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 400073
Title Population structure of Cylindrocladium parasiticum peanuts (Arachis hypogaea) in Georgia, USA
Author(s) Wright, M.J.; Davis, A.J.; Wingfield, B.D.; Crous, P.W.; Brenneman, T.; Wingfield, M.J.
Source European Journal of Plant Pathology 127 (2010)2. - ISSN 0929-1873 - p. 199 - 206.
Department(s) Laboratory of Phytopathology
Publication type Refereed Article in a scientific journal
Publication year 2010
Keyword(s) crotalariae - calonectria - diversity - networks - genetics - seed - dna
Abstract Cylindrocladium parasiticum is an important pathogen of peanut (Arachis hypogaea) causing the disease Cylindrocladium black rot. The genetic structure of this haploid pathogen was determined for populations associated with peanut in Georgia, USA. Ten polymorphic microsatellite markers were used to determine genetic and genotypic diversity among three sub-populations representing the geographic distribution of peanut production in Georgia. Among 200 isolates collected, only 10 unique multilocus haplotypes were identified, with one multilocus haplotype occurring 176 times. Although no evidence for random mating was observed, the existence of loops in a constructed haplotype network hint at the possibility of recombination events. The absence of random mating might therefore be attributed to the homothallic nature of C. parasiticum as well as the clonality of the population, without excluding the possible occurrence of recombination. Cylindrocladium parasiticum thus appears to consist of a genetically homogeneous population throughout Georgia with mainly clonal reproduction or inbreeding contributing to the observed population genetic structure.
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