Advances and Prospects in Wheat Eyespot Research: Contributions from Genetics and Molecular Tools

Wei, Lin; Muranty, Hélène; Zhang, Huaigang

doi:10.1111/j.1439-0434.2011.01795.x

Cited by 13 publications

(13 citation statements)

References 132 publications

(305 reference statements)

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“…and Ramularia leaf spot (Ramularia collo-cygni). Eyespot, caused by the necrotrophic pathogens O. acuformis and O. yallundae, is a disease of major economic significance for wheat (Wei et al, 2011). Eyespot presents as elliptical, necrotic lesions on the stem base.…”

Section: Hemibiotrophic and Necrotrophic Fungal Pathogensmentioning

confidence: 99%

Brachypodium as an emerging model for cereal–pathogen interactions

et al. 2015

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Background Cereal diseases cause tens of billions of dollars of losses annually and have devastating humanitarian consequences in the developing world. Increased understanding of the molecular basis of cereal host-pathogen interactions should facilitate development of novel resistance strategies. However, achieving this in most cereals can be challenging due to large and complex genomes, long generation times and large plant size, as well as quarantine and intellectual property issues that may constrain the development and use of community resources. Brachypodium distachyon (brachypodium) with its small, diploid and sequenced genome, short generation time, high transformability and rapidly expanding community resources is emerging as a tractable cereal model.Scope Recent research reviewed here has demonstrated that brachypodium is either susceptible or partially susceptible to many of the major cereal pathogens. Thus, the study of brachypodium-pathogen interactions appears to hold great potential to improve understanding of cereal disease resistance, and to guide approaches to enhance this resistance. This paper reviews brachypodium experimental pathosystems for the study of fungal, bacterial and viral cereal pathogens; the current status of the use of brachypodium for functional analysis of cereal disease resistance; and comparative genomic approaches undertaken using brachypodium to assist characterization of cereal resistance genes. Additionally, it explores future prospects for brachypodium as a model to study cereal-pathogen interactions.Conclusions The study of brachypodium-pathogen interactions appears to be a productive strategy for understanding mechanisms of disease resistance in cereal species. Knowledge obtained from this model interaction has strong potential to be exploited for crop improvement.

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Section: Hemibiotrophic and Necrotrophic Fungal Pathogensmentioning

confidence: 99%

Brachypodium as an emerging model for cereal–pathogen interactions

et al. 2015

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“…The level of protection provided by Pch1 is not 100% on inoculated plots, however, the lower level of eyespot incidence on cultivars containing the Pch1 gene is statistically significant. Few contradictory results were reported regarding durability of resistance conferred by Pch1 (Wei 2011). Increases in yield loss of cv.…”

Section: Discussionmentioning

confidence: 99%

“…yallundae and o. acuformis differ in morphology, pathogenicity, occurrence, and sensitivity to fungicides (Wei et al 2011). Eyespot pathogens have a wide host range among cereals and grasses.…”

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confidence: 99%

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Resistance of winter wheat cultivars to eyespot and characterisation of causal agents of the disease

Palicová¹,

Matušinsky²,

Dumalasová³

et al. 2018

Plant Prot. Sci.

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Palicová J., Matušinský P., Dumalasová V., Hanzalová A., Bížová I. (2018): Resistance of winter wheat cultivars to eyespot and characterisation of causal agents of the disease. Plant Protect. Sci., 54: 24-30.The reaction of ten winter wheat cultivars grown in the Czech Republic to inoculation with oculimacula yallundae and oculimacula acuformis was evaluated in a small plot trial. In a parallel field trial the natural occurrence of stembase disease complex in six of the tested cultivars was assessed. Lower severity of eyespot (and/or stem-base diseases) was observed in cultivars possessing the resistance gene Pch1 (cvs Hermann, Annie, Princeps, Manager, and Rebell) in plots inoculated with oculimacula spp. as well as in natural field conditions. A total of 468 wheat stem bases from the Czech Republic was screened by PCR to study the frequency of eyespot causal agents. The plants were colonised significantly more often by both species oculimacula yallundae and o. acuformis together than separately.

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“…Various molecular markers linked to Pch1 were developed (Burt et al 2011;Wei et al 2011). The endopeptidase isozyme marker Ep-D1b (McMillin et al 1986) has been widely used.…”

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confidence: 99%

Eyespot resistance gene Pch1 and methods of study of its effectiveness in wheat cultivars

Dumalasová¹,

Palicová²,

Hanzalová³

et al. 2015

CZECH J GENET PLANT

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Dumalasová V., Palicová J., Hanzalová A., Bížová I., Leišová-Svobodová L. (2015): Eyespot resistance gene Pch1 and methods of study of its effectiveness in wheat cultivars. Czech J. Genet. Plant Breed., 51: 166-173.The scientific report presents results of our studies on the gene Pch1, conferring resistance to eyespot disease in wheat, caused by the fungus Occulimacula spp. The presence of the gene Pch1 in wheat cultivars was analysed using the molecular marker Xorw1. In total 106 wheat cultivars registered in the Czech Republic and 54 breeding lines were tested. The gene Pch1 was found in the cultivars Annie, Beduin, Hermann, Iridium, Manager and Princeps and in three breeding lines. Some of these cultivars were tested for eyespot resistance in field trials and showed a high level of resistance. Cv. Hermann was the most resistant winter wheat cultivar in our experiments in the last two years. The method of artificial infection by Oculimacula spp. was optimized.

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Advances and Prospects in Wheat Eyespot Research: Contributions from Genetics and Molecular Tools

Cited by 13 publications

References 132 publications

Brachypodium as an emerging model for cereal–pathogen interactions

Brachypodium as an emerging model for cereal–pathogen interactions

Resistance of winter wheat cultivars to eyespot and characterisation of causal agents of the disease

Eyespot resistance gene Pch1 and methods of study of its effectiveness in wheat cultivars

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