Research Article

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Oxalic acid; Phaseolus vulgaris; Physiological resistance; Sclerotinia sclerotiorum

The use of genetically resistant cultivars is the best method to reduce losses caused by white mold (Sclerotinia sclerotiorum (Lib.) de Bary). As the best known resistance sources are not adapted, the genetic control of white mold in the common bean must be understood to guide breeding more efficiently. The objective of the present study was to identify the genetic control of the ... more

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The genetic variability of 40 Sclerotinia sclerotiorum isolates from various fields widely distributed throughout Brazil and different host crops was analyzed using RAPD markers and mycelial compatibility groupings (MCGs). The isolates were characterized using 16 random primers of the OPERON series, which produced 121 DNA fragments. UPGMA cluster analysis using Jaccard’s genetic ... more

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Polygalacturonase-inhibiting proteins are leucine-rich repeat proteins that inhibit fungal endopolygalacturonases. The interaction of polygalacturonase-inhibiting protein with endopolygalacturonases limits the destructive potential of endopolygalacturonases and may trigger plant defense responses induced by oligogalacturonides. We examined the expression of fungal pg and plant ... more

M.B. Oliveira; L.B. Nascimento; M.L. Junior; S. Petrofeza
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acp1; asp5; Phaseolus vulgaris; Protease; Sclerotinia sclerotiorum; White mold

Sclerotinia sclerotiorum (Sclerotiniaceae) is a plant pathogenic fungus that causes white mold disease in vegetable crops, including the common bean (Phaseolus vulgaris). Proteases produced by fungi are normally an important part of the pathogenic process in the host. We examined the effect of different carbon sources - pectin, glucose, and cell wall of P. vulgaris ... more

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The pathogenicity of 47 isolates of Sclerotinia sclerotiorum from oilseed rape (Brassica napus L.) in Anhui, China, was tested by detached leaf inoculation using the susceptible rape cultivar Wanyou-14. All isolates were pathogenic to the cultivar and could be grouped into 3 categories based on the lesion length on the leaves tested: weak pathogenicity type, intermediate ... more

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Carpogenic germination; Microsatellite; Morphology characterization; Mycelial compatibility group; Sclerotinia sclerotiorum

White mold is a common bean disease caused by the fungus Sclerotinia sclerotiorum, resulting in economic losses in Brazil and worldwide. Lack of knowledge about the population structure of the pathogen makes it difficult to control the disease. The aim of this study was to characterize strains of S. sclerotiorum obtained from ex­perimental and commercial common bean ... more

M.J. Abreu; E.A. Souza
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Bayesian shrinkage analysis; common bean; Plant breeding; Quantitative trait loci; Sclerotinia sclerotiorum

In this study, we identified simple sequence repeat, ampli­fied fragment length polymorphism, and sequence-related amplified poly­morphism markers linked to quantitative trait loci (QTLs) for resistance to white mold disease in common bean progenies derived from a cross between lines CNFC 9506 and RP-2, evaluated using the oxalic acid test and using Bayesian analysis. DNA was extracted ... more

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3-1; 4-glucanase; Antifungal activity; Bacillus subtilis; Heterologous expression; Sclerotinia sclerotiorum; β-1

An antifungal protein exhibiting a high activity against Sclero­tinia sclerotiorum in vivo was purified by ammonium sulfate precipitation, hydrophobic chromatography, and gel filtration chromatography from the culture filtrate of the endophytic Bacillus subtilis strain Em7. The protein was characterized as a β-1,3-1,4-glucanase according to amino acid analysis, and showed ... more

N.N. Wang; X.N. Gao; X. Yan; Z.P. Li; Z.S. Kang; L.L. Huang; Q.M. Han
08/26/2016
Bayesian analysis; Oxalic acid; Phaseolus vulgaris; Sclerotinia sclerotiorum; Straw test

We aimed to identify simple sequence repeat (SSR) markers linked to quantitative trait loci (QTLs) associated with white mold resistance in a segregating population derived from a cross between common bean cultivars Jalo and Small White, in the Southern State of Minas Gerais. Parents were crossed to obtain the F2 generation of 190 plants. From these, F2:3 and F2 ... more

D.A. Souza; M. Balestre; A.K.A. Pamplona; M.E. Leite; J.A. Dias; J.B. Santos; D.A. Souza; M. Balestre; A.K.A. Pamplona; M.E. Leite; J.A. Dias; J.B. Santos

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