Yong, Jean W.H
- Department of Biosystems and Technology, Swedish University of Agricultural Sciences
Research article2023Peer reviewedOpen access
Jalil, Sanaullah; Nazir, Muhammad Mudassir; AL-Huqail, Arwa Abdulkreem; Ali, Baber; Al-Qthanin, Rahmah N.; Asad, Muhammad A. U.; Eweda, Mohamed A.; Zulfiqar, Faisal; Onursal, Nilguen; Masood, Hafiza Ayesha; Yong, Jean Wan Hong; Jin, Xiaoli
This study investigated the physiological and molecular responses of rice genotype '9311' to Cd stress and the mitigating effects of silicon oxide nanoparticles (SiO NPs). Cd exposure severely hindered plant growth, chlorophyll content, photosynthesis, and Cd accumulation. However, SiO NPs supplementation, particularly the SiONP100 treatment, significantly alleviated Cd-induced toxicity, mitigating the adverse effects on plant growth while maintaining chlorophyll content and photosynthetic attributes. The SiONP100 treatment also reduced Cd accumulation, indicating a preference for Si uptake in genotype 9311. Complex interactions among Cd, Si, Mg, Ca, and K were uncovered, with fluctuations in MDA and H2O2 contents. Distinct morphological changes in stomatal aperture and mesophyll cell structures were observed, including changes in starch granules, grana thylakoids, and osmophilic plastoglobuli. Moreover, following SiONP100 supplementation, genotype 9311 increased peroxidase, superoxide dismutase, and catalase activities by 56%, 44%, and 53% in shoots and 62%, 49%, and 65% in roots, respectively, indicating a robust defense mechanism against Cd stress. Notably, OsNramp5, OsHMA3, OsSOD-Cu/Zn, OsCATA, OsCATB, and OsAPX1 showed significant expression after SiO NPs treatment, suggesting potential Cd translocation within rice tissues. Overall, SiO NPs supplementation holds promise for enhancing Cd tolerance in rice plants while maintaining essential physiological functions.
Antioxidants; Cadmium; Genetic mechanism; Rice; Sustainable agriculture; Silicon
Ecotoxicology and Environmental Safety
2023, Volume: 268, article number: 115699
Ensure availability and sustainable management of water and sanitation for all
Make cities and human settlements inclusive, safe, resilient and sustainable
End hunger, achieve food security and improved nutrition and promote sustainable agriculture
Environmental Sciences
Agricultural Science
DOI: https://doi.org/10.1016/j.ecoenv.2023.115699
https://res.slu.se/id/publ/126767