Silicon Potentiates Host Defense Mechanisms Against Infection by Plant Pathogens

Rodrigues, Fabrício Á.; Resende, Renata Sousa; Dallagnol, Leandro José; Datnoff, Lawrence E.

doi:10.1007/978-3-319-22930-0_5

Cited by 38 publications

(18 citation statements)

References 105 publications

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“…Silicon could alleviate plant disease through preventing pathogen penetration (1) via structural reinforcement ( Epstein, 1999 ; Epstein, 2001 ; Rodrigues et al, 2015b ), (2) by inhibiting pathogen colonization through stimulating systemic acquired resistance, (3) through antimicrobial compound production ( Fauteux et al, 2005 ; Datnoff et al, 2007 ; Fortunato et al, 2012b ; Van et al, 2013 ), as well as (4) through increasing plant resistance by activating multiple signaling pathways and defense-related gene expression ( Fauteux et al, 2005 ; Chen et al, 2014 ; Vivancos et al, 2015 ). The beneficial effects of Si with regard to plant resistance to disease are attributed to Si accumulation in epidermal tissue, the formation of complexes with organic compounds in cell walls, the induction of phenolic compounds, phytolexin/glucanase/peroxidase production, and regulating pathogenicity or stress-related gene expression to limit pathogen invasion and colonization ( Belanger et al, 2003 ; Brunings et al, 2009 ; Chain et al, 2009 ; Sakr, 2016 ).…”

Section: Introductionmentioning

confidence: 99%

Role of Silicon on Plant–Pathogen Interactions

et al. 2017

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Although silicon (Si) is not recognized as an essential element for general higher plants, it has beneficial effects on the growth and production of a wide range of plant species. Si is known to effectively mitigate various environmental stresses and enhance plant resistance against both fungal and bacterial pathogens. In this review, the effects of Si on plant–pathogen interactions are analyzed, mainly on physical, biochemical, and molecular aspects. In most cases, the Si-induced biochemical/molecular resistance during plant–pathogen interactions were dominated as joint resistance, involving activating defense-related enzymes activates, stimulating antimicrobial compound production, regulating the complex network of signal pathways, and activating of the expression of defense-related genes. The most previous studies described an independent process, however, the whole plant resistances were rarely considered, especially the interaction of different process in higher plants. Si can act as a modulator influencing plant defense responses and interacting with key components of plant stress signaling systems leading to induced resistance. Priming of plant defense responses, alterations in phytohormone homeostasis, and networking by defense signaling components are all potential mechanisms involved in Si-triggered resistance responses. This review summarizes the roles of Si in plant–microbe interactions, evaluates the potential for improving plant resistance by modifying Si fertilizer inputs, and highlights future research concerning the role of Si in agriculture.

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Section: Introductionmentioning

confidence: 99%

Role of Silicon on Plant–Pathogen Interactions

et al. 2017

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“…Rice, wheat, sugar beet, sugar cane and soybean can accumulate 41.6, 24.5, 23.4, 15.1 and 14.0 g Si kg −1 DM, respectively [24]. Silicon can enhance resistance of plants to diseases caused by fungi or bacteria [25] through structural reinforcement [26], inhibiting pathogen colonization, antimicrobial compound production [27] and increasing plant resistance through activating signaling pathways and defense-related gene expression [28]. In addition, silicon can ameliorate harmful effects of various environmental stresses on plant growth and productivity [15,17,29].…”

Section: Introductionmentioning

confidence: 99%

Integrative Effects of Rice-Straw Biochar and Silicon on Oil and Seed Quality, Yield and Physiological Traits of Helianthus annuus L. Grown under Water Deficit Stress

et al. 2019

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Water deficit stress can negatively affect oil quality, crop yields and soil infertility. Thus, we investigated the effects of rice-straw biochar, foliar silicon and their combination on quality, yield and physiological traits of sunflower grown under three water deficit stress treatments. Water stress treatments were 50% (WS0; no stress), 70% (WS1; moderate stress) and 90% (WS2; severe stress) depletion of the available soil moisture. The results showed that WS1 and WS2 negatively affected oil quality, mycorrhizal spores, yield and physiological traits of the sunflower; however, biochar, silicon and their combination significantly (p ≤ 0.05) improved most of those traits. Oil and oleic acid contents of sunflower grown under WS2 were decreased by 18% and 25.8% compared to those grown under WS0, respectively. Nevertheless, the biochar and silicon combination resulted in higher oil (10.2%) and oleic acid (12.2%) in plants grown under WS2 than those grown in untreated plots. Also, a significant increase (182% and 277%) in mycorrhizal spores was obtained in soil treated combination of biochar and silicon under WS1 and WS2 in comparison to untreated soil, respectively. On the other hand, plants grown under WS1 and WS2 exhibited reduced seed yield ha−1 by 16.5% and 53.5% compared to those grown under WS0, respectively. However, seed yield ha−1 were increased by 26.8% and 27.1% in plots treated with combined treatment compared to untreated plants, respectively. In addition, the biochar and silicon combination significantly increased stomatal conductance by 21.4% and 12.1%, reduced proline by 56.6% and 51.2% and reduced catalase activity by 13.4% and 17.3% under WS1 and WS2 compared to those grown in untreated plots, respectively. Therefore, the combined treatment of biochar and silicon can minimize and alleviate the negative effects of WS1 and WS2, improve oil quality, physiological traits, microbial activity and seed yield ha−1in sunflower plants.

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“…Moreover, some authors suggest that the role of Si is more complex and that soluble Si can also act as a signal to modulate metabolic pathways ( Samuels et al, 1991 ; Fawe et al, 2001 ; Fauteux et al, 2005 ). Indeed, some studies have shown that Si treatment of plants alleviates stress response genes ( Fauteux et al, 2006 ) and induces an accumulation of enzymes involved in photosynthesis and detoxification of reactive oxygen species ( Savant et al, 1997 ; Schmidt et al, 1999 ) and also phytohormone synthesis ( Rodrigues et al, 2015 ; Van Bockhaven et al, 2015 ). In cucumber, Adatia and Besford (1986) have also observed that Si treatment increases leaf area, leaf erectness chlorophyll and RuBisCo contents.…”

Section: Introductionmentioning

confidence: 99%

Silicon Promotes Growth of Brassica napus L. and Delays Leaf Senescence Induced by Nitrogen Starvation

Haddad

Arkoun²,

Jamois³

et al. 2018

Front. Plant Sci.

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Silicon (Si) is the second most abundant element in soil and has several beneficial effects, especially in plants subjected to stress conditions. However, the effect of Si in preventing nitrogen (N) starvation in plants is poorly documented. The aim of this work was to study the effect of a short Si supply duration (7 days) on growth, N uptake, photosynthetic activity, and leaf senescence progression in rapeseed subjected (or not) to N starvation. Our results showed that after 1 week of Si supply, Si improves biomass and increases N uptake and root expression of a nitrate transporter gene. After 12 days of N starvation, compared to -Si plants, mature leaf from +Si plants showed a high chlorophyll content, a maintain of net photosynthetic activity, a decrease of oxidative stress markers [hydrogen peroxide (H2O2) and malondialdehyde (MDA)] and a significant delay in senescence. When N-deprived plants were resupplied with N, a greening again associated with an increase of photosynthetic activity was observed in mature leaves of plants pretreated with Si. Moreover, during the duration of N resupply, an increase of N uptake and nitrate transporter gene expression were observed in plants pretreated with Si. In conclusion, this study has shown a beneficial role of Si to alleviate damage associated with N starvation and more especially its role in delaying of leaf senescence.

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Silicon Potentiates Host Defense Mechanisms Against Infection by Plant Pathogens

Cited by 38 publications

References 105 publications

Role of Silicon on Plant–Pathogen Interactions

Role of Silicon on Plant–Pathogen Interactions

Integrative Effects of Rice-Straw Biochar and Silicon on Oil and Seed Quality, Yield and Physiological Traits of Helianthus annuus L. Grown under Water Deficit Stress

Silicon Promotes Growth of Brassica napus L. and Delays Leaf Senescence Induced by Nitrogen Starvation

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