Visual observation of polystyrene nano-plastics in grape seedlings of Thompson Seedless and assessing their effects via transcriptomics and metabolomics
文献类型： 外文期刊
作者： Zhang, Songlin 1 ; Zhang, Fuchun 1 ; Cai, Lu 2 ; Xu, Na 3 ; Zhang, Chuan 1 ; Yadav, Vivek 1 ; Zhou, Xiaoming 1 ; Wu, Xinyu 1 ; Zhong, Haixia 1 ;
作者机构： 1.Xinjiang Acad Agr Sci, Inst Hort Crops, State Key Lab Genet Improvement & Germplasm Innova, Key Lab Genome Res & Genet Improvement Xinjiang Ch, Urumqi, Peoples R China
2.Xinjiang Agr Univ, Coll Grass Ind, Urumqi, Peoples R China
3.Xinjiang Univ, Coll Life Sci & Technol, Urumqi, Peoples R China
关键词： Grape; Micro/nano-plastics; Uptake and transport; Response mechanism; Oxidative damage
期刊名称：JOURNAL OF HAZARDOUS MATERIALS （ 影响因子：11.3； 五年影响因子：12.4 ）
ISSN： 0304-3894
年卷期： 2024 年 478 卷
页码：
收录情况： SCI
摘要： Micro/nano-plastics (MNPs) are emerging non-point source pollutants that have garnered increasing attention owing to their threat to ecosystems. Studies on the effects of MNPs on horticultural crops are scarce. Specifically, whether MNPs can be absorbed and transported by grapevines have not been reported. To fill this gap, we added polystyrene nanoplastics (PS-NPs, 100 nm) to a hydroponic environment and observed their distribution in grape seedlings of Thompson Seedless (TS, Vitis vinifera L.). After 15 d of exposure, plastic nanospheres were detected on the cell walls of the roots, stems, and leaves using confocal microscopy and scanning electron microscopy. This indicated that PS-NPs can also be absorbed by the root system through the epidermis-cortex interface in grapevines and transported upward along the xylem conduit. Furthermore, we analyzed the molecular response mechanisms of TS grapes to the PS-NPs. Through the measurement of relevant indicators and combined omics analysis, we found that plant hormone signal transduction, flavonoid and flavonol biosynthesis, phenylpropanoid biosynthesis, and MAPK signaling pathway biosynthesis played crucial roles in its response to PS-NPs. The results not only revealed the potential risk of MNPs being absorbed by grapevines and eventually entering the food chain but also provided valuable scientific evidence and data for the assessment of plant health and ecological risk.
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