Research article - Peer-reviewed, 2015
Sexual reproduction contributes to genotypic variation in the population of Puccinia graminis in Tajikistan
Berlin, Anna; Rahmatov, Mahbubjon; Muminjanov, Hafiz; Yuen, JonathanAbstract
Stem rust, caused by Puccinia graminis, is a potential threat to wheat production in Central Asia. To investigate if sexual reproduction is important for the epidemiology of the disease, the population biology of the fungus was studied. Samples of P. graminis were collected from six wheat fields and from wild oats within two of the wheat fields during the growing season of 2010. The population structure of P. graminis was investigated by evaluating a total of 121 single uredinia collected from wheat and wild oats, using nine polymorphic simple sequence repeat (SSR) markers. The results presented in this study indicate that there is a selection process by the grass host, in particular wheat, that favours certain clones, which in turn affects the population structure of P. graminis in Tajikistan. The genotypic variation was large, both within and between the wheat fields and three populations were in linkage equilibrium, indicating that sexual reproduction within the P. graminis population takes place. This leads to the conclusion that the presence of Berberis spp. in Tajikistan has an important role in the population dynamics of P. graminis within the country, even if the fungus must reproduce primarily in a clonal manner during most of the year. Results also confirm that the two formae speciales, P. graminis f. sp. tritici and P. graminis f. sp. avenae, are genetically different even if they were collected in the same field.Keywords
Avena fatua; Triticum aestivum; microsatellites; alternate host; Berberis spp; Puccinia graminis f. sp tritici; Puccinia graminis f. sp avenaePublished in
European Journal of Plant Pathology2015, volume: 141, number: 1, pages: 159-168
Publisher: SPRINGER
Authors' information
Swedish University of Agricultural Sciences, Department of Forest Mycology and Pathology
Swedish University of Agricultural Sciences, Department of Plant Breeding
Tajik Agrarian University Shirinsho Shotemur
Muminjanov, Hafiz
Tajik Agrarian University Shirinsho Shotemur
Swedish University of Agricultural Sciences, Department of Forest Mycology and Plant Pathology
UKÄ Subject classification
Genetics and Breeding
Botany
Agricultural Science
Publication Identifiers
DOI: https://doi.org/10.1007/s10658-014-0534-2
URI (permanent link to this page)
https://res.slu.se/id/publ/76179