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Applied and Environmental Microbiology, December 2000, p. 5290-5300, Vol. 66, No. 12
0099-2240/00/$04.00+0
Copyright © 2000, American Society for Microbiology. All rights reserved.

Genetic Linkage Map of the Edible Basidiomycete Pleurotus ostreatus

Luis M. Larraya,1 Gúmer Pérez,1 Enrique Ritter,2 Antonio G. Pisabarro,1 and Lucía Ramírez1,*

Departamento de Producción Agraria, Universidad Pública de Navarra, Pamplona,1 and Neiker, Arkaute, Álava,2 Spain

Received 3 August 2000/Accepted 29 September 2000

We have constructed a genetic linkage map of the edible basidiomycete Pleurotus ostreatus (var. Florida). The map is based on the segregation of 178 random amplified polymorphic DNA and 23 restriction fragment length polymorphism markers; four hydrophobin, two laccase, and two manganese peroxidase genes; both mating type loci; one isozyme locus (est1); the rRNA gene sequence; and a repetitive DNA sequence in a population of 80 sibling monokaryons. The map identifies 11 linkage groups corresponding to the chromosomes of P. ostreatus, and it has a total length of 1,000.7 centimorgans (cM) with an average of 35.1 kbp/cM. The map shows a high correlation (0.76) between physical and genetic chromosome sizes. The number of crossovers observed per chromosome per individual cell is 0.89. This map covers nearly the whole genome of P. ostreatus.

* Corresponding author. Mailing address: Departamento de Producción Agraria, Universidad Pública de Navarra, E-31006 Pamplona, Spain. Phone: (34) 948 169 130. Fax: (34) 948 169 732. E-mail: lramirez{at}unavarra.es.

Applied and Environmental Microbiology, December 2000, p. 5290-5300, Vol. 66, No. 12
0099-2240/00/$04.00+0
Copyright © 2000, American Society for Microbiology. All rights reserved.


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