Genetic structure of a Pyrenophora teres f. teres population over time in an Australian barley field as revealed by Diversity Arrays Technology markers
Article
Article Title | Genetic structure of a Pyrenophora teres f. teres population over time in an Australian barley field as revealed by Diversity Arrays Technology markers |
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ERA Journal ID | 2652 |
Article Category | Article |
Authors | Poudel, B. (Author), Vaghefi, N. (Author), McLean, M. S. (Author), Platz, G. J. (Author), Sutherland, M. W. (Author) and Martin, Anke (Author) |
Journal Title | Plant Pathology |
Journal Citation | 68 (7), pp. 1331-1336 |
Number of Pages | 6 |
Year | 2019 |
Publisher | John Wiley & Sons |
Place of Publication | United Kingdom |
ISSN | 0032-0862 |
1365-3059 | |
Digital Object Identifier (DOI) | https://doi.org/10.1111/ppa.13035 |
Web Address (URL) | https://bsppjournals.onlinelibrary.wiley.com/doi/epdf/10.1111/ppa.13035 |
Abstract | Net form of net blotch caused by Pyrenophora teres f.teres(Ptt) is a major foliar disease of barley (Hordeum vulgare) worldwide. Knowledge of the evolution of Ptt pathogen populations is important for development of durable host-plant resistance. This study was conducted to investigate changes in genetic structure of a Ptt population within a barley field during three cropping years. The susceptible barley cultivar Henley was inoculated with Ptt isolate NB050. Leaf samples were collected during the years 2013–15 and 174 single spore Ptt isolates stored. Genotyping using Diversity Arrays Technology markers identified that 25% of isolates were clones of the inoculated isolate and 75% of isolates were multilocus genotypes (MLGs) differing from the original inoculated genotype. The novel genotypes probably orig-inated from a combination of windborne spores from neighbouring fields, infected seed and sexual recombination in the field. The rapid change in the genotypic composition of the Ptt population in this study suggests adaptive potential of novel genotypes and demonstrates the need for barley breeders to use multiple sources of host-plant resistance to safeguard against resistance being overcome. |
Keywords | barley breeding, Diversity Arrays Technology, gene flow, population genetics, sexual recombination, temporal changes |
ANZSRC Field of Research 2020 | 300409. Crop and pasture protection (incl. pests, diseases and weeds) |
Public Notes | Files associated with this item cannot be displayed due to copyright restrictions. |
Byline Affiliations | Centre for Crop Health |
Agriculture Victoria | |
Department of Agriculture and Fisheries, Queensland | |
Institution of Origin | University of Southern Queensland |
https://research.usq.edu.au/item/q589w/genetic-structure-of-a-pyrenophora-teres-f-teres-population-over-time-in-an-australian-barley-field-as-revealed-by-diversity-arrays-technology-markers
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