The Ameliorative Effect of Silicon on Maize Plants Grown in Mg-Deficient Conditions
| Autor: | Seyed Abdollah Hosseini, Nusrat Ali, Sara Naseri Rad, Jean-Claude Yvin |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2019 |
| Předmět: |
Chlorophyll
0106 biological sciences 0301 basic medicine Transcription Genetic Mineral deficiency Plant Roots 01 natural sciences lcsh:Chemistry chemistry.chemical_compound Plant Growth Regulators Gene Expression Regulation Plant Magnesium Biomass Food science Amino Acids assimilate partitioning lcsh:QH301-705.5 Spectroscopy Plant Proteins chemistry.chemical_classification Jasmonic acid food and beverages General Medicine Computer Science Applications Amino acid Cytokinin Metabolome Plant Shoots hormonal regulation Silicon Cyclopentanes Zea mays Article Catalysis Inorganic Chemistry 03 medical and health sciences primary metabolite medicine Oxylipins Physical and Theoretical Chemistry Molecular Biology Organic Chemistry fungi Primary metabolite medicine.disease Biosynthetic Pathways stomatognathic diseases 030104 developmental biology chemistry lcsh:Biology (General) lcsh:QD1-999 Glycine Putrescine mineral deficiency 010606 plant biology & botany |
| Zdroj: | International Journal of Molecular Sciences, Vol 20, Iss 4, p 969 (2019) International Journal of Molecular Sciences Volume 20 Issue 4 |
| ISSN: | 1422-0067 |
| Popis: | The importance of magnesium (Mg) for plant growth is well-documented. Silicon (Si)-mediated alleviation of mineral deficiencies has been also reported in a number of plant species however, there is no report on the relevance of Si nutrition in plants grown in Mg-deficient condition. Therefore, in the present work, an attempt was undertaken to study the role of Si nutrition in maize plants exposed to Mg deficiency. Plants were grown either under low (0.02 mM) or normal (0.5 mM) levels of Mg, with or without Si supplement. We have shown that Mg-deficient plants treated with Si maintained their growth and increased significantly the levels of chlorophyll and soluble sugars compared to those plants which did not receive Si. In addition, the concentrations of hexose-P, and glycolytic intermediate metabolites&mdash mainly organic acids (isocitric and glutamic acids)&mdash were increased in response to Si nutrition, which was associated with an increase in the levels of stress amino acids such as gamma-aminobutyric-acid (GABA), serine and glycine, as well as polyamines putrescine, which overall contributed to Mg stress tolerance. In addition, Si enhanced the levels of phytohormones cytokinin iso-pentenyladenine (IP), iso-pentenyladenine riboside (IPR), jasmonic acid (JA) and its derivate l-isoleucine (JA-ILE). The increase in cytokinin maintained the growth of Mg-deficient plants, while JA and JA-IEA were induced in response to carbohydrates accumulation. Altogether, our study reveals the vital role of Si under Mg deficiency by regulating plant primary metabolite and hormonal changes. |
| Databáze: | OpenAIRE |
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