Polystyrene nanoplastics in soil impair drought priming-induced low temperature tolerance in wheat

文献类型： 外文期刊

第一作者： Wang, Ling

作者： Wang, Ling;Sui, Yuting;Zhang, Peng;Li, Shuxin;Liu, Tianhao;Li, Xiangnan;Wang, Ling;Li, Shuxin;Li, Xiangnan;Wang, Zongshuai

作者机构：

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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