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Effect of Brassicaceae seed meals with different glucosinolate profiles on Rhizoctonia root rot in wheat

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https://ir.library.oregonstate.edu/concern/articles/rb68xc623

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Abstract
  • The soil-borne pathogen Rhizoctonia solani AG 8 causes major yield losses in wheat (Triticum aestivum. L) production worldwide. Plant tissues of Brassicaceae species contain glucosinolates that are hydrolyzed in the presence of the enzyme myrosinase into products with pesticidal properties. Growth chamber studies were conducted to determine the effect of the Brassicaceae seed meals (SMs) from Brassica juncea, Brassica napus and Sinapis alba on the suppression of the R. solani AG 8 infection of winter wheat. Pasteurized sandy soils were amended with intact and denatured SMs of rape seed and mustard at a rate of 0.5% by soil weight. Regardless of the glucosinolate type and content, all intact and denatured Brassicaceae significantly reduced the infection of winter wheat seedlings by R. solani AG 8 compared to the un-amended control. However, soils amended with S. alba SMs had the lowest severity of Rhizoctonia root rot relative to other amended soils. Phytotoxicity arising from the use of Brassicaceae SMs was observed particularly in soils amended with high glucosinolate-containing SMs. These studies demonstrate that Brassicaceae SMs can be used to manage disease caused by R. solani AG-8. However, future studies will need to focus on strategies for diminishing the crop growth-reducing effects associated with Brassicaceae SM amendment to fully maximize these fungicidal benefits. (C) 2013 Elsevier Ltd. All rights reserved.
  • Keywords: Rhizoctonia solani AG-8, Biopesticide, Brassica juncea, Brassica napus, Sinapis alba, Glucosinolate, Seed meal
  • Keywords: Rhizoctonia solani AG-8, Biopesticide, Brassica juncea, Brassica napus, Sinapis alba, Glucosinolate, Seed meal
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  • Handiseni, M., Brown, J., Zemetra, R., & Mazzola, M. (2013). Effect of brassicaceae seed meals with different glucosinolate profiles on rhizoctonia root rot in wheat. Crop Protection, 48, 1-5. doi:10.1016/j.cropro.2013.01.006
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  • 48
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  • This project is partially supported by a grant from Eco-Energy Ltd.
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