Quantitative trait loci controlling vegetative growth rate in the edible basidiomycete Pleurotus ostreatus.
Mycelium growth rate is a quantitative characteristic that exhibits continuous variation. This trait has applied interest, as growth rate is correlated with production yield and increased advantage against competitors. In this work, we studied growth rate variation in the edible basidiomycete Pleurotus ostreatus growing as monokaryotic or dikaryotic mycelium on Eger medium or on wheat straw. Our analysis resulted in identification of several genomic regions (quantitative trait loci [QTLs]) involved in the control of growth rate that can be mapped on the genetic linkage map of this fungus. In some cases monokaryotic and dikaryotic QTLs clustered at the same map position, indicating that there are principal genomic areas responsible for growth rate control. The availability of this linkage map of growth rate QTLs can help in the design of rational strain breeding programs based on genomic information.
Larraya
Luis M
LM
Departamento de Producción Agraria, Universidad Pública de Navarra, E-31006 Pamplona, Spain.
Idareta
Eneko
E
Arana
Dani
D
Ritter
Enrique
E
Pisabarro
Antonio G
AG
Ramírez
Lucia
L
D002874:Chromosome Mapping; D015825:Chromosomes, Fungal; D008040:Genetic Linkage; D014644:Genetic Variation; D020076:Pleurotus / Q000235:genetics / Q000254:growth & development*; D019655:Quantitative Trait, Heritable