Analyzing the Role of Silicon in Leaf C:N:P Stoichiometry and Its Effects on Nutritional Efficiency and Dry Weight Production in Two Sugarcane Cultivars

Souza, Jonás Pereira de; Oliveira, Tainara Lopes de; Prado, Renato de Mello; Oliveira, Kevein Ruas; Soares, Mariana Bomfim

doi:10.1007/s42729-022-00836-6

Cited by 7 publications

(7 citation statements)

References 40 publications

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“…In a recent study, Frazão et al 18 and Souza Junior et al 20 observed a decrease in C concentration in different sugarcane tissues as the Si supply increased, with a subsequent reduction in C:Si, C:N, and C:P ratios, as also observed in this study (Fig. 3 a,b,c).…”

Section: Discussionsupporting

confidence: 89%

“…In addition, Hu et al 59 verified that Si can increase carbon content in canola plants. Nonetheless, some recent studies show that Si has physiological benefits and can modifies the stoichiometry C:N:P in plants under no stress conditions, such as sugarcane 18 , 20 , in quinoa 29 and grassland 28 . In addition, Costa et al 32 , in a recent study on the impact of Si on C, N and P stoichiometric homeostasis in sugarcane, verified that Si can change in the stoichiometric ratio C:N:P even in plants under ideal cultivation condition.…”

Section: Discussionmentioning

confidence: 99%

“…On the other hand, silicon uptake and deposition appear to be associated with the formation of new siliceous valves just prior to cell division, and thus mainly seem to be confirmed to the periods between cytokinesis and daughter cell separation 27 . The variation in the Si/C, observed in some early studies 18 , 20 , 28 , 29 , showed the different regulation mechanisms involved in Si and C metabolism and the uncoupling of Si and C incorporation 30 . In addition Si/C ratio can vary due to abiotic stress 31 , such as drought 32 , 33 , light intensity 34 , 35 , nutritional disorder 35 , 36 , salt stress 37 and temperature 31 .…”

Section: Introductionmentioning

confidence: 95%

“…The structural role played by Si is related to the incorporation of the beneficial element into cell walls, such as opals, which are also called phytoliths (SiO 2 nH 2 O) 8 , 10 . After Si absorption, some of the organic compounds can be replaced by the incorporation of Si in plant tissues, decreasing carbon (C) content and consequently influencing the stoichiometry of C:N:P:Si in different tissues (leaves, stems, and roots), as verified in Phragmites australis 17 , sugarcane 18 – 20 and forages 21 .…”

Section: Introductionmentioning

confidence: 99%

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Silicon modifies C:N:P stoichiometry and improves the physiological efficiency and dry matter mass production of sorghum grown under nutritional sufficiency

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Frazão

Prado

et al. 2022

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Silicon (Si) may be involved in the modification of C:N:P stoichiometry and in physiological processes, increasing sorghum growth and grain production. The objective was to evaluate the effect of Si supply on C:N:P:Si stoichiometry, physiological response, growth, and grain production of sorghum. The experiment was carried out in pots with four concentrations of Si: 0; 1.2; 2.4; and 3.6 mmol L−1 in a completely randomized design, with six replicates. Physiological attributes and dark green color index were measured and grain and biomass production were determined. Posteriorly, the plant material was ground to determine silicon (Si), carbon (C), nitrogen (N), and phosphorus (P) contents in order to analyze C:N:P:Si stoichiometry. C:Si and C:N ratios decreased at all Si concentrations applied (1.2, 2.4, and 3.6 mmol L−1) and in all plant parts studied, being lower at 3.6 mmol L−1. The lowest C:P ratios of leaves and roots were observed at 3.6 mmol L−1 Si and the lowest C:P ratio of stems was observed at 1.2 mmol L−1 Si. Si concentrations were not significant for the N:P ratio of leaves. The highest N:P ratio of stems was observed at 3.6 mmol L−1, while the lowest N:P ratio of roots was observed at 2.4 and 3.6 mmol L−1. Regardless of photosynthetic parameters, the application of 1.2 mmol L−1 Si enhanced photosynthetic rate. The application of 2.4 and 3.6 mmol L−1 enhanced stomatal conductance and dark green color index. The mass of 1000 grains was not influenced by Si applications, while Si applications at all concentrations studied (1.2, 2.4, and 3.6 mmol L−1) enhanced shoot and total dry matter, not affecting root dry matter and grain production. In conclusion, Si supply modifies C:N:P:Si stoichiometry and increases physiologic parameters, growth, development, and grain production in sorghum.

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Section: Discussionsupporting

confidence: 89%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 95%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Silicon modifies C:N:P stoichiometry and improves the physiological efficiency and dry matter mass production of sorghum grown under nutritional sufficiency

Carvalho

Frazão

Prado

et al. 2022

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“…The first studies evaluating the relationships of Si in plant nutrition specifically considering the stoichiometry of C:N:P in sugarcane were carried out by our research group (Genplant) at Universidade Estadual Paulista (São Paulo, Brazil). The starting point was studies evaluating the beneficial effects of Si on elemental stoichiometry at the initial growth phase of pre-sprouted seedlings in sugarcane cultivated up to 30 days [ 13 ] and up to 80 days [ 14 ] in water deficit and in plants grown without stress for 90 days [ 22 ] and 125 days [ 16 ]. However, these studies were carried out using soilless cultivation in sand and nutrient solution, or in only one type of soil (Quartzipsamments).…”

Section: Introductionmentioning

confidence: 99%

New approaches to the effects of Si on sugarcane ratoon under irrigation in Quartzipsamments, Eutrophic Red Oxisol, and Dystrophic Red Oxisol

et al. 2023

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Background C:N:P homeostasis in plants guarantees optimal levels of these nutrients in plant metabolism. H However, one of the causes to the effects of deficit irrigation is the loss of C:N:P homeostasis in leaves and stems that causes reduction in the growth of sugarcane. Being able to measure the impact of water deficit on C:N:P homeostasis in plants from the stoichiometric ratios of the concentrations of these nutrients in leaves and stems. This loss causes a decrease in nutritional efficiency, but can be mitigated with the use of silicon. Silicon favors the homeostasis of these nutrients and crop productivity. The magnitude of this benefit depends on the absorption of Si by the plant and Si availability in the soil, which varies with the type of soil used. Thus, this study aims to evaluate whether the application of Si via fertigation is efficient in increasing the absorption of Si and whether it is capable of modifying the homeostatic balance of C:N:P of the plant, causing an increase in nutritional efficiency and consequently in the production of biomass in leaves and stems of sugarcane ratoon cultivated with deficient and adequate irrigations in different tropical soils. Results Water deficit caused biological losses in concentrations and accumulation of C, N, and P, and reduced the nutrient use efficiency and biomass production of sugarcane plants cultivated in three tropical soils due to disturbances in the stoichiometric homeostasis of C:N:P. The application of Si increased the concentration and accumulation of Si, C, N, and P and their use efficiency and reduced the biological damage caused by water deficit due to the modification of homeostatic balance of C:N:P by ensuring sustainability of the production of sugarcane biomass in tropical soils. However, the intensity of attenuation of such deleterious effects stood out in plants cultivated in Eutrophic Red Oxisols. Si contributed biologically by improving the performance of sugarcane ratoon with an adequate irrigation due to the optimization of stoichiometric ratios of C:N:P; increased the accumulation and the use efficiency of C, N, and P, and promoted production gains in biomass of sugarcane in three tropical soils. Conclusion Our study shows that fertigation with Si can mitigate the deleterious effects of deficient irrigation or potentiate the beneficial effects using an adequate irrigation system due to the induction of a new stoichiometric homeostasis of C:N:P, which in turn improves the nutritional efficiency of sugarcane cultivated in tropical soils.

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Synergy of Selenium and Silicon to Mitigate Abiotic Stresses: a Review

Cunha

Prado

2023

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It is evident the increase in the occurrence of different stresses that impact agriculture and so there has been an increase in research to study stress mitigators including silicon (Si) and selenium (Se). However, the great challenge to be answered would be to assess whether it is possible to maximize these benefits by combining these two elements. Therefore, this review focused on discussing the feasibility of combining Se and Si in mitigating abiotic stresses and also measuring gains in yield and quality of agricultural products. These are the main challenges of plant mineral nutrition with these two elements for sustainable cultivation, ensuring food security with the possibility of improving human health. As the mode of application of an element can change absorption and assimilation processes and consequently the plant’s response, it is important to consider research with supply of these elements via the foliar and root route. Thus, we highlighted the potential of the combined application of Se and Si and whether or not they are relevant to overcome the individual application in stress mitigation or even in plants without stress. In addition, we pointed out new directions for research on this topic in order to reinforce the combined use of stress relievers and their potential benefit to crop plants.

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Analyzing the Role of Silicon in Leaf C:N:P Stoichiometry and Its Effects on Nutritional Efficiency and Dry Weight Production in Two Sugarcane Cultivars

Cited by 7 publications

References 40 publications

Silicon modifies C:N:P stoichiometry and improves the physiological efficiency and dry matter mass production of sorghum grown under nutritional sufficiency

Silicon modifies C:N:P stoichiometry and improves the physiological efficiency and dry matter mass production of sorghum grown under nutritional sufficiency

New approaches to the effects of Si on sugarcane ratoon under irrigation in Quartzipsamments, Eutrophic Red Oxisol, and Dystrophic Red Oxisol

Synergy of Selenium and Silicon to Mitigate Abiotic Stresses: a Review

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