文献类型：期刊文献

英文题名：Mechanism of microplastics in the reduction of cadmium toxicity in tomato

作者：Yang, Rongchao[1];Cheng, Long[1];Li, Zhenqin[1];Cui, Yilan[1];Liu, Jiawei[1];Xu, Duo[1];Liu, Sijia[1];Lin, Zhong[2];Chen, Jiugeng[3];Zhang, Yueqin[1]

机构：[1]Guangdong Ocean Univ, Coll Coastal Agr Sci, Zhanjiang 524088, Peoples R China;[2]Guangdong Ocean Univ, Sch Chem & Environm, Zhanjiang 524088, Peoples R China;[3]Shanghai Jiao Tong Univ, Instrumental Anal Ctr, Shanghai 200030, Peoples R China

年份：2025

卷号：289

外文期刊名：ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY

收录：SCI-EXPANDED(收录号：WOS:001397349700001)、、Scopus(收录号：2-s2.0-85213850960)、WOS

基金：This work was funded by the National Natural Science Foundation of China (No. 32370359) .

语种：英文

外文关键词：Microplastics; Cd; Combined stress; Ionome; Transcriptome

外文摘要：Soil pollution by microplastics (MPs) and cadmium (Cd) poses significant threats to agricultural production, yet their combined toxicity and underlying mechanisms remain poorly understood. Here, we examined the effects of three types of MPs-polyethylene (PE), polyvinyl chloride (PVC) and polypropylene (PP)-with particle sizes of 150 mu m and 10 mu m, in combination with Cd stress (5 mg/kg) on tomato (Solanum lycopersicum L.) growth. The results revealed that the combined treatment of MPs effectively alleviated the inhibitory effect of Cd stress. Moreover, Ionome analysis demonstrated that the combined treatment alleviated ionic toxicity by reducing the accumulation of heavy metals (e.g., Al, Pb, Cd, Cr), restoring the uptake of essential elements (e.g., Mg, Ca, Mn), and minimizing the excessive absorption of trace elements (e.g., Mo, Ni) and ultra-trace elements (e.g., Co, Ag, Sn) compared to Cd stress alone. Transcriptome analysis further revealed that combined treatment reprogrammed key pathways, including cell wall synthesis, antioxidant systems, Cd transport, hormone signaling, nitrogen metabolism, and glutathione metabolism, to alleviate Cd toxicity. This study provides novel insights into the interaction between MPs and environmental pollutants, highlighting their role in modulating plant stress responses.