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- Title
Silicon Stimulates Plant Growth and Metabolism in Rice Plants under Conventional and Osmotic Stress Conditions.
- Authors
Ramírez-Olvera, Sara Monzerrat; Trejo-Téllez, Libia Iris; Gómez-Merino, Fernando Carlos; Ruíz-Posadas, Lucero del Mar; Alcántar-González, Ernesto Gabriel; Saucedo-Veloz, Crescenciano
- Abstract
Exogenous silicon (Si) can enhance plant resistance to various abiotic factors causing osmotic stress. The objective of this research was to evaluate the application of 1 and 2 mM Si to plants under normal conditions and under osmotic stress. Morelos A-98 rice seedlings, were treated with 1 and 2 mM SiO2 for 28 d. Subsequently, half of the plants were subjected to osmotic stress with the addition of 10% polyethylene glycol (PEG) 8000; and continued with the addition of Si (0, 1 and 2 mM SiO2) for both conditions. The application of Si under both conditions increased chlorophyll b in leaves, root volume, as well as fresh and dry biomass of roots. Interestingly, the number of tillers, shoot fresh and dry biomass, shoot water content, concentration of total chlorophyll, chlorophyll a/b ratio, and the concentration of total sugars and proline in shoot increased with the addition of Si under osmotic stress conditions. The addition of Si under normal conditions decreased the concentration of sugars in the roots, K and Mn in roots, and increased the concentration of Fe and Zn in shoots. Therefore, Si can be used as a potent inorganic biostimulant in rice Morelos A-98 since it stimulates plant growth and modulates the concentration of vital biomolecules and essential nutrients.
- Subjects
PLANT metabolism; PLANT growth; OSMOREGULATION; POLYETHYLENE glycol; ESSENTIAL nutrients; BIOMASS; MICRONUTRIENTS
- Publication
Plants (2223-7747), 2021, Vol 10, Issue 4, p777
- ISSN
2223-7747
- Publication type
Article
- DOI
10.3390/plants10040777