Physiological of biochar and alpha-Fe2O3 nanoparticles as amendments of Cd accumulation and toxicity toward muskmelon grown in pots

文献类型： 外文期刊

第一作者： Wang, Yunqiang

作者： Wang, Yunqiang;Yi, Licong;Dai, Zhaoyi;Zou, Zhengkang;Su, Xinliang;Wan, Fengting;Zhou, Ying;Lei, Zhen;Li, Junli;Wang, Yunqiang;Yi, Licong;Dai, Zhaoyi

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关键词： Cd; Muskmelon; Biochar; alpha-Fe2O3 NPs; Toxicity; Differentially expressed genes

期刊名称：JOURNAL OF NANOBIOTECHNOLOGY （ 影响因子：9.429； 五年影响因子：11.509 ）

ISSN：

年卷期： 2021 年 19 卷 1 期

页码：

收录情况： SCI

摘要： Background Due to the severe cadmium (Cd) pollution of farmland soil, effective measures need to be taken to reduce the Cd content in agricultural products. In this study, we added alpha-Fe2O3 nanoparticles (NPs) and biochar into Cd-contaminated soil to investigate physiological responses of muskmelon in the whole life cycle. Results The results showed that Cd caused adverse impacts on muskmelon (Cucumis melo) plants. For instance, the chlorophyll of muskmelon leaves in the Cd alone treatment was reduced by 8.07-32.34% in the four periods, relative to the control. The treatments with single amendment, alpha-Fe2O3 NPs or 1% biochar or 5% biochar, significantly reduced the soil available Cd content, but the co-exposure treatments (alpha-Fe2O3 NPs and biochar) had no impact on the soil available Cd content. All treatments could reduce the Cd content by 47.64-74.60% and increase the Fe content by 15.15-95.27% in fruits as compared to the Cd alone treatment. The KEGG enrichment results of different genes in different treatments indicated that single treatments could regulate genes related to anthocyanin biosynthesis, glutathione metabolism and MAPK signal transduction pathways to reduce the Cd toxicity. Conclusions Overall the combination of biochar and alpha-Fe2O3 NPs can alleviate Cd toxicity in muskmelon. The present study could provide new insights into Cd remediation in soil using alpha-Fe2O3 NPs and biochar as amendments. Graphic Abstract

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