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

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.

Analysis of population structure of Puccinia striiformis in Yunnan Province of China by using AFLP

“…Thus, based on the above information, the cultivars with these genes might lose resistance when leaves were infected by these pathogen populations in Yunnan Province. The reproduction phase of a pathogen is an important factor considered in studies of pathogen genetic structure (Urbanelli et al 2003). Clonal reproduction allows the most fit individuals to efficiently reproduce quickly and occupy the host.…”

The complete mitochondrial genome of the Basidiomycete edible fungus Pleurotus eryngii

“…Pleurotus eryngii is an edible mushroom with a high commercial value and has been widely cultivated in Europe, Middle East, North America, and Asia (Mandeel et al 2005). The genetic diversity and population structure of P. eryngii have been investigated in several studies (Urbanelli et al 2003(Urbanelli et al , 2007Abdollahzadeh et al 2007;Ro et al 2007;Zervakis et al 2014). However, little is known about the mitochondrial genome of this fungus.…”

SSR Markers for Trichoderma virens: Their Evaluation and Application to Identify and Quantify Root-Endophytic Strains

“…Based on 68 best differentiable alleles (Supplementary Material 2) and by dividing the sample set into two populations (five isolates from the Eurasian continent and five isolates from the rest of the world) analysis revealed that most molecular variance occurred within (96.92%), rather than between, populations (3.08%). This is quite a common observation in ubiquitously existing species and especially in sexually reproducing fungi with airborne ascospores [49,50]. Differentiation between populations in our study was detected at only four of the twelve loci (Table 1; L5, L6, L7 and L10) ranging between 2% and 15%.…”