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Interactions between microplastics/nanoplastics and vascular plants
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This review examines how microplastics and nanoplastics interact with vascular plants, covering both how plants affect the fate of plastic particles and how the particles affect plant health. Researchers found that plants can act as sinks for micro- and nanoplastics, accumulating them from soil and water, while exposure to these particles can inhibit seed germination, root growth, and photosynthesis. The study highlights the importance of understanding these interactions for assessing risks to agricultural productivity and food safety.
Microplastics and nanoplastics are distributed in the environments universally. The interrelationship between vascular plants and micro/nanoplastics began to attract attention in recent years. Based on the relevant literatures collected from various databases, this review focuses on two topics: 1) the effect of vascular plants on the fate of micro/nanoplastics; 2) the effects of micro/nanoplastics on vascular plants. The review of the available studies reveals that vascular plants can act as sinks for microplastics and nanoplastics as their surfaces can adsorb these plastics; moreover, nanoplastics can be internalized by plants. Plastics on the surfaces and in the interiors of vascular plants can cause various phytotoxicity effects, including impacts on growth, photosynthesis, and oxidative stress. Furthermore, the results and mechanisms of phytotoxicity effects caused by microplastics or nanoplastics can be very different. However, knowledge gaps still exist in the relationships between micro/nanoplastics and vascular plants based on the analysis of available studies; thus, potential subjects for future studies were proposed, including the fates, analysis methods, influencing factors, mechanisms of phytotoxicity, and further influences of microplastics and nanoplastics in the vascular plant ecosystems. This study presents a review of micro/nanoplastics-vascular plant research and reaches a basis for future research.
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This review summarizes how microplastics and nanoplastics affect plant health at the cellular and genetic level, disrupting metabolism, nutrient uptake, and growth in vascular plants. Since contaminated crops are a pathway for microplastics to enter the human diet, understanding how plants absorb and respond to these particles is important for food safety.
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