Academic Journal
Effect of silicon spraying on rice photosynthesis and antioxidant defense system on cadmium accumulation
| Title: | Effect of silicon spraying on rice photosynthesis and antioxidant defense system on cadmium accumulation |
|---|---|
| Authors: | Hongxing Chen, Xiaoyun Huang, Hui Chen, Song Zhang, Chengwu Fan, Tianling Fu, Tengbing He, Zhenran Gao |
| Source: | Scientific Reports, Vol 14, Iss 1, Pp 1-11 (2024) |
| Publisher Information: | Nature Portfolio, 2024. |
| Publication Year: | 2024 |
| Collection: | LCC:Medicine LCC:Science |
| Subject Terms: | Rice, Cd, Si, Photosynthesis, Antioxidant defense system, Medicine, Science |
| More Details: | Abstract Cadmium (Cd) pollution is a serious threat to food safety and human health. Minimizing Cd uptake and enhancing Cd tolerance in plants are vital to improve crop yield and reduce hazardous effects to humans. In this study, we designed three Cd concentration stress treatments (Cd1: 0.20 mg·kg−1, Cd2: 0.60 mg·kg−1, and Cd3: 1.60 mg·kg−1) and two foliar silicon (Si) treatments (CK: no spraying of any material, and Si: foliar Si spraying) to conduct pot experiments on soil Cd stress. The results showed that spraying Si on the leaves reduced the Cd content in brown rice by 4.79–42.14%. Si application increased net photosynthetic rate (Pn) by 1.77–4.08%, stomatal conductance (Gs) by 5.27–23.43%, transpiration rate (Tr) by 2.99–20.50% and intercellular carbon dioxide (CO2) concentration (Ci) by 6.55–8.84%. Foliar spraying of Si significantly increased the activities of superoxide dismutase (SOD) and peroxidase (POD) in rice leaves by 9.84–14.09% and 4.69–53.09%, respectively, and reduced the content of malondialdehyde (MDA) by 7.83–48.72%. In summary, foliar Si spraying protects the photosynthesis and antioxidant system of rice canopy leaves, and is an effective method to reduce the Cd content in brown rice. |
| Document Type: | article |
| File Description: | electronic resource |
| Language: | English |
| ISSN: | 2045-2322 |
| Relation: | https://doaj.org/toc/2045-2322 |
| DOI: | 10.1038/s41598-024-66204-9 |
| Access URL: | https://doaj.org/article/d0c21b9523f44f0e984fa3b4eea4822a |
| Accession Number: | edsdoj.0c21b9523f44f0e984fa3b4eea4822a |
| Database: | Directory of Open Access Journals |
| Full text is not displayed to guests. | Login for full access. |
| ISSN: | 20452322 |
|---|---|
| DOI: | 10.1038/s41598-024-66204-9 |
| Published in: | Scientific Reports |
| Language: | English |