Unconstrained gene flow between populations of a widespread epiphytic lichen Usnea subfloridana (Parmeliaceae, Ascomycota) in Estonia.
作者： Polina Degtjarenko , Tiiu Tõrra , Tiina Mandel , Liis Marmor , Andres Saag
DOI: 10.1016/J.FUNBIO.2018.03.013
关键词: Microsatellite 、 Evolutionary biology 、 Genetic diversity 、 Parmeliaceae 、 Biology 、 Spatial heterogeneity 、 Usnea 、 Gene flow 、 Population genetics 、 Species richness
摘要: Few studies have investigated the genetic diversity of populations common and widespread lichenized fungi using microsatellite markers, especially relationships between different measures environmental heterogeneity. The main aim our study was to investigate population genetics a mainly clonally reproducing Usnea subfloridana at landscape scale, focusing on comparison lichen within hemiboreal forest stands. Particular attention has been paid differentiation in two geographically distinct regions Estonia characteristics diversity. We genotyped 578 thalli from eleven seven specific fungal markers. Measures (allelic richness, Shannon's information index, Nei's unbiased diversity, clonal number multilocus genotypes, private alleles, minimum colonization events) were calculated compared populations. Shared haplotypes, gene flow AMOVA analyses suggest that unconstrained exchange genotypes exist remote Estonia. Stand age, mean circumference host tree, size site tree species composition did not show any significant influence allelic events U. subfloridana Therefore it concluded other factors habitat heterogeneity could probably more effect
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