Genetic Structure of Natural Populations of Agaricus bisporus, the Commercial Button Mushroom

Xu, Jianping; Kerrigan, Richard W.; Callac, Philippe; Horgen, Paul A.; Anderson, James B.

doi:10.1093/oxfordjournals.jhered.a023141

Cited by 65 publications

(52 citation statements)

References 18 publications

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“…For example, the two species mentioned above, A. bisporus and Tr. matsutake, had F ST values very similar to that reported here (Xu et al, 1997. For A. bisporus, two distinct elements were found in many natural environments: one cultivar-like and the other mostly native (Xu et al, 1997(Xu et al, , 1998.…”

Section: T Sha and Others 3464supporting

confidence: 74%

“…James et al, 1999;Xu et al, 2005). For example, in natural populations of the button mushroom Agaricus bisporus, the sharing of certain genotypes was found for strains from different regions, countries and even continents (Xu et al, 1997(Xu et al, , 1998. Because those genotypes were identical or very similar to cultivated strains, it was suggested that humanaided dispersal was responsible for such long-distance gene flow in A. bisporus.…”

Section: T Sha and Others 3464mentioning

confidence: 99%

“…For A. bisporus, two distinct elements were found in many natural environments: one cultivar-like and the other mostly native (Xu et al, 1997(Xu et al, , 1998. While the cultivarlike elements showed no genetic differentiation (see above discussion), the native elements were significantly differentiated among the regional and continental populations (Xu et al, 1997(Xu et al, , 1998. The significant genetic differentiation among local and regional populations of Th.…”

Section: T Sha and Others 3464mentioning

confidence: 99%

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Genetic diversity of the endemic gourmet mushroom Thelephora ganbajun from south-western China

Tao

Palanichamy

et al. 2008

Microbiology

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The ectomycorrhizal fungus Thelephora ganbajun is an endemic gourmet mushroom in Yunnan province, south-western China. However, despite its widespread consumer appeal, nutritional value and potential ecological role in natural forests, very little is known about its genetics, diversity and ecology. In this study, we investigated DNA sequence variation at the internal transcribed spacer (ITS) regions among 156 specimens collected from 23 sites of nine regions in Yunnan Province. Our analysis identified a total of 34 ITS haplotypes and these haplotypes were clustered into five distinct phylogenetic groups. The evolutionary divergences among these clades are similar to or greater than many known sister species pairs within the genus Thelephora and the closely related genus Tomentella. Among the 34 ITS haplotypes, 22 were represented by one specimen each and the remaining 12 were each shared by two or more specimens. The most common haplotype contained 68 specimens distributed in 21 of the 23 sites, a result consistent with gene flow among geographical populations. However, analysis of molecular variance (AMOVA) revealed low but significant genetic differentiation among local and regional populations. Interestingly, the Mantel test identified that the extent of genetic differentiation was not significantly correlated with geographical distance. Our study revealed significant genetic divergence within Th. ganbajun and limited but detectable gene flow among geographical populations of this endemic ectomycorrhizal gourmet mushroom.

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Section: T Sha and Others 3464supporting

confidence: 74%

Section: T Sha and Others 3464mentioning

confidence: 99%

Section: T Sha and Others 3464mentioning

confidence: 99%

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Genetic diversity of the endemic gourmet mushroom Thelephora ganbajun from south-western China

Tao

Palanichamy

et al. 2008

Microbiology

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“…The mating system in A. bisporus is controlled by one locus with multiple alleles (Xu et al, 1993(Xu et al, , 1996aImbernon et al, 1995). Homokaryons (i.e.…”

Section: Introductionmentioning

confidence: 99%

Fine-scale genetic analyses reveal unexpected spatial-temporal heterogeneity in two natural populations of the commercial mushroom Agaricus bisporus

Desmerger²,

Callac

2002

Microbiology

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This study examined the fine-scale genetic variation of the commercial mushroom, Agaricus bisporus, over 2 years at two sites in France. One site was a meadow fertilized with horse manure and disturbed regularly by humans ; the other was a Monterey cypress forest free of human disturbance. Altogether, 50 mushrooms were collected and analysed for mitochondrial and nuclear genetic variation marked by RFLPs and multilocus enzyme electrophoretic polymorphisms. Population samples from these two sites were genetically different and both sites contained high levels of genetic diversity. No identical genotypes were found at either site between the 2 years and there was little evidence for extensive vegetative clonality for this species. Contrary to expectations, very limited evidence of pseudohomothallic reproduction was found. Results from tests of Hardy-Weinberg equilibrium and genotypic equilibrium showed that outcrossing and recombination have played significant roles in both populations. The results demonstrated spatialtemporal genetic heterogeneity of A. bisporus in natural populations.

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“…DNA molecular markers, such as restriction fragment length polymorphism (RFLP) (Castle et al, 1987;Xu et al, 1997) and randomly amplifi ed polymorphic DNA (RAPD) (Zhang and Molina, 1995), confer reliable and feasible alternatives to the morphological markers and have been developed for studies of genetic diversity and strain genotyping in mushrooms. Although advantageous in some aspects, these markers bear several limitations in practice.…”

Section: Introductionmentioning

confidence: 99%

Development of AFLP markers and phylogenetic analysis in Hypsizygus marmoreus

Wang

Feng

et al. 2009

J. Gen. Appl. Microbiol.

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The present study was designed to develop a reliable experimental protocol for detecting and genotyping amplifi ed fragment length polymorphism (AFLP) markers in the commercially important edible mushroom Hypsizygus marmoreus; and to use the markers to evaluate the genetic polymorphisms and phylogenetic relationships among 19 strains of H. marmoreus. Using a set of ten primer pairs, 609 AFLP markers were identifi ed, of which 532 were found segregating among 19 cultivated varieties and laboratory stock strains. An estimate of genetic relationships among the varieties/strains based on the AFLP markers was obtained by primary phylogenetic analysis using UPGMA. Our data demonstrate abundant genetic variation in the natural population of H. marmoreus and facilitate further analysis of genetic divergence within the species. The present study is useful for understanding the genetic structure of this species and uncovering genetic control of economically important traits for effi cient breeding programs.

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Genetic Structure of Natural Populations of Agaricus bisporus, the Commercial Button Mushroom

Cited by 65 publications

References 18 publications

Genetic diversity of the endemic gourmet mushroom Thelephora ganbajun from south-western China

Genetic diversity of the endemic gourmet mushroom Thelephora ganbajun from south-western China

Fine-scale genetic analyses reveal unexpected spatial-temporal heterogeneity in two natural populations of the commercial mushroom Agaricus bisporus

Development of AFLP markers and phylogenetic analysis in Hypsizygus marmoreus

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