DelabastideKroppPiche1995a

Référence

Delabastide, P.Y., Kropp, B.R. and Piche, Y. (1995) Population-Structure and Mycelial Phenotypic Variability of the Ectomycorrhizal Basidiomycete Laccaria Bicolor (Maire) Orton. Mycorrhiza, 5(5):371-379.

Résumé

Mating type allele distribution and phenotypic variability were investigated in field populations of Laccaria bicolor. Sporophores associated with Norway spruce (Picea abies), colonized by natural sources of inoculum and growing in a seed orchard, were sampled to obtain dikaryotic strains and assay their phenotypic variability for traits important to the symbiosis. Basidiospores were also collected for mating type analysis of different mycelia. Four sporophore mating types were identified containing seven A and five B factors. Outbreeding efficiency was estimated at 73.8% and the population was slightly inbred. Crosses with previously characterized L. bicolor strains from two nearby populations identified in total six sporophore mating types and ten A and nine B factors, for an estimated outbreeding efficiency (85.7%) similar to previous studies of more spatially disparate Laccaria spp. populations. Dikaryotic strains were rested for mycelial growth rate, as a measure of their competitive ability, on agar media containing a soluble (NaH2PO4), or an insoluble (CaH-PO4) phosphate source. Their ability to solubilize the latter was also tested to assess their relative capacity to access insoluble, inorganic phosphate. In most cases, significant variation was detected among strains from the same site for all variables. On three sites (VC4, VC5 and VC7), each determined previously to possess a uniform mycelial genotype, phenotypic variability was likely due to epigenetic variation among different strains of the same genotype. Possible evidence for di karyon-monokaryon crosses was observed in vivo on one sample site (VC2) where adjacent mycelia shared two mating factors. The phenotypic variability of different mycelial genotypes reflected their genetic variability observed as mating type allele diversity and underlined the importance of basidiospore dispersal in introducing new genotypes into the population. The reproductive strategies of L. bicolor are discussed and compared to those of other basidiomycete species.

Format EndNote

Vous pouvez importer cette référence dans EndNote.

Format BibTeX-CSV

Vous pouvez importer cette référence en format BibTeX-CSV.

Format BibTeX

Vous pouvez copier l'entrée BibTeX de cette référence ci-bas, ou l'importer directement dans un logiciel tel que JabRef .

@ARTICLE { DelabastideKroppPiche1995a,
    AUTHOR = { Delabastide, P.Y. and Kropp, B.R. and Piche, Y. },
    TITLE = { Population-Structure and Mycelial Phenotypic Variability of the Ectomycorrhizal Basidiomycete Laccaria Bicolor (Maire) Orton },
    JOURNAL = { Mycorrhiza },
    YEAR = { 1995 },
    VOLUME = { 5 },
    PAGES = { 371-379 },
    NUMBER = { 5 },
    NOTE = { Times Cited: 12 Article English Cited References Count: 66 Rr108 },
    ABSTRACT = { Mating type allele distribution and phenotypic variability were investigated in field populations of Laccaria bicolor. Sporophores associated with Norway spruce (Picea abies), colonized by natural sources of inoculum and growing in a seed orchard, were sampled to obtain dikaryotic strains and assay their phenotypic variability for traits important to the symbiosis. Basidiospores were also collected for mating type analysis of different mycelia. Four sporophore mating types were identified containing seven A and five B factors. Outbreeding efficiency was estimated at 73.8% and the population was slightly inbred. Crosses with previously characterized L. bicolor strains from two nearby populations identified in total six sporophore mating types and ten A and nine B factors, for an estimated outbreeding efficiency (85.7%) similar to previous studies of more spatially disparate Laccaria spp. populations. Dikaryotic strains were rested for mycelial growth rate, as a measure of their competitive ability, on agar media containing a soluble (NaH2PO4), or an insoluble (CaH-PO4) phosphate source. Their ability to solubilize the latter was also tested to assess their relative capacity to access insoluble, inorganic phosphate. In most cases, significant variation was detected among strains from the same site for all variables. On three sites (VC4, VC5 and VC7), each determined previously to possess a uniform mycelial genotype, phenotypic variability was likely due to epigenetic variation among different strains of the same genotype. Possible evidence for di karyon-monokaryon crosses was observed in vivo on one sample site (VC2) where adjacent mycelia shared two mating factors. The phenotypic variability of different mycelial genotypes reflected their genetic variability observed as mating type allele diversity and underlined the importance of basidiospore dispersal in introducing new genotypes into the population. The reproductive strategies of L. bicolor are discussed and compared to those of other basidiomycete species. },
    KEYWORDS = { laccaria bicolor clone development population ecology genetic variability reproductive strategies acid-phosphatase-activity fairy ring fungus somatic incompatibility heterobasidion-annosum spatial-distribution ribosomal DNA l-amethystina l-proxima suillus agaricales },
    OWNER = { brugerolles },
    TIMESTAMP = { 2007.12.05 },
}

********************************************************** ***************** Facebook Twitter *********************** **********************************************************

Abonnez-vous à
l'Infolettre du CEF!

********************************************************** ***************** Pub - Mycorhizes_2019 ****************** **********************************************************

********************************************************** ***************** Pub - Symphonies_Boreales ****************** **********************************************************

********************************************************** ***************** Boîte à trucs *************** **********************************************************

CEF-Référence
La référence vedette !

Jérémie Alluard (2016) Les statistiques au moments de la rédaction 

  • Ce document a pour but de guider les étudiants à intégrer de manière appropriée une analyse statistique dans leur rapport de recherche.

Voir les autres...