Powdery mildew of Arabidopsis thaliana: a pathosystem for exploring the role of silicon in plant–microbe interactions

Ghanmi, Dalila; McNally, David J.; Benhamou, Nicole; Menzies, J. I.; Bélanger, Richard R.

doi:10.1016/j.pmpp.2004.07.005

Cited by 83 publications

(61 citation statements)

References 42 publications

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“…These results were consistent on all plants tested even though A. thaliana did absorb Si in important amounts as observed here and reported previously (20). In rice, Watanabe et al (44) concluded that differences in gene expression were not appreciable between Si-treated and nontreated plants in the absence of stress.…”

Section: Discussionsupporting

confidence: 92%

“…A. thaliana was shown to take up Si and was subsequently more resistant to the fungal pathogen Erysiphe cichoracearum DC (20). The events leading to this prophylactic role of Si in A. thaliana were similar to those observed in cucumber-powdery mildew and wheat-powdery mildew interactions, thereby confirming that A. thaliana was a suitable model to study the role of Si in plants.…”

supporting

confidence: 53%

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The protective role of silicon in the Arabidopsis –powdery mildew pathosystem

Fauteux

Chain

Belzile

et al. 2006

Proc. Natl. Acad. Sci. U.S.A.

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299

202

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The role and essentiality of silicon (Si) in plant biology have been debated for >150 years despite numerous reports describing its beneficial properties. To obtain unique insights regarding the effect of Si on plants, we performed a complete transcriptome analysis of both control and powdery mildew-stressed Arabidopsis plants, with or without Si application, using a 44K microarray. Surprisingly, the expression of all but two genes was unaffected by Si in control plants, a result contradicting reports of a possible direct effect of Si as a fertilizer. In contrast, inoculation of plants, treated or not with Si, altered the expression of a set of nearly 4,000 genes. After functional categorization, many of the upregulated genes were defense-related, whereas a large proportion of down-regulated genes were involved in primary metabolism. Regulated defense genes included R genes, stress-related transcription factors, genes involved in signal transduction, the biosynthesis of stress hormones (SA, JA, ethylene), and the metabolism of reactive oxygen species. In inoculated plants treated with Si, the magnitude of down-regulation was attenuated by >25%, an indication of stress alleviation. Our results demonstrate that Si treatment had no effect on the metabolism of unstressed plants, suggesting a nonessential role for the element but that it has beneficial properties attributable to modulation of a more efficient response to pathogen stress.Erysiphe cichoracearum ͉ microarray ͉ transcriptome

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Section: Discussionsupporting

confidence: 92%

supporting

confidence: 53%

The protective role of silicon in the Arabidopsis –powdery mildew pathosystem

Fauteux

Chain

Belzile

et al. 2006

Proc. Natl. Acad. Sci. U.S.A.

Self Cite

299

202

View full text Add to dashboard Cite

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“…In spite of the many scientifi c reports about silicon eff ects on fungal pathogens, the properties, spectrum of effi cacy and mode of action of silicon remain largely speculative (Ghanmi et al, 2004;Fauteux et al, 2005;Datnoff et al, 2007;Van Bockhaven et al, 2013). Under controlled hydroponic conditions, silicon does not aff ect plant growth or development (Ma and Yamaji, 2006).…”

Section: Mechanisms Of Silicon-enhanced Resistancementioning

confidence: 99%

“…Increased silicon-induced resistance of rice to blast (M. grisea) was related to higher production of phytoalexin (Rodrigues et al, 2004;. Higher accumulation of fungitoxic phenolic compounds due to silicon treatment protected Arabidopsis from powdery mildew caused by Erysiphe cichoracearum (Ghanmi et al, 2004;Fauteux et al, 2005). Increased activity of antimicrobial glycosylated phenolics, diterpenoid phytoalexins, and lignin decreased severity of blast disease in silicon-treated rice plants (Cai et al, 2008).…”

Section: Antifungal Compoundsmentioning

confidence: 99%

The role of silicon (Si) in increasing plant resistance against fungal diseases

Sakr

2016

Hellenic Plant Protection Journal

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Summary The use of silicon (Si) in agriculture has attracted a great deal of interest from researchers because of the numerous benefits of this element to plants. The use of silicon has decreased the intensity of several diseases in crops of great economic importance. In this study, the relationship between silicon nutrition and fungal disease development in plants was reviewed. The current review underlines the agricultural importance of silicon in crops, the potential for controlling fungal plant pathogens by silicon treatment, the different mechanisms of silicon-enhanced resistance, and the inhibitory effects of silicon on plant pathogenic fungi in vitro. By combining the data presented in this paper, a better comprehension of the relationship between silicon treatments, increasing plant resistance, and decreasing severity of fungal diseases could be achieved.

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“…Resistance to brown rot in peach farming is correlated to preformed structural plant defense mechanisms, such as cuticle thickness, epidermal cell compaction and phenolic compound production (Ghanmi et al 2004, Lee & Bostock 2007. Michailidis & Johnson (1992) reported that, after spores germinated, resistance to infection by Monilinia fructicola was associated with cuticle and cell wall thickness, in which the quiescent period of the fungus was prolonged according to the increase in cuticle and cell wall thickness of peaches.…”

Section: Resultsmentioning

confidence: 99%

Use of sodium metasilicate for management of peach brown rot

Pavanello

Brackmann

Costa

et al. 2016

Pesqui. Agropecu. Trop.

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Peach brown rot, caused by the Monilinia fructicola fungus, is the main disease affecting peach crops, and it is mainly controlled via frequent fungicide applications. This study aimed at searching for alternatives to the intensive use of chemicals, evaluating silicon doses to control pre and postharvest peach brown rot and their influence on maturation parameters and fruit quality. Treatments consisted of control (water) and sodium metasilicate doses (2 g L-1, 4 g L-1, 6 g L-1, 8 g L-1 and 10 g L-1 of water). The following assessments were made: spore germination and in vitro mycelial growth, brown rot incidence, soluble solids, titratable acidity, flesh firmness, total polyphenol content and fruit ethylene production and respiration rate. The 2 g L-1 dose reduced spore germination by 95 %. Doses of 6 g L-1 and 8 g L-1 satisfactorily reduced the disease incidence in the field, with 77 % and 89.2 % control, respectively. Sodium metasilicate resulted in the maintenance of great fruit firmness, reduced respiration and ethylene production and increased total polyphenol synthesis, but it did not influence the titratable acidity or soluble solids. Applying 6 g L-1 may potentially control pre and postharvest peach brown rot, besides increasing the total polyphenol synthesis and maintaining a higher flesh firmness.

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Powdery mildew of Arabidopsis thaliana: a pathosystem for exploring the role of silicon in plant–microbe interactions

Cited by 83 publications

References 42 publications

The protective role of silicon in the Arabidopsis –powdery mildew pathosystem

The protective role of silicon in the Arabidopsis –powdery mildew pathosystem

The role of silicon (Si) in increasing plant resistance against fungal diseases

Use of sodium metasilicate for management of peach brown rot

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