Staff Publications

Staff Publications

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    'Staff publications' is the digital repository of Wageningen University & Research

    'Staff publications' contains references to publications authored by Wageningen University staff from 1976 onward.

    Publications authored by the staff of the Research Institutes are available from 1995 onwards.

    Full text documents are added when available. The database is updated daily and currently holds about 240,000 items, of which 72,000 in open access.

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Record number 437747
Title Large subclonal variation in Phytophthora infestans populations associated with Ecuadorian potato landraces
Author(s) Delgado, R.A.; Monteros-Altamiro, A.R.; Li, Y.; Visser, R.G.F.; Lee, T.A.J. van der; Vosman, B.
Source Plant Pathology 62 (2013). - ISSN 0032-0862 - p. 1081 - 1088.
DOI http://dx.doi.org/10.1111/ppa.12039
Department(s) Laboratory of Plant Breeding
PRI BIOINT Moleculair Phytopathology
WUR Plant Breeding
EPS
Publication type Refereed Article in a scientific journal
Publication year 2013
Keyword(s) late blight resistance - phenotypic variation - plant-pathogen - mating-type - virulence - diversity - solanum - tomato - genes - variability
Abstract The population of Phytophthora infestans on potato landraces in three provinces (Carchi, Chimborazo and Loja) of Ecuador was analysed. All isolates (n = 66) were of the A1 mating type. Simple sequence repeats (SSR) were used to assess the genetic diversity of the isolates. The P. infestans isolates from the potato landraces grouped in a single clade together with reference isolates belonging to the clonal lineage EC-1. In the 66 SSR profiles obtained, 31 multilocus genotypes were identified. The 66 isolates constituted 49 different races according to the Solanum demissum differential set ( R1 to R11). The P. infestans population was complex and virulent on 4 to 11 R genes. Analysis showed that the subclonal variation in the Ecuadorian EC-1 clone is increasing over time and is much larger than clonal variation in lineages in the Netherlands and Nicaragua, suggesting high mutation rates and little or no selection in Ecuador
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