Genetic structure of South Australian Pyrenophora teres populations as revealed by microsatellite analyses

Bogacki, P.; Keiper, Felicity; Oldach, Klaus

doi:10.1016/j.funbio.2010.08.002

Cited by 34 publications

(29 citation statements)

References 34 publications

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“…Bogacki et al . () collected PTT samples from a single field in South Australia and reported an average of 3.3 alleles per locus, based on 20 sequence‐tagged microsatellite (STM) markers developed by Keiper et al . ().…”

Section: Discussionmentioning

confidence: 99%

“…The number of alleles per locus also compares well to 6.46 reported by Liu et al (2012), using the same set of primers, with samples collected from experimental field plots at two sites 300 km apart in North Dakota over 4 years. Bogacki et al (2010) collected PTT samples from a single field in South Australia and reported an average of 3.3 alleles per locus, based on 20 sequence-tagged microsatellite (STM) markers developed by Keiper et al (2007). These results are only broadly comparable given differences in the number of sites, sampling strategies and the number of isolates studied.…”

Section: Discussionmentioning

confidence: 99%

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Genetic variation of Pyrenophora teres f. teres isolates in Western Australia and emergence of a Cyp51A fungicide resistance mutation

et al. 2018

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Genome‐wide, unlinked, simple sequence repeat markers were used to examine genetic variation and relationships within Pyrenophora teres f. teres, a common pathogen of barley, in Western Australia. Despite the region's geographic isolation, the isolates showed relatively high allelic variation compared to similar studies, averaging 7.11 alleles per locus. Principal component, Bayesian clustering and distance differentiation parameters provided evidence for both regional genotypic subdivision together with juxtaposing of isolates possessing different genetic backgrounds. Genotyping of fungicide resistant Cyp51A isolates indicated a single mutation event occurred followed by recombination and long‐distance regional dispersal over hundreds of kilometres. Selection of recently emergent favourable alleles such as the Cyp51A mutation and a cultivar virulence may provide an explanation, at least in part, for juxtaposed genotypes. Factors affecting genotypic composition and the movement of new genotypes are discussed in the context of grower practices and pathogen epidemiology, together with the implications for resistance breeding.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Genetic variation of Pyrenophora teres f. teres isolates in Western Australia and emergence of a Cyp51A fungicide resistance mutation

et al. 2018

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“…Although Australian Ptt isolates are relatively similar, genetic variation appears to be correlated with sampling location, time of sampling, and the barley cultivar from which they were sampled . Furthermore, the virulence of Ptt isolates has been rapidly evolving in Australia with the identification of isolates that have overcome resistance on the barley cultivars Keel, Maritime, and Fleet since 2009 (H. Wallwork, personal communication ; https://www.grdc.com.au/Research-and-Development/GRDC-Update-Papers/2014/02/Cereal-disease-update-and-use-of-fungicides-on-fertiliser-and-seed).…”

Section: Introductionmentioning

confidence: 99%

Secretome analysis of virulentPyrenophora teresf. teresisolates

Ismail

Able

2016

Proteomics

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Pyrenophora teres f. teres (Ptt) causes net form net blotch disease of barley, partially by producing necrosis-inducing proteins. The protein profiles of the culture filtrates of 28 virulent isolates were compared by a combination of 2DE and 1D-PAGE with 105 spots and 51 bands chosen for analysis by liquid chromatography electrospray ionization tandem mass spectrometry. A total of 259 individual proteins were identified with 63 of these proteins being common to the selected virulent isolates. Ptt secretes a broad spectrum of proteins including cell wall degrading enzymes; virulence factors and effectors; proteins associated with fungal pathogenesis and development; and proteins related to oxidation-reduction processes. Potential virulence factors and effectors identified included proteins with glucosidase activity, ricin B and concanavalin A-like lectins, glucanases, spherulin, cutinase, pectin lyase, leucine-rich repeat protein, and ceratoplatanin. Small proteins with unknown function but cysteine-rich, common to effectors, were also identified. Differences in the secretion profile of the Ptt isolates have also provided important insight into the different mechanisms contributing to virulence and the development of net form net blotch symptoms.

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“…No ascomiceto Pyrenophora teres, que causa a mancha reticular na cevada, os marcadores microssatélites foram utilizados para determinar o nível de diversidade genética e diferenciação entre duas populações em áreas de cultivo, e avaliar a prevalência da reprodução sexual nestas populações (BOGACKI et al, 2010). Com o uso de microssatélites foi identificada uma maior diversidade genética nas populações do que relatada anteriormente com o uso de outros marcadores moleculares, e ainda que ambas as populações de P. teres analisadas apresentavam predominantemente recombinação sexual (BOGACKI et al, 2010).…”

Section: Microssatélites Em Fungosunclassified

“…Com o uso de microssatélites foi identificada uma maior diversidade genética nas populações do que relatada anteriormente com o uso de outros marcadores moleculares, e ainda que ambas as populações de P. teres analisadas apresentavam predominantemente recombinação sexual (BOGACKI et al, 2010).…”

Section: Microssatélites Em Fungosunclassified

Avaliação da diversidade genética e associação com patogenicidade de isolados de Moniliophthora perniciosa oriundos da Amazônia Brasileira

Freitas¹

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Genetic structure of South Australian Pyrenophora teres populations as revealed by microsatellite analyses

Cited by 34 publications

References 34 publications

Genetic variation of Pyrenophora teres f. teres isolates in Western Australia and emergence of a Cyp51A fungicide resistance mutation

Genetic variation of Pyrenophora teres f. teres isolates in Western Australia and emergence of a Cyp51A fungicide resistance mutation

Secretome analysis of virulentPyrenophora teresf. teresisolates

Avaliação da diversidade genética e associação com patogenicidade de isolados de Moniliophthora perniciosa oriundos da Amazônia Brasileira

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