Silicon improves the emergence and sanity of rice seedlings obtained from seeds infected with Bipolaris oryzae

Dallagnol, Leandro José; Rodrigues, Fabrício Á.; Mielli, Matheus V. B.

doi:10.1590/s1982-56762013000600003

Cited by 17 publications

(8 citation statements)

References 15 publications

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“…Consistent with previous results (Dallagnol et al ., , , b; Rezende et al ., ; Silva et al ., ), the application of Si resulted in a substantial reduction in brown spot disease severity in both intact plant and detached leaf assays (Fig. A–D).…”

Section: Resultsmentioning

confidence: 79%

Primary metabolism plays a central role in moulding silicon‐inducible brown spot resistance in rice

Bockhaven

Steppe

Bauweraerts

et al. 2015

Molecular Plant Pathology

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Over recent decades, a multitude of studies have shown the ability of silicon (Si) to protect various plants against a range of microbial pathogens exhibiting different lifestyles and infection strategies. Despite this relative wealth of knowledge, an understanding of the action mechanism of Si is still in its infancy, which hinders its widespread application for agricultural purposes. In an attempt to further elucidate the molecular underpinnings of Si-induced disease resistance, we studied the transcriptome of control and Si-treated rice plants infected with the necrotrophic brown spot fungus Cochliobolus miyabeanus. Analysis of brown spot-infected control plants suggested that C. miyabeanus represses plant photosynthetic processes and nitrate reduction in order to trigger premature senescence and cause disease. In Si-treated plants, however, these pathogen-induced metabolic alterations are strongly impaired, suggesting that Si alleviates stress imposed by the pathogen. Interestingly, Si also significantly increased photorespiration rates in brown spot-infected plants. Although photorespiration is often considered as a wasteful process, recent studies have indicated that this metabolic bypass also enhances resistance during abiotic stress and pathogen attack by protecting the plant's photosynthetic machinery. In view of these findings, our results favour a scenario in which Si enhances brown spot resistance by counteracting C. miyabeanus-induced senescence and cell death via increased photorespiration. Moreover, our results shed light onto the mechanistic basis of Si-induced disease control and support the view that, in addition to activating plant immune responses, Si can also reduce disease severity by interfering with pathogen virulence strategies.

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Section: Resultsmentioning

confidence: 79%

Primary metabolism plays a central role in moulding silicon‐inducible brown spot resistance in rice

Bockhaven

Steppe

Bauweraerts

et al. 2015

Molecular Plant Pathology

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“…Diri-593 gent protein conferred resistance by lignin and lignan synthesis (Ralph et al, 2006). The lig-594 nin synthesis was expected to relate with resistance to BLS by strengthening cell walls 595 (Dallagnol et al, 2013). 596…”

Section: Dissecting Resistance To Bls 524mentioning

confidence: 99%

Genome-Wide Associations with Resistance to Bipolaris Leaf Spot (Bipolaris oryzae (Breda de Haan) Shoemaker) in a Northern Switchgrass Population (Panicum virgatum L.)

Songsomboon

Crawford

et al. 2018

Preprint

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Switchgrass (Panicum virgatum L.), a northern native perennial grass, suffers from yield reduction from Bipolaris leaf spot caused by Bipolaris oryzae (Breda de Haan) Shoe-maker. This study aimed for determining the resistant populations via multiple phenotyping approaches and identifying potential resistance genes to the disease from genome-wide association studies in the switchgrass northern association panel. The disease resistance was evaluated from both natural (field evaluations in NY and PA) and artificial inoculations (detached leaf and leaf disk assays). There are ten out of the 66 populations showed the most resistant based on a combination of detached leaf, leaf disk, and mean from two locations. The GWAS from five subgroups from the association panel to different disease evaluation combinations yielded 27 significant SNPs on 12 chromosomes: 1K, 2K, 2N, 3K, 3N, 4N, 5K, 5N, 6N, 7K, 7N, and 9N accumulatively explaining phenotypic variance of BLUPs of detached leaf percent lesion via image analysis 26.52% at most and BLUPs of leaf disk percent lesion via image analysis 3.28% at least. Within linkage disequilibrium of 20 kb, these SNP markers linked with the potential resistance genes including genes encoding for NBS-LRR, PPR, cell wall related proteins, homeostatic proteins, anti-apoptotic proteins, and ABC transporters.

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“…This plant is susceptible to many pathogens responsible for significant damages in the fields, among them are the fungus, bacteria, virus and nematodes (Bianchini, Maringoni, & Carneiro, 2005), which can be associate to seeds and, as consequence, demanding control measures (Carvalho & Nakagawa, 2012). Studies demonstrate that Si when supplied to rice via seeds, reduce the fungi in tegument incidence (Tunes et al, 2014), thus propitiating more health and vigorous plants (Dallagnol, Rodrigues, & Mielli, 2013).…”

Section: Introductionmentioning

confidence: 99%

Silicon Added to Common Bean Seeds: Physiologic and Sanitary Effects

Migliorini¹,

Martins²,

Carvalho³

et al. 2019

JAS

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The objective of this study was to evaluate the effect of the of common bean seeds coating with different doses of Si, supplied by the carbonized rice hulls, in its physic, physiologic and sanitary attributes, as well determine the amount of this element absorbed in plants. The experiment was conducted in Laboratory of Seed Analysis belonging to the Universidade Federal de Pelotas-Brazil, during the crop season 2014/2015. For this, common bean seeds of cultivar BRS Expedito were treated at doses of 0, 45, 90, 135 and 180 grams of Si 100 kg-1 of seeds, using a completely randomized experimental design with four replicates The use of different doses of carbonized rice hulls in the seed coat does not alter the physical quality and does not negatively affect the physiological quality of the seeds. Crescent doses of carbonized rice hulls up to 101 g of Si 100 kg-1 of seeds increase the seedlings vigor evaluated by the total dry mass and length of shoot at 21 days after seeding, as well as the Si amount in roots. The root dry mass at 21 days after seeding presents growth reduction with the increase of doses until 104 g of Si 100 kg-1 of seeds, although, without compromising the shoot development and the element accumulation. The different Si doses supplied by the carbonized rice hulls do not control pathogens associated to seeds.

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Silicon improves the emergence and sanity of rice seedlings obtained from seeds infected with Bipolaris oryzae

Cited by 17 publications

References 15 publications

Primary metabolism plays a central role in moulding silicon‐inducible brown spot resistance in rice

Primary metabolism plays a central role in moulding silicon‐inducible brown spot resistance in rice

Genome-Wide Associations with Resistance to Bipolaris Leaf Spot (Bipolaris oryzae (Breda de Haan) Shoemaker) in a Northern Switchgrass Population (Panicum virgatum L.)

Silicon Added to Common Bean Seeds: Physiologic and Sanitary Effects

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