Biology and control of Rhizoctonia solani on rapeseed : A Review

Verma, P. R.

doi:10.7202/706106ar

Cited by 40 publications

(43 citation statements)

References 42 publications

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“…Fungicide seed treatments can effectively reduce seedling blight and root rot (Verma 1996). In Canada, several fungicides have been evaluated for the control of preand post-emergence damping-off of canola caused by R. solani (Cotterill et al 1989;Kataria et al 1993).…”

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confidence: 99%

Effect of seeding date and depth, seed size and fungicide treatment on Fusarium and Pythium seedling blight of canola

et al. 2015

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Hwang, S. F., Ahmed, H. U., Turnbull, G. D., Gossen, B. D. and Strelkov, S. E. 2015. Effect of seeding date and depth, seed size and fungicide treatment on Fusarium and Pythium seedling blight of canola. Can. J. Plant Sci. 95: 293–301. Seedling blight has a substantial impact on stand establishment and productivity of canola (Brassica napus) on the Canadian prairies. The effects of seeding date, seed size, seeding depth, and seed treatment fungicides on seedling blight of canola caused by Fusarium avenaceum and Pythium ultimum were evaluated under field conditions. In the trials inoculated with P. ultimum, early seeding reduced seedling emergence and seed yield in all 3 yr of the study. However, the interaction of F. avenaceum with seeding date was not consistent; inoculation with F. avenaceum reduced seedling emergence in early seeded canola in 1 of 4 yr, but emergence was higher in early than in mid-seeded treatments in 2 yr and there was no difference among seeding dates in 1 yr. Late seeding reduced seed yield in 2 of 4 yr in the F. avenaceum study. Seed size and seeding depth generally did not have an effect on seedling establishment or seed yield for either pathogen. Seed treatment with Helix Xtra (thiamethoxam+difenconazole+metalaxyl+fludioxonil) and Prosper FX (clothianidin+carboxin+trifloxystrobin+metalaxyl) fungicides increased seedling emergence and yield compared with the F. avenaceum-inoculated control. Seed treatment with Helix Xtra also increased seedling emergence and seed yield compared with the P. ultimum-inoculated control. Manipulation of seeding date did not substantially improve stand establishment or yield of canola when inoculum pressure was high. Seed treatment was the most effective strategy for reducing losses caused by seedling blight of canola in fields infested with F. avenaceum or P. ultimum.

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Effect of seeding date and depth, seed size and fungicide treatment on Fusarium and Pythium seedling blight of canola

et al. 2015

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“…Canola is a major oilseed crop and Rhizoctonia solani is associated with hypocotyl rot, damping off, seedling rot and root rot of this economically important oilseed crop (Kaminski & Verma 1985;Yitbarek et al 1987;Keinath 1995;Baird 1996;Khangura et al 1999), which causes an annual yield loss of 8-30% (Verma 1996;Khangura et al 1999).…”

Section: Discussionmentioning

confidence: 99%

“…The infection of canola by R. solani occurs in most canola growing regions of the world and reduces yield by 8-30% (Huber & Christmas 1992;Verma 1996;Khangura et al 1999). PGs are among the enzymes produced by R. solani which participate in fungal penetration in order to initiate and expand necrotic infections or to establish the colonisation sites for biotrophic infections within plants.…”

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confidence: 99%

Bean polygalacturonase-inhibiting protein expressed in transgenic Brassica napus inhibits polygalacturonase from its fungal pathogen Rhizoctonia solani

Akhgari¹,

Motallebi²,

Zamani³

2012

Plant Prot. Sci.

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Akhgari A.B., Motallebi M., Zamani M.R. (2012): Bean polygalacturonase-inhibiting protein expressed in transgenic Brassica napus inhibits polygalacturonase from its fungal pathogen Rhizoctonia solani. Plant Prot. Sci., 48: 1-9.Polygalacturonase-inhibiting proteins (PGIPs) selectively inhibit polygalacturonases (PGs) secreted by invading plant pathogenic fungi. The objective of present research was to clone and introduce the pgip2 gene from bean (Phaseolus vulgaris) cv. Goli, with antifungal potential, into the commercially important canola (Brassica napus, R line Hyola 308) via Agrobacterium tumefaciens mediated transformation. Here we used a transgenic overexpression approach in order to investigate the inhibitory activity of the PGIP on the PG from Rhizoctonia solani, the causal agent of damping off and root rot of canola. PGIP expression was determined in the functional inhibition assays against fungal PGs. Crude protein extracts prepared from transgenic canola leaves were found to inhibit the R. solani PG from 29% to 37% as compared to untransformed plants. The putative transgenic canola lines harbouring the pgip2 gene encoding polygalacturonase-inhibiting proteins were identified by polymerase chain reaction and Southern blot analysis.

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“…) in Australia, Canada and the USA (Kaminski and Verma 1985;Hwang et al 1986;1999;Chang et al 2005). These pathogens cause damping-off, hypocotyl, root and crown rot, and it has been reported that Rhizoctonia solani can cause significant yield losses (Verma 1996;Khangura et al 1999;Klein-Gebbinck and Woods 2002;Paulitz and Okubara 2006).…”

Section: Introductionmentioning

confidence: 98%

Evaluation of strategies for the control of canola and lupin seedling diseases caused by Rhizoctonia anastomosis groups

et al. 2011

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Several methods with potential for the management of Rhizoctonia diseases of canola and lupin including plant resistance, fungicide seed treatment and biological control using binucleate Rhizoctonia anastomosis groups (AGs) were evaluated under glasshouse conditions. Screening included the examination of resistance of eight canola and eight lupin cultivars/selections to damping-off and hypocotyl/root rot caused by the multinucleate Rhizoctonia solani AG-2-1, 2-2, 4 and 11. All canola cultivars were highly susceptible to AG-2-1, but Rocket, Spectrum and 44C11 were more resistant than the other cultivars. Spectrum and 44C73 were also more resistant to AG-4 than the other canola cultivars. On lupin, R. solani AG-2-2 and 4 were most virulent, and the cultivar Cedara 6150 and selection E16 were most resistant to AG-2-2; Cedara 6150, E16, Mandelup and Quilinock were more resistant to AG-4 than the other cultivars/selections. The Lupinus luteus selections, E80.1.1.2 and E82.1.1 were most susceptible to AG-2-2, 4 and 11. Seed treatment with the fungicides Cruiser OSR (a.i. difenconazole, fludioxonil, metalaxyl-M, thiamethoxam) and SA-combination (a. i. iprodione, metalaxyl, thiram) significantly increased survival of canola and lupin seedlings, decreased hypocotyl/root rot and improved the percentage of healthy seedlings, with the SA-combination being significantly more effective than Cruiser OSR. Application of the binucleate Rhizoctonia AGs (A, Bo, K and I) significantly increased the survival of lupin seedlings inoculated with R. solani AG-2-2 and 4, and AG-I and K significantly improved survival of canola in the presence of AG-4. This is the first report of the potential of binucleate AGs to protect canola and lupin seedlings against infection by multinucleate AGs.

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Biology and control of Rhizoctonia solani on rapeseed : A Review

Cited by 40 publications

References 42 publications

Effect of seeding date and depth, seed size and fungicide treatment on Fusarium and Pythium seedling blight of canola

Effect of seeding date and depth, seed size and fungicide treatment on Fusarium and Pythium seedling blight of canola

Bean polygalacturonase-inhibiting protein expressed in transgenic Brassica napus inhibits polygalacturonase from its fungal pathogen Rhizoctonia solani

Evaluation of strategies for the control of canola and lupin seedling diseases caused by Rhizoctonia anastomosis groups

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