4.7 Article

Impact of microplastics on growth, photosynthesis and essential elements in Cucurbita pepo L.

期刊

JOURNAL OF HAZARDOUS MATERIALS
卷 423, 期 -, 页码 -

出版社

ELSEVIER
DOI: 10.1016/j.jhazmat.2021.127238

关键词

Microplastic toxicity; Leaf traits; Chlorophyll fluorescence; Ionome; Zucchini

资金

  1. University of Florence (Fondi di Ateneo 2020)

向作者/读者索取更多资源

Different microplastics have specific and concentration-dependent toxic effects on the growth of Cucurbita pepo, with PVC identified as the most toxic and PE as the least toxic material. Microplastic pollution may result in yield and economic loss for C. pepo, as well as potential risks for entering the food chain.
In this study, Cucurbita pepo L., one of the most cultivated, consumed and economically important crop worldwide, was used as model plant to test the toxic effects of the four most abundant microplastics identified in contaminated soils, i.e. polypropylene (PP), polyethylene (PE), polyvinylchloride (PVC), and polyethyleneterephthalate (PET). Cucurbita plants were grown in pots with increasing concentrations of the microplastics, then plant biometry, photosynthetic parameters and ionome of treated vs. untreated samples were compared to evaluate the toxicity of each plastic. All the pollutants impaired root and, especially, shoot growth. Specific and concentration-dependant effects of the different microplastics were found, including reduction in leaf size, chlorophyll content and photosynthetic efficiency, as well as changes in the micro-and macro elemental profile. Among all the microplastics, PVC was identified as the most toxic and PE as the less toxic material. PVC decreased the dimensions of the leaf lamina, the values of the photosynthetic performance index and the plant iron concentration to a higher extent in respect to the other treatments. Microplastic toxicity exerted on the growth of C. pepo raises concerns about possible yield and economic loss, as well as for risks of a possible transfer into the food chain.

作者

我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。

评论

主要评分

4.7
评分不足

次要评分

新颖性
-
重要性
-
科学严谨性
-
评价这篇论文

推荐

暂无数据
暂无数据