Partial resistance to white mould in dry bean

BalasubramanianP., M.; ConnerR., L.; McLarenD., L.; Chatterton, Syama; HouA.,

doi:10.4141/cjps2013-312

Cited by 22 publications

(20 citation statements)

References 49 publications

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“…2). Similar results were obtained by Balasubramanian et al (2014). Previous studies under Egyptian conditions by Hatamleh et al (2013) referred that cultivar Paulista was the lowest cultivar for susceptibility to S. sclerotiorum that giving 80% survived plants.…”

Section: Evaluation Of S Sclerotiorum Pathogenesis On Different Cultsupporting

confidence: 87%

CONTROLLING COMMON BEAN WHITE MOULD CAUSED BY Sclerotinia sclerotiorum (Lib.) de Bary

Ali

Atallah

2020

Zagazig Journal of Agricultural Research

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Bean white mould caused by Sclerotinia sclerotiorum (Lib.) de Bary is a widespread and destructive disease under protective and open field cultivation in Egypt and worldwide. The vegetative sclerotial fungal structures formed by such pathogen give capability to overwinter between seasons. Different strategies are used efficiently to control the disease and eradicate its causal pathogen. The study was carried out to control the disease under Egyptian conditions. Results revealed that variability in virulence among the tested isolates was correlated with their oxalic acid production. Large white lima cultivar was the most resistant while Cranberry beans was the most susceptible in both detached leaf technique or under field conditions. Among the nine Trichoderma spp. used as biological control agent, T. asperellum inhibited S. sclerotiorum growth in vitro and controlled disease incidence in the field more efficiently. Epidemiological studies also revealed that high soil temperature inhibited sclerotial formation even in presence of high soil moisture while dry soil alleviated the inhibitory effect of high temperature. Sowing the selected resistant cultivars on early September at 50 cm distance with eight days interval period irrigation and organic compost for fertilization gave the most significant control for disease incidence and severity under field conditions.

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Section: Evaluation Of S Sclerotiorum Pathogenesis On Different Cultsupporting

confidence: 87%

CONTROLLING COMMON BEAN WHITE MOULD CAUSED BY Sclerotinia sclerotiorum (Lib.) de Bary

Ali

Atallah

2020

Zagazig Journal of Agricultural Research

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“…Use of genetic resistance to white mould would be the ideal solution to combat this disease, but cultivars with complete genetic resistance are lacking in dry bean. Cultivars grown in western Canada were either susceptible or had only partial field resistance (i.e., avoidance) to white mould (Balasubramanian et al 2014). Partial physiological resistance to white mould was lacking in the cultivars and advanced lines assessed in the above study.…”

Section: Introductionmentioning

confidence: 91%

“…White mould disease, caused by the soil-borne fungus Sclerotinia sclerotiorum (Lib.) de Bary, has been a major constraint to dry bean production (Bailey et al 2003). This fungus has a wide host range, including dry bean and other profitable crops (Purdy 1979;Boland and Hall 1994), and produces sclerotia that can survive for many years in soil (Adams and Ayers 1979).…”

Section: Introductionmentioning

confidence: 99%

Influence of irrigation and plant canopy architecture on white mould disease of dry bean

2018

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White mould caused by the fungus Sclerotinia sclerotiorum (Lib.) de Bary is a major constraint to irrigated dry bean production in southern Alberta. Irrigation, coupled with dry bean canopy architecture, may influence white mould by creating conducive environmental conditions. Field experiments were conducted from 2015 to 2017 at Lethbridge to determine the effect of three irrigation levels and five dry bean genotypes with different canopy architectures on white mould. Sensors and data loggers were established to monitor micro-climate data including soil moisture within the top 5 cm, leaf wetness, and soil temperature under the canopy. Canopy porosity, lodging, flower infection, and white mould disease severity were also measured. Higher moisture within the top 5 cm of the soil, lower soil temperature, elevated leaf wetness, and higher white mould incidence were observed in high irrigation plots compared with medium and low irrigation plots. Cultivars varied for leaf wetness, porosity, and lodging. Although a significant interaction between irrigation and cultivar was detected, irrigation levels did not affect disease severity significantly. Lower disease severity and incidence were recorded in AAC Burdett and Island. These cultivars have an upright growth habit, high canopy porosity, and lodging resistance, and therefore, exhibited partial field resistance (avoidance) to white mould. Mean yield across all cultivars was not affected by irrigation; however, the highest yield occurred in the medium irrigation plots. A reduced level of irrigation and development of cultivars with both avoidance and partial physiological resistance may reduce white mould severity and incidence in dry bean fields in Alberta.

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“…Partial resistance, available in some common bean materials, is associated with avoidance or physiological resistance mechanisms, or a combination of both mechanisms. Architectural features such as canopy density, canopy height, and lodging resistance [5,10] in uence avoidance mechanisms.…”

Section: Introductionmentioning

confidence: 99%

Linked candidate genes of different functions for white mold resistance in common bean (Phaseolus vulgaris. L) are identified by QTL-based pooled sequencing

Oladzad

Mamidi

Miklas

et al. 2019

Preprint

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Background White mold (WM) is a major disease in common bean ( Phaseolus vulgaris L.), and its complex quantitative genetic control has limited the development of WM resistant cultivars. WM2.2 is one of the nine meta-QTL that has a major effect on WM tolerance. This QTL explains up to 35% of the phenotypic variation and was previously mapped to a large interval on Pv02. Our objective was to narrow the interval of this QTL using QTL-based bulk segregant analysis.Results The phenotypic and genotypic data from two RIL populations (R31 and Z0726-9), which possess different genetic backgrounds for white mold resistance, were used to select resistant and susceptible lines to generate subpopulations for bulk DNA sequencing, and reads were aligned against the sequence of the resistance parent. The QTL physical intervals for each RIL population were mapped by fixed SNPs in 10kb-2kb sliding windows. WM2.2 QTL was split into two regions WM2.2a (3.54-4.56 Mbp; euchromatic) and WM 2.2b (12.19 to 26.41 Mbp; heterochromatic) in populations R31 and Z0726-9, respectively. For each QTL interval, the possible functional contribution of significant non-synonymous and synonymous polymorphisms was investigated. Gene models encoding for pentatricopeptide repeat, gibberellin 2-oxidase, and heat-shock proteins are the likely candidate genes associated with WM2.2a resistance. A TIR-NBS-LRR class of disease resistance protein and a EF-TU receptor are potential candidate genes associated with WM2.2b resistance and most likely trigger a physiological resistance response to WM.Conclusion QTL-based pooled sequencing analysis revealed that the large genomic region associated with WM2.2 meta QTL consists of two major QTL each associated with a different WM resistance function. WM2.2a region is most likely associated with avoidance mechanisms while WM2.2b region triggers physiological resistance.

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Partial resistance to white mould in dry bean

Cited by 22 publications

References 49 publications

CONTROLLING COMMON BEAN WHITE MOULD CAUSED BY Sclerotinia sclerotiorum (Lib.) de Bary

CONTROLLING COMMON BEAN WHITE MOULD CAUSED BY Sclerotinia sclerotiorum (Lib.) de Bary

Influence of irrigation and plant canopy architecture on white mould disease of dry bean

Linked candidate genes of different functions for white mold resistance in common bean (Phaseolus vulgaris. L) are identified by QTL-based pooled sequencing

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