|
| Effects of foliar application of selenium on cadmium accumulation in purple wheat |
| Received:September 01, 2022 |
| View Full Text View/Add Comment Download reader |
| KeyWord:foliar application;cadmium accumulation;sodium selenite;purple wheat;subcellular distribution |
| Author Name | Affiliation | E-mail | | YU Linke | College of Environmental Sciences, Sichuan Agricultural University, Chengdu 611130, China | | | YANG Xinyue | College of Environmental Sciences, Sichuan Agricultural University, Chengdu 611130, China | | | XU Xiaoxun | College of Environmental Sciences, Sichuan Agricultural University, Chengdu 611130, China
Key Laboratory of Soil Environment Protection of Sichuan Province, Chengdu 611130, China | xuxiaoxun2013@163.com | | WANG Guiyin | College of Environmental Sciences, Sichuan Agricultural University, Chengdu 611130, China
Key Laboratory of Soil Environment Protection of Sichuan Province, Chengdu 611130, China | | | YANG Zhanbiao | College of Environmental Sciences, Sichuan Agricultural University, Chengdu 611130, China | | | ZHANG Shirong | College of Environmental Sciences, Sichuan Agricultural University, Chengdu 611130, China
1. College of Environmental Sciences, Sichuan Agricultural University, Chengdu 611130, China | |
|
| Hits: 1610 |
| Download times: 2122 |
| Abstract: |
| Due to the large area of cadmium（Cd） contaminated agricultural soils, convenient operation, high efficiency, and environmentally friendly methods for safe food production are necessary. In the current study, a field experiment was conducted to determine the effects of foliar spraying of sodium selenite（Na2SeO3）on Cd concentration in four purple wheat varieties. Furthermore, the enrichment and subcellular distribution characteristics of Cd in plants were investigated. The results showed that the Cd concentration of all wheat organs decreased after the supply of Na2SeO3, and the bioconcentration factor was significantly lower（P<0.05）than that in the control treatment. When the concentration of Na2SeO3 was 0.8 mmol·L-1, the Cd concentration of wheat grains decreased by 47%–63%, compared with the control treatment. In addition, the translocation factor of Cd from the stem to the grain and the leaf to the grain of four wheat varieties significantly decreased（P<0.05）by 22%–46% and 34%–61%, respectively. The concentration of Cd in the subcellular fractions of the plants was in the order of soluble fraction>cell wall>organelle fraction. Application of Na2SeO3 reduced the Cd concentration in each subcellular fraction of wheat plants, and increased the proportion of Cd in the soluble fractions of roots and leaves. These results suggest that foliar spraying of Na2SeO3 could enhance the compartmentalization of Cd in purple wheat, inhibit its transport to grains, and induce its concentration in grains to meet the requirements of the National Standard for Food Safety–Limits of Contaminants in Foods （GB 2762—2017） |
|
|
|
