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 405677
Title Unusual features of the Botrytis cinerea mating system
Author(s) Kan, J.A.L. van; Dyer, P.S.; Kohn, L.M.
Source In: Book of Abstracts 26th Fungal Genetics Conference, Asilomar, Pacific Grove, California, USA, 15-20 March 2011. - - p. 212 - 212.
Event 26th Fungal Genetics Conference, Asilomar, Pacific Grove, California, USA, 2011-03-15/2011-03-20
Department(s) Laboratory of Phytopathology
Publication type Abstract in scientific journal or proceedings
Publication year 2011
Abstract Botrytis cinerea is a heterothallic ascomycete with two mating types, MAT1-1 and MAT1-2. Fragments of the MAT1- 2-1 and MAT1-1-1 genes were detected bordering idiomorphs of MAT1-1 and MAT1-2 isolates, respectively. Both these fragments encode truncated, non-functional proteins. B. cinerea has probably evolved from a homothallic ancestor containing all genes, with MAT1-1 and MAT1-2 arising from the loss of HMG and alpha-domain sequences, leaving the disabled gene fragments present in current loci. Two ORFs, designated MAT1-1-5 and MAT1-2-3, have not previously been reported from other fungi. In a cross of a MAT1-1-5 knockout mutant with a wild type MAT1-2 strain, the stipe develops normally but transition to the differentiation of a cup is blocked. Most B. cinerea isolates act in a standard heterothallic fashion, but some isolates can mate with both MAT1-1 and MAT1-2 isolates and are referred to as ‘dual maters’. Some dual mater isolates can self-fertilize and are truly homothallic. The MAT locus of five dual mater isolates was analysed. Four of those contain a MAT1-2 locus, without any part of the MAT1-1 locus being detected, whereas one homothallic isolate contains a MAT1-1 locus, without any part of the MAT1-2 locus being detected. We conclude that dual mating and homothallism are controlled by factors other than the MAT locus
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