A study using allozymes and PCR fingerprinting was conducted to estimate the genetic diversity of Italian populations of two economically important cultivated fungal taxa, Pleurotus eryngii and P. ferulae. Very little is known about the genetic diversity distribution pattern of these taxa. Heterozygote deficiency was observed at few loci; in fact the inbreeding coefficients were not high, which demonstrates that mechanisms restrain the inbreeding act at the local level. Estimates of genetic differentiation indicated a pattern of greater variation within, rather than between, populations. These results were supported by AMOVA analysis, which attributed a low proportion of the total genetic variation to large geographical scale divergence, and indicated that most of the genetic diversity was because of differences within populations. This distribution pattern of genetic variation of P. eryngii and P. ferulae populations seems to be the result of high gene flow, by efficient basidiospore dispersal, and outcrossing mechanisms, which restrain inbreeding within populations.

Genetic diversity and population structure of the Italian fungi belonging to the taxa Pleurotus eryngii (DC.:Fr.) Quèl and P. ferulae (DC.:Fr.) Quèl / Urbanelli, Sandra; V., Della Rosa; Fanelli, Corrado; Fabbri, Anna Adele; Reverberi, Massimo. - In: HEREDITY. - ISSN 0018-067X. - STAMPA. - 90:3(2003), pp. 253-259. [10.1038/sj.hdy.6800239]

Genetic diversity and population structure of the Italian fungi belonging to the taxa Pleurotus eryngii (DC.:Fr.) Quèl and P. ferulae (DC.:Fr.) Quèl

URBANELLI, Sandra;FANELLI, Corrado;FABBRI, Anna Adele;REVERBERI, Massimo
2003

Abstract

A study using allozymes and PCR fingerprinting was conducted to estimate the genetic diversity of Italian populations of two economically important cultivated fungal taxa, Pleurotus eryngii and P. ferulae. Very little is known about the genetic diversity distribution pattern of these taxa. Heterozygote deficiency was observed at few loci; in fact the inbreeding coefficients were not high, which demonstrates that mechanisms restrain the inbreeding act at the local level. Estimates of genetic differentiation indicated a pattern of greater variation within, rather than between, populations. These results were supported by AMOVA analysis, which attributed a low proportion of the total genetic variation to large geographical scale divergence, and indicated that most of the genetic diversity was because of differences within populations. This distribution pattern of genetic variation of P. eryngii and P. ferulae populations seems to be the result of high gene flow, by efficient basidiospore dispersal, and outcrossing mechanisms, which restrain inbreeding within populations.
2003
population genetics; allozyme; pleurotus; amova; genetic diversity; pcr fingerprinting
01 Pubblicazione su rivista::01a Articolo in rivista
Genetic diversity and population structure of the Italian fungi belonging to the taxa Pleurotus eryngii (DC.:Fr.) Quèl and P. ferulae (DC.:Fr.) Quèl / Urbanelli, Sandra; V., Della Rosa; Fanelli, Corrado; Fabbri, Anna Adele; Reverberi, Massimo. - In: HEREDITY. - ISSN 0018-067X. - STAMPA. - 90:3(2003), pp. 253-259. [10.1038/sj.hdy.6800239]
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11573/250169
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