Particulate plastics-plant interaction in soil and its implications: A review

Area of Science:

• Environmental Science
• Agronomy
• Ecotoxicology

Background:

• Particulate plastics (macro, micro, and nanoplastics) pose a global environmental risk.
• Aquatic plastic pollution is well-studied, but soil ecosystems, a major plastic sink, are under-investigated.
• Soil plastic contamination directly affects plant growth and the safety of agricultural products.

Purpose of the Study:

• To comprehensively review plastic pollution in agricultural soils.
• To examine plastic uptake, mechanisms, and effects on plants.
• To identify research gaps and future directions for managing plastic-contaminated soils.

Main Methods:

• Literature review synthesizing existing research on soil plastic pollution.
• Analysis of plastic pollution characteristics and exposure pathways in agricultural soils.
• Examination of plant responses to various plastic types and co-pollutants.

Main Results:

• Soil is a significant reservoir for particulate plastics, impacting plant development.
• Understanding plastic uptake, translocation, and phytotoxicity is crucial.
• Biodegradable plastics and combined pollutants present complex challenges for plant performance.

Conclusions:

• Further research is needed on accurate plastic quantification in soil and plants.
• Investigating the environmental fate and plant molecular responses to plastics is essential.
• Developing management practices for safe agricultural production in contaminated soils is a priority.