bacterial communities exhibited greater degradation potential for starch, cellulose, xylan and pectin, whereas gut microbiota showed superior chitin degradation capacity. Metagenomic analysis of the earthworm gut microbiota revealed the presence of several genes associated with plastic degradation. Therefore, we speculate that the microbial community may harbor the potential to degrade microplastics. These findings elucidate earthworms’ role in soil carbon cycling and remediation.
More Papers Like This
Earthworm-microbiome interactions: Unlocking next-generation bioindicators and bioengineered solutions for soil and environmental health
AI summary Read the abstract
This review explores how earthworms and their associated microbiomes can serve as bioindicators of soil contamination from pollutants including microplastics. Changes in earthworm gut microbial communities can act as early warning signals of soil pollution, and engineered earthworm-microbiome systems show potential for environmental remediation. The study suggests that understanding these biological interactions could lead to new biomonitoring tools for assessing microplastic contamination in terrestrial ecosystems.
Decay of low-density polyethylene by bacteria extracted from earthworm's guts: A potential for soil restoration
AI summary Read the abstract
Researchers isolated bacteria from earthworm guts that were able to degrade low-density polyethylene, demonstrating that intestinal microbes from soil invertebrates may play a role in plastic breakdown. The findings suggest that earthworm gut microbiomes are a reservoir of plastic-degrading bacteria with potential applications for bioremediation of LDPE-contaminated soils.
Earthworms As An Emerging Biotechnological Intervention in the Mitigation of Microplastics
AI summary Read the abstract
This review explores the emerging role of earthworms as biological agents for degrading microplastics in soil environments. Researchers found that earthworm gut microflora and mucous secretions actively contribute to breaking down plastic polymers through enzymatic depolymerization. The study suggests that earthworm-mediated biodegradation could be a promising biotechnological approach for mitigating microplastic contamination in terrestrial ecosystems.
Ecotype-Specific Drilosphere Microbiome Reprogramming Influencing Microplastic Impacts on Soil Carbon–Nitrogen Characteristics and Earthworm Health
AI summary Read the abstract
Tiny plastic particles from pollution build up in the soil around earthworm burrows and guts, disrupting the good bacteria that keep soil healthy and making it harder for soil to hold onto nitrogen — a key nutrient for growing food. This matters because earthworms are essential for healthy soil that our crops depend on, and this research shows microplastics can quietly damage that system by harming earthworms' immune systems and digestion in ways that ripple through the food chain.
Microplastics in Motion: How Earthworm Guts Become Microbial Gateways through Plastic Surface Dynamics
AI summary Read the abstract
This study tracked how microplastics move through earthworm digestive systems and found that the gut environment alters the microbial communities colonizing plastic surfaces, potentially transforming earthworms into vectors that spread plastic-associated microbes through soil ecosystems.
Research digests by email
When a large batch of papers lands in the Atlas, we read through it and send a short write-up of what stood out.