Foliar application of selenium nanoparticles alleviates cadmium toxicity in maize (Zea mays L.) seedlings: Evidence on antioxidant, gene expression, and metabolomics analysis
文献类型： 外文期刊
作者： Wang, Min 1 ; Mu, Chunyi 1 ; Li, Yuliang 1 ; Wang, Yixuan 1 ; Ma, Wenyan 1 ; Ge, Chenghao 1 ; Cheng, Cheng 1 ; Shi, Gaoling 3 ; Li, Hongbo 1 ; Zhou, Dongmei 1 ;
作者机构： 1.Nanjing Univ, Sch Environm, State Key Lab Pollut Control & Resource Reuse, Nanjing 210023, Jiangsu, Peoples R China
2.Nanjing Univ Informat Sci & Technol, Sch Appl Meteorol, Nanjing 210044, Peoples R China
3.Jiangsu Acad Agr Sci, Inst Agr Resources & Environm, Nanjing 210014, Peoples R China
关键词： Cadmium; Foliar application; Metabolic responses; Selenium nanoparticles; Transporter genes
期刊名称：SCIENCE OF THE TOTAL ENVIRONMENT （ 影响因子：9.8； 五年影响因子：9.6 ）
ISSN： 0048-9697
年卷期： 2023 年 899 卷
页码：
收录情况： SCI
摘要： The molecular and metabolic mechanisms of foliar selenium (Se) nanoparticles (SeNPs) application in mitigating cadmium (Cd) toxicity in crops have not been well studied. Herein, hydroponically cultured maize seedlings were exposed to Cd (20 & mu;M) and treated without and with foliar SeNPs application. Effects of SeNPs on Cd transporter genes and plant metabolism were also explored. Results showed that compared to control plants without Cd exposure, Cd exposure decreased shoot height (16.8 %), root length (17.7 %), and fresh weight of root (24.2 %), stem (28.8 %), and foliar-applied leaves (Se-leaves) (15.0 %) via oxidative damage. Compared to Cd exposure alone, foliar SeNPs application at 20 mg/L (0.25 mg/plant) significantly alleviated the Cd toxicity by promoting photosynthesis and antioxidant capacity and fixing Cd in cell wall. Meanwhile, the mineral concentration of Ca (26.0 %), Fe (55.4 %), Mg (27.0 %), Na (28.6 %), and Zn (10.1 %) in Se-leaves was improved via foliar SeNPs application at 20 mg/L. QRT-PCR analysis further revealed that down- and up-regulation of the expression of ZmHMA2 and ZmHMA3 gene in Se-leaves contributed to reduced translocation of Cd in plants and enhanced Cd sequestration in the vacuole, respectively. Metabolomic results further indicated that metabolic pathways including carbohydrate metabolism, membrane transport, translation, amino acid metabolism, and energy metabolism were significantly affected by foliar SeNPs application. In conclusion, foliar SeNPs application at 20 mg/L could be a prospective strategy to mitigate Cd toxicity in maize.
- 相关文献
作者其他论文 更多>>
-
Control locations confuse evaluation of passivation effects of iron-based biochar and selenium applications on wheat grain cadmium accumulation in a Cd-contaminated weakly alkaline soil
作者：Jing, Feng;Li, Hongbo;Zhou, Dongmei;Gao, Yan;Fan, Guangping;Zhang, Qingya;Gao, Xuezhen
关键词：field experiment; foliar Se application; Se accumulation; soil Cd heterogeneity; toxic metal; wheat Cd
-
Sulfhydryl Grafted Palygorskite can Efficiently and Stably Immobilize Cd in Calcareous Soil and Inhibit Cd Accumulation in Wheat in the Second Year
作者：Wang, Yale;Hou, Kaihui;Jiang, Junxiao;Wang, Yali;Xu, Chunhong;Zhao, Qing;Yang, Yongqiang;Li, Liping;Shi, Gaoling;Xu, Yingming
关键词：Wheat; Sulfhydryl grafted palygorskite; Cd-contaminated calcareous soils; Freeze-thaw cycles; Immobilization stability
-
Mn-doped cerium dioxide nanozyme mediates ROS homeostasis and hormone metabolic network to promote wheat germination under low-temperature conditions
作者：Wu, Yixin;Xu, Shen;Sun, Mengqing;Liu, Lizhu;Shi, Gaoling;Gao, Yan;Wu, Yixin;Xu, Shen;Sun, Mengqing;Liu, Lizhu;Shi, Gaoling;Gao, Yan;Wei, Hui;Muhammad, Faheem;Muhammad, Faheem
关键词：Wheat; Nanozyme; Seed priming; Cold tolerance; Hormone metabolic
-
The role of symbiotic nitrogen-fixing bacteria, Rhizobium and Sinorhizobium, as "bridges" in the rhizosphere of legumes after fomesafen application
作者：Chen, Wei;Li, Yuntao;Shi, Gaoling;Fan, Guangping;Tong, Fei;Liu, Lizhu;Li, Jiangye;Gao, Yan;Chen, Wei;Li, Yuntao;Shi, Gaoling;Fan, Guangping;Tong, Fei;Liu, Lizhu;Li, Jiangye;Gao, Yan;Chen, Wei;Li, Yuntao;Fan, Guangping;Tong, Fei;Gao, Yan;Shi, Gaoling;Gao, Yan
关键词：Legumes; Nitrogen-fixing microbes; Rhizospheric network; Symbiotic nitrogen-fixing bacteria; Root characteristics
-
Nanostructured hydroxyapatite-zinc complex as a novel foliar system to reduce cadmium accumulation in wheat grain: Performance and mechanism
作者：Shi, Gaoling;Yi, Chao;Zhou, Huimin;Fan, Guangping;Tong, Fei;Chen, Wei;Liu, Lizhu;Li, Jiangye;Gao, Yan;Shi, Gaoling;Zhou, Huimin;Fan, Guangping;Tong, Fei;Chen, Wei;Liu, Lizhu;Li, Jiangye;Gao, Yan;Shi, Gaoling;Yi, Chao;Chen, Yinglong;Chen, Yinglong;Zhou, Dongmei
关键词：Cadmium; Wheat; Foliar zinc; Nanocarrier; Gene regulation; Sustainable production
-
Unlocking nature's cold defense: Silkworm sand-derived ICE6 boosts pepper resilience through antioxidant activation and gene regulation
作者：Zhai, Xinyu;Jiu, Min;Zhai, Xinyu;Li, Mengnan;Xu, Miaomiao;Wei, Lihui;Zhou, Dongmei;Li, Mengnan;Le, Xiuhu
关键词：Iron chlorine E6; Pepper; Low temperature stress; Cold-responsive genes; Antioxidase
-
Wheat tends to accumulate higher levels of cadmium in the grains than rice under a wide range of soil pH and Cd concentrations: A field study on rice-wheat rotation farmland
作者：Li, Yuntao;Fan, Guangping;Gao, Yan;Chen, Wei;Shi, Gaoling;Tong, Fei;Liu, Lizhu;Li, Yuntao;Fan, Guangping;Gao, Yan;Chen, Wei;Shi, Gaoling;Tong, Fei;Liu, Lizhu;Zhou, Dongmei
关键词：Wheat; Cadmium; Threshold value; Cd average daily dose; Potentially tolerable daily intake
