Effect of Different Foliar Silicon Sources on Cotton Plants

Souza, Jonás Pereira de; Prado, Renato de Mello; Soares, Mariana Bomfim; Silva, José Lucas Farias da; Guedes, Victor Hugo de Farias; Sarah, Marcilene Machado dos Santos; Cazetta, Jairo Osvaldo

doi:10.1007/s42729-020-00345-4

Cited by 26 publications

(7 citation statements)

References 38 publications

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“…In addition to Si taken up by roots, Si fertilizer can also be efficiently supplied to leaves to increase plant dry matter production 14 – 17 and is absorbed mainly via cuticular pathways, stomata, and trichomes 18 . Foliar application of Si-containing solutions is a viable alternative Si fertilization method to increase Si accumulation, especially for intermediate and Si nonaccumulator plants 15 , 16 , 19 , 20 .…”

Section: Introductionmentioning

confidence: 99%

Functions of silicon in plant drought stress responses

Wang

Mur

et al. 2021

Hortic Res

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Silicon (Si), the second most abundant element in Earth’s crust, exerts beneficial effects on the growth and productivity of a variety of plant species under various environmental conditions. However, the benefits of Si and its importance to plants are controversial due to differences among the species, genotypes, and the environmental conditions. Although Si has been widely reported to alleviate plant drought stress in both the Si-accumulating and nonaccumulating plants, the underlying mechanisms through which Si improves plant water status and maintains water balance remain unclear. The aim of this review is to summarize the morphoanatomical, physiological, biochemical, and molecular processes that are involved in plant water status that are regulated by Si in response to drought stress, especially the integrated modulation of Si-triggered drought stress responses in Si accumulators and intermediate- and excluder-type plants. The key mechanisms influencing the ability of Si to mitigate the effects of drought stress include enhancing water uptake and transport, regulating stomatal behavior and transpirational water loss, accumulating solutes and osmoregulatory substances, and inducing plant defense- associated with signaling events, consequently maintaining whole-plant water balance. This study evaluates the ability of Si to maintain water balance under drought stress conditions and suggests future research that is needed to implement the use of Si in agriculture. Considering the complex relationships between Si and different plant species, genotypes, and the environment, detailed studies are needed to understand the interactions between Si and plant responses under stress conditions.

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Section: Introductionmentioning

confidence: 99%

Functions of silicon in plant drought stress responses

Wang

Mur

et al. 2021

Hortic Res

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“…This reduction as a function of salinity is an indicator that the solar light absorbed was not converted into photochemical energy and was possibly dissipated as heat (Najar et al, 2018). On the other hand, the positive effect with the increase in the concentrations occurred because these nutrients contribute to energy storage, enzyme activation, and the increase of photosynthetic capacity (Souza Junior et al, 2020). Leaf temperature increased linearly with the increase in potassium silicate concentrations (Figure 3C).…”

Section: Resultsmentioning

confidence: 99%

“…It can be deduced that water salinity did not cause photoinhibition and, consequently, did not limit carbon fixation in cashew plants. Moreover, the application of potassium silicate induced the electron transport rate, which may be related to the maintenance of the photosynthetic apparatus provided by the double silicon layer in the leaves and the metabolic activity of potassium, thus maintaining the high efficiency of the photochemical activity in the plant (Santos et al, 2020;Souza Junior et al, 2020). The plants cultivated under the potassium silicate concentrations of 0 and 250 mg L -1 showed an increase in QL up to the estimated ECw levels of 1.36 and 1.87 dS m -1 , respectively (Figure 2B).…”

Section: Resultsmentioning

confidence: 99%

“…As an alternative, silicon (Si) minimizes the harmful effects of salt excess on plants (Souza Junior et al, 2020), acting indirectly on several physiological and biochemical aspects, e.g., chlorophyll index, dissipation of light energy, and transpiration flow, in addition to being related to the activity of antioxidant enzymes (Tatagiba., 2017;Santos et al, 2020). Another element that has stood out in this regard is potassium, which acts on enzyme activation, photosynthesis, water-use efficiency, and the synthesis of starch and proteins (Khanghahi et al, 2019).…”

Section: Introductionmentioning

confidence: 99%

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Eficiência fotoquímica de porta-enxertos de cajueiro sob estresse salino e aplicação foliar de silicato de potássio

Fátima

Nobre²,

Lima³

et al. 2022

Com. Sci.

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O cajueiro é uma das frutíferas de maior importância econômica no Brasil, especialmente na região Nordeste. Porém, fatores abióticos como a salinidade da água e dos solos dessa região destaca-se como fator limitante para essa cultura, afetando em todas as fases de desenvolvimento, bem como nos processos fisiológicos e bioquímicos. Diante disso, o uso de produtos que amenize tais danos, torna-se necessário, tendo no silício e potássio uma alternativa viável. Assim, o objetivo deste trabalho foi avaliar a eficiência fotoquímica de porta-enxerto de cajueiro submetido à salinidade da água e aplicação de silicato de potássio foliar. Utilizou-se o delineamento de blocos casualizados, distribuído em esquema fatorial 5x5, com quatro repetições e duas plantas por parcela, sendo os tratamentos por condutividade da água de irrigação - CEa (0,3, 1, 1,7, 2,4 e 3,1 dS m-1) e concentrações de silicato de potássio (0, 250, 500, 750 e 1000 mg L-1) aplicadas via foliar. A salinidade da água de irrigação ocasiona reduções na eficiência fotoquímica do fotossistema II e consequentemente, no aparato fotossintético de plantas de cajueiro, aos 70 dias após a semeadura. A concentração de 250 mg L-1 de silicato de potássio promove aumento no rendimento quântico de plantas de cajueiro em condições de estresse salino.

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“…It was evident that even at the high B concentration (2.5 g L −1 ), a maximum of 1.00 g L −1 of Si can be added to the B solution without signi cant polymerization. The stability of this silicon solution is partially explained by the stabilizing effect of sorbitol present in the product to guarantee successful Si foliar application [23]. This is because adding stabilizers is an e cient alternative to reduce polymerization of the silicon solution, thereby increasing Si leaf absorption in several crops [7,24,25], including cotton plants [17,23].…”

Section: Discussionmentioning

confidence: 99%

Addition of silicon to boron foliar spray in cotton plants modulates the antioxidative system attenuating boron deficiency and toxicity

Souza

Prado

Campos

et al. 2022

Preprint

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Background: Boron (B) nutritional disorders, either deficiency or toxicity, may lead to an increase in reactive oxygen species production, causing damage to cells. Oxidative damage in leaves can be attenuated by supplying silicon (Si). The aim of this study was to assess assess the effect of increasing foliar B concentrations on cotton plants to determine whether adding Si to the spray solution promotes gains to correct deficiency and toxicity of this micronutrient by decreasing oxidative stress via synthetizing proline and glycine-betaine, thereby raising dry matter production.Results:B deficiency or toxicity increased H2O2 and MDA leaf content in cotton plants. H2O2 and MDA leaf content declined as a function of increased leaf B concentrations in the presence and absence of Si. B deficiency stood out in H2O2 and MDA production compared to its toxicity. Proline and glycine-betaine content declined as a function of the rise in B concentration. In addition, production of these nonenzymatic antioxidant compounds was greater in plants under toxicity, in relation to deficient plants. Adding Si to the B spray solution reduced H2O2 and MDA content in the plants under nutrient deficiency or toxicity. Si reduced H2O2, primarily in B-deficient plants. Si also increased proline and glycine-betaine content, mainly in plants under B toxicity. Dry matter production of B-deficient cotton plants increased up to an application of 1.2 g L-1 of B. The critical B level in the spray solution for deficiency and toxicity was observed at a concentration of 0.5 and 1.9 g L-1 of B, respectively, in the presence of Si, and 0.4 and 1.9 g L-1 of B without it. In addition, the presence of Si in the B solution raised dry matter production in all B concentrations evaluated in this study.Conclusion:Our findings demonstrated that adding Si to a B solution is important in the foliar spraying of cotton plants because it increases proline and glycine-betaine production and reduces H2O2 and MDA content, in addition to mitigating the oxidative stress in cotton plants under B deficiency or toxicity.

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Effect of Different Foliar Silicon Sources on Cotton Plants

Cited by 26 publications

References 38 publications

Functions of silicon in plant drought stress responses

Functions of silicon in plant drought stress responses

Eficiência fotoquímica de porta-enxertos de cajueiro sob estresse salino e aplicação foliar de silicato de potássio

Addition of silicon to boron foliar spray in cotton plants modulates the antioxidative system attenuating boron deficiency and toxicity

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