Estimating the genetic diversity and structure of Quercus trojana Webb populations in Italy by SSRs: implications for management and conservation

Tommaso La Mantia, Carla Caruso, Francesca Chiocchini, Maddalena Carabeo, Laura Bertini, Chiara Mattia, Claudia Mattioni, Marcello Cherubini, Marco Cosimo Simeone, Fiorella Villani

Risultato della ricerca: Articlepeer review

6 Citazioni (Scopus)

Abstract

Studying the genetic diversity and structure of the current forest populations is essential for evaluating the ability to survive to future biotic and abiotic changes and planning conservation strategies. Quercus trojana is an eastern Mediterranean tree species with a fragmented distribution range, and its westernmost outposts are located in southern Italy. The demand for timber and cropland over the centuries has severely reduced it s occurrence in this part of the range. We assessed the genetic diversity and structure of the extant Italian populations of Q. trojana and derived conservation guidelines. A total of 322 samples were genotyped with six polymorphic nuclear microsatellite markers. Our results reveale d a high genetic diversity in all populations, structured into two main gene pools, and a highly divergent single population. Based on the allelic richness and heterozygosity estimation, we identified populations which can be considered as valuable source material for conservation programs, and those requiring adequate measure to reestablish gene flow and reduce fragmentation. Finally, a comparison with a set of eastern Mediterranean samples indicated a relationship between the Italian and the Greek gene pool; different hypotheses on the Italian gene pool origin were discussed. The need to protect these marginal, disjunct populations was further reinforced.
Lingua originaleEnglish
pagine (da-a)331-339
Numero di pagine9
RivistaCanadian Journal of Forest Research
Volume47
Stato di pubblicazionePublished - 2017

All Science Journal Classification (ASJC) codes

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  • ???subjectarea.asjc.1100.1107???
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