Polystyrene nanoplastics in soil impair drought priming-induced low temperature tolerance in wheat
文献类型： 外文期刊
作者： Wang, Ling 1 ; Sui, Yuting 1 ; Zhang, Peng 1 ; Wang, Zongshuai 3 ; Li, Shuxin 1 ; Liu, Tianhao 1 ; Li, Xiangnan 1 ;
作者机构： 1.Chinese Acad Sci, Northeast Inst Geog & Agroecol, Key Lab Black Soil Conservat & Utilizat, Changchun 130102, Peoples R China
2.Univ Chinese Acad Sci, Coll Adv Agr Sci, Beijing 100049, Peoples R China
3.Shandong Acad Agr Sci, Crop Res Inst, Jinan 250100, Peoples R China
关键词： Nanoplastics; Cold stress; Carbohydrate metabolism; Chloroplasts; Stress memory; Triticum aestivum
期刊名称：PLANT PHYSIOLOGY AND BIOCHEMISTRY （ 影响因子：6.1； 五年影响因子：6.2 ）
ISSN： 0981-9428
年卷期： 2024 年 210 卷
页码：
收录情况： SCI
摘要： Drought priming is known to enhance plant low temperature tolerance, whereas polystyrene nanoplastic contamination exerts detrimental effects on plant growth. This study investigates the less-explored influence of nanoplastic contamination on cold stress tolerance in drought-primed plants. We compared the photosynthetic carbon assimilation, carbohydrate metabolism, reactive oxygen species metabolism, and grain yield between the non-primed and drought-primed wheat grown in both nanoplastic-contaminated and healthy soils. Our results reveal that the beneficial effects of drought priming on photosynthetic carbon assimilation and the efficiency of the "water-water" cycle were compromised in the presence of nanoplastics (nPS). Additionally, nPS exposure disturbed carbohydrate metabolism, which impeded source-to-sink transport of sugar and resulted in reduced grain yield in drought-primed plants under low temperature conditions. These findings unveil the suppression of nPS on drought-primed low-temperature tolerance (DPLT) in wheat plants, suggesting an intricate interplay between the induction of stress tolerance and responses to nPS contamination. The study raises awareness about a potential challenge for future crop production.
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