Nutritional and Structural Role of Silicon in Attenuating Aluminum Toxicity in Sugarcane Plants
| Autor: | Renato de Mello Prado, Durvalina Maria Mathias dos Santos, Jonas Pereira de Souza Junior, Gilmar da Silveira Sousa Junior, Alexander Calero Hurtado |
|---|---|
| Přispěvatelé: | Universidade Estadual Paulista (UNESP) |
| Rok vydání: | 2021 |
| Předmět: |
Silicon
Growth medium Saccharum officinarum Materials science fungi food and beverages Factorial experiment Abiotic stress Electronic Optical and Magnetic Materials chemistry.chemical_compound Horticulture Human fertilization chemistry Toxicity Shoot Lignin Macronutrients Micronutrients Cultivar Potassium silicate |
| Zdroj: | Scopus Repositório Institucional da UNESP Universidade Estadual Paulista (UNESP) instacron:UNESP |
| ISSN: | 1876-9918 1876-990X |
| Popis: | Made available in DSpace on 2022-04-29T08:31:31Z (GMT). No. of bitstreams: 0 Previous issue date: 2021-01-01 Purpose: We investigated the interactive role of Si-mediated attenuation to aluminum (Al) toxicity in two sugarcane cultivars (‘CTC9002’ and ‘CTC9003’) grown in hydroponic conditions. Methods: Two pot experiments were distributed in randomized blocks in a factorial design (4 × 2) with four replications. The treatments consisted of 0, 10, 15, and 20 mg L−1 Al (as aluminum sulfate [Al2 (SO4)3·18H2O)], which were combined with the absence and presence of Si [(2.0 mmol L−1 as potassium silicate (K2SiO3)]. Results: Both sugarcane cultivars (‘CTC9002’ and ‘CTC9003’) were affected by Al toxicity (above 10 mg L−1), resulting in nutritional disorders and decreasing plant growth, which were drastically reversed by Si addition in the growth medium. Si supplementation decrease Al concentration and translocation to the shoots of both cultivars when Al and Si were simultaneously supplied in the growth medium. We demonstrated that in shoots of both sugarcane seedlings, Si concentration are positively related to the lignin concentrations (ranging from 12.0% to 41% in cv. ‘CTC9002’ and 12% to 47% in cv. ‘CTC9003’). In addition, Si fertilization enhanced mineral nutrition and use efficiency of macros- and micronutrients, irrespective of the cultivar. Therefore, the use of cultivar ‘CTC9003’ under Si fertilization is more recommended to cope with the adverse effect caused by Al stress. Conclusions: The findings of this study suggest that Si fertilization in sugarcane seedlings is an economic and viable strategy strongly recommended to cope with the adverse effect caused by Al toxicity at concentrations less than 20 mg L−1, which lead to increase the shoot biomass production. Department of Biology Applied to Agriculture School of Agricultural and Veterinarian Sciences São Paulo State University (UNESP), Via de acesso Prof. Paulo Donato Castellane s/n, P. C. 14884-900, Jaboticabal Department of Agricultural Sciences – Soil and Fertilizer Sector. School of Agricultural and Veterinarian Sciences São Paulo State University (UNESP), Via de acesso Prof. Paulo Donato Castellane s/n, P. C. 14884-900, Jaboticabal Department of Biology Applied to Agriculture School of Agricultural and Veterinarian Sciences São Paulo State University (UNESP), Via de acesso Prof. Paulo Donato Castellane s/n, P. C. 14884-900, Jaboticabal Department of Agricultural Sciences – Soil and Fertilizer Sector. School of Agricultural and Veterinarian Sciences São Paulo State University (UNESP), Via de acesso Prof. Paulo Donato Castellane s/n, P. C. 14884-900, Jaboticabal |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full text from SpringerLink