Microplastics in Plant Species: Impacts and Ecological Perspectives

Microplastics are ubiquitous environmental contaminants whose presence in terrestrial ecosystems has become a growing concern, particularly regarding their impact on plant species. This chapter provides an in-depth analysis of the effects of microplastic pollution on plant health and soil ecology. We explore the ways in which microplastics affect plant growth, soil properties, and nutrient cycling through both direct and indirect mechanisms. These were done by reviewing current literature on microplastic interactions with soil biota and the resulting changes in soil structure and function, which ultimately influence plant physiology. Further, we discuss the absorption and accumulation of microplastics in plant tissues. Evidence from both controlled experiments and field studies reveals the potential of microplastics to induce stress responses in plants, including reductions in seed germination, root elongation, and photosynthetic activity. The role of microorganisms in microplastic degradation and the subsequent effects on plant- microbe interactions are also addressed, thereby identifying gaps in current knowledge. In summary, this chapter underscores the urgent need to better understand the environmental implications of microplastics and develop sustainable practices for managing microplastic pollution. The findings presented call for increased research efforts to determine the long-term implications of microplastics on plant life, the resilience of ecosystems, and the broader implications for human well-being.