Potential prophylactic role of silicon against brown rust (Puccinia melanocephala) in sugarcane

Camargo, Mônica Sartori de; Coutinho, Isabel D.; Lourenço, Sílvia; Soares, Marli Kasue Misaki; Colnago, Luiz Alberto; Appezzato‐da‐Glória, Beatriz; Cavalheiro, Alberto José; Amorim, Lílian

doi:10.1007/s10658-020-01982-2

Cited by 10 publications

(11 citation statements)

References 22 publications

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“…Similarly, wheat could be reduced the rice blast intensity by keeping a high foliar Si concentration ( Xavier-Filha et al., 2011 ). This also supports previous reports ( Camargo et al., 2020 ) and several other plants against foliar pathogens ( Fauteux et al., 2005 ; Domiciano et al., 2010 ; Resende et al., 2012 ).…”

Section: Discussionsupporting

confidence: 93%

Silicon improves the photosynthetic performance of oat leaves infected with Puccinia graminis f. sp. avenae

Liu

et al. 2022

Front. Plant Sci.

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Stem rust, caused by Puccinia graminis f. sp. avenae (Pga) is a key disease affecting oat production worldwide. Silicon (Si) plays an essential role in enhancing plant resistance against pathogens. However, the scientific evidence of Si-mediated stem rust resistance of oat from the photosynthetic perspective has not been reported. The specific objective of this research was to investigate the effects of Si application on disease inhibition, photosynthetic gas exchange parameters, light response parameters, photosynthetic pigments and chlorophyll fluorescence parameters under Pga infection. Our results illustrated that Si application significantly reduced rust severity while the other parameters like net photosynthetic rate (Pn), stomatal conductance (Gs), intercellular CO2 concentration (Ci) and transpiration rate (Tr) were significantly increased. Si application increased maximum photosynthetic rate (Pnmax) and light saturation point (LSP), while reduced the dark respiration rate (Rd) and light compensation point (LCP). The results also indicated that Si application significantly increased the activities of maximum fluorescence (Fm), variable fluorescence (Fv), maximum quantum yield of photosystem II (Fv/Fm), photochemical quenching (qP), photosynthetic performance index (PIABS), actual PSII quantum yield (ΦPSII), electron transfer rate (ETR), the absorbed light energy per unit reaction center (ABS/RC) and the dissipated energy per unit reaction center (DIo/RC), whereas it decreased the minimal fluorescence (Fo), non-photochemical quenching (NPQ), the absorbed light energy used for electron transfer per unit reaction center (ETo/RC) and the absorbed light energy used for reduction of QA per unit reaction center (TRo/RC). The contents of chlorophyll a, b and carotenoids were also increased due to the change in the activity of parameters due to Si application as mentioned above. In conclusion, the results of the current study suggests that Si imparts tolerance to the stem rust possibly by the underlying mechanisms of improving gas exchange performance, and efficiency of the photochemical compounds in oat leaves.

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Section: Discussionsupporting

confidence: 93%

Silicon improves the photosynthetic performance of oat leaves infected with Puccinia graminis f. sp. avenae

Liu

et al. 2022

Front. Plant Sci.

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“…The region has an estimated average annual yield of 52 t ha −1 , which is much lower than the genetic potential of the varieties used and the national average yield of 74 t ha −1 (CONAB 2019). Among the leading causes for the relatively low sugarcane yield are water deficit, injuries caused by pests and diseases, and low soil fertility, including the Si depletion common in tropical soils (Camargo et al 2020;Crusciol et al 2018;Diniz et al 2019;Iwanicki et al 2019;Silva et al 2019).…”

Section: Introductionmentioning

confidence: 99%

“…Silicon is considered a beneficial element for crops, and the adequate supply of Si to sugarcane, a Si-accumulating species, can mitigate biotic and abiotic stresses and promote yield increases (Majumdar and Prakash 2020;Camargo and Keeping 2021). Studies have shown that applying Si to sugarcane can induce tolerance to water stress (Bezerra et al 2019;Camargo et al 2017Camargo et al , 2019, pathogens (Camargo et al 2020;Ramouthar et al 2016), and pests (Atencio et al 2019;Nikpay and Nejadian 2014;Korndörfer et al 2011;Kvedaras et al 2009). Besides, Si can improve crop mineral nutrition and induce biochemical and physiological changes in the plant that positively affect crop performance (Jain et al 2017(Jain et al , 2018Oliva et al 2020).…”

Section: Introductionmentioning

confidence: 99%

Amorphous Silica-Based Fertilizer Increases Stalks and Sugar Yield and Resistance to Stalk Borer in Sugarcane Grown Under Field Conditions

Oliva

Silva

Araújo

et al. 2021

J Soil Sci Plant Nutr

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Silicon (Si) fertilization can mitigate biotic and abiotic stresses and increase the yield of sugarcane. Considering the low availability of Si in tropical soils and the large amounts of fertilizer required by Si accumulating crops, concentrated sources of Si with good solubility may lead to more profitable fertilization management. In this context, we assessed the potential of an amorphous silica-based fertilizer (ASF) on increasing the soil availability and uptake of Si by sugarcane, the growth parameters, the stalk and sugar yields, and the damage caused by stalk borer (Diatraea saccharalis F.). Additionally, Si effects on the accumulation of nutrients by sugarcane were evaluated. The field trial was carried out in a randomized block design with four replications. The ASF was applied at five rates (0, 125, 250, 500, and 750 kg ha −1 ). The evaluation of the plants was performed 12 months after planting. Silicon available content in the soil layers assessed (0.0-0.2 m and 0.2-0.4 m) increased with Si fertilization. The Si concentrations in leaves and stalks were up to 5-and eightfold higher in ASF-amended plants than the control. The Si fertilization increased N, P, K, Ca, Fe, Mn, Cu, and Zn concentrations. Sugarcane growth parameters showed a positive relationship with Si in plants; the height and stalk diameter and the dry leaf biomass were 50, 58, and 71% higher in the 750 kg ha −1 ASF compared to the control, respectively. ASF also increased the contents of fiber, total sugar, and recoverable sugar. The accumulation of Si in the stalk reduced significantly the damage caused by the stalk borer. The ASF rates increased the yield of stalks, total and recoverable sugar, and the stalk borer's resistance, having great potential to boost sugarcane performance in Si-depleted soils in northeast Brazil.

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“…Silicon is taken up by plant roots as monosilicic acid (H 4 SiO), and is deposited as amorphous silica (SiO 2 ), mostly in epidermal cells (Epstein 2009;Fernández Honaine and Osterrieth 2012;Gomez Coe and Osterrieth 2014;Ma and Yamaji 2006;Sangster et al 2001). Si fertilization provides yield increases (Camargo et al 2014;Camargo and Keeping 2021;McCray and Ji 2018) and reduces damage caused by biotic and abiotic stresses in sugarcane (Camargo et al 2014;Camargo et al 2020;Majumdar and Prakash 2020). Physiological aspects, such as increased chlorophyll, water relative contents and water potential levels, have already been reported to be associated with improvements in sugarcane yield from plants grown with and without stress under Si fertilization (Bezerra et al 2019;Elawad et al 1982;Teixeira et al 2020;Verma et al 2020).…”

Section: Introductionmentioning

confidence: 99%

Silicon fertilization increases gas-exchange and biomass by silicophytolith deposition in the leaves of contrasting drought-tolerant sugarcane cultivars under well-watered conditions

et al. 2021

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were evaluated in the top visible dewlap leaves. Stalk length and stalk biomass were also evaluated. ResultsThe silicophytolith, Si contents, net CO 2 assimilation rate (A), plant transpiration (E), stomatal conductance (gs) and electron transport rate (ETR) of leaves and fresh biomass and length of stalks increased linearly as functions of the Si application rate, independent of cultivar. RB86-7515 showed the highest stalk length, fresh stalk and green leaf biomass, relative water content, and water potential, while RB85-5536 showed superior values for A, E, gs, and ETR. Conclusions Si fertilization improved photosynthesis, transpiration, stalk length, and stalk biomass production in sugarcane. The highest silicophytolith content was reflected in a diversity of silicified cells, which may favor a higher photosynthesis and biomass. The increase of silicification in stomata AbstractPurpose Silicon (Si) fertilization provides benefits to sugarcane. However, information remain scarce about the relationship between Si fertilization, gas exchange responses, biomass and silicophytolith accumulation in contrasting drought tolerant sugarcane cultivars under well-watered conditions Methods Sugarcane cultivars (drought-tolerant and drought-sensitive) were grown in pots containing soil with low available Si and were treated (at rates equivalent to 0, 250, 500, 750, and 1000 kg ha −1 Si) with Si as silicate. The silicophytolith contents, morphotype descriptions, Si concentrations and gas exchange Responsible Editor: Miroslav Nikolic.

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Potential prophylactic role of silicon against brown rust (Puccinia melanocephala) in sugarcane

Cited by 10 publications

References 22 publications

Silicon improves the photosynthetic performance of oat leaves infected with Puccinia graminis f. sp. avenae

Silicon improves the photosynthetic performance of oat leaves infected with Puccinia graminis f. sp. avenae

Amorphous Silica-Based Fertilizer Increases Stalks and Sugar Yield and Resistance to Stalk Borer in Sugarcane Grown Under Field Conditions

Silicon fertilization increases gas-exchange and biomass by silicophytolith deposition in the leaves of contrasting drought-tolerant sugarcane cultivars under well-watered conditions

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