<abstract xmlns="http://www.w3.org/1999/xhtml"><p> Species with fragmented populations and low population size often display low within-population genetic diversity and strong among-population differentiation. Laurus nobilis L. (Lauraceae), common laurel, has a scattered distribution throughout the Mediterranean, with only few autochthonous populations. Our goal was to elucidate if this species has range-wide genetic structure and if planted material can be traced back to its origin. Genetic diversity was investigated using 4 polymorphic nuclear microsatellites (nSSR) transferred from two species of Lauraceae. Sixty-six laurel trees were selected from 7 widely separated populations within the Mediterranean distribution area of the species. A total of 34 alleles (9 alleles per locus on average) were found. Mean genetic diversity within-population (Hs), was 0.558. Genetic differentiation among populations (GST = 0.243) was high compared to that of other angiosperms. Laurus nobilis can be separated into two main gene pools, one from western (Tunisia, Algeria and France) and the other from eastern Mediterranean (Turkey). The Algerian, Tunisian and French populations presented a strong genetic similarity, compatible with the fact that North African laurel populations could be recently introduced from north-western Mediterranean stock.</p></abstract>

Species with fragmented populations and low population size often display low within-population genetic diversity and strong among-population differentiation. Laurus nobilis L. (Lauraceae), common laurel, has a scattered distribution throughout the Mediterranean, with only few autochthonous populations. Our goal was to elucidate if this species has range-wide genetic structure and if planted material can be traced back to its origin. Genetic diversity was investigated using 4 polymorphic nuclear microsatellites (nSSR) transferred from two species of Lauraceae. Sixty-six laurel trees were selected from 7 widely separated populations within the Mediterranean distribution area of the species. A total of 34 alleles (9 alleles per locus on average) were found. Mean genetic diversity within-population (Hs), was 0.558. Genetic differentiation among populations (GST = 0.243) was high compared to that of other angiosperms. Laurus nobilis can be separated into two main gene pools, one from western (Tunisia, Algeria and France) and the other from eastern Mediterranean (Turkey). The Algerian, Tunisian and French populations presented a strong genetic similarity, compatible with the fact that North African laurel populations could be recently introduced from north-western Mediterranean stock.

Population Genetic Structure of Laurus nobilis L. Inferred From Transferred Nuclear Microsatellites

Silvae Genetica

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.

Species with fragmented populations and low population size often display low within-population genetic diversity and strong among-population differentiation....

Population Genetic Structure of Laurus nobilis L. Inferred From Transferred Nuclear Microsatellites

Publié en ligne: 19 oct. 2017

Pages: 270 - 276

Reçu: 13 oct. 2008

DOI: https://doi.org/10.1515/sg-2009-0034

Mots clés
Laurus nobilis, Nuclear microsatellites, Genetic diversity, Differentiation, Mediterranean.

© 2017

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.

Population Genetic Structure of Laurus nobilis L. Inferred From Transferred Nuclear Microsatellites

Publié en ligne: 19 oct. 2017

Pages: 270 - 276

Reçu: 13 oct. 2008

DOI: https://doi.org/10.1515/sg-2009-0034

Mots clésLaurus nobilis, Nuclear microsatellites, Genetic diversity, Differentiation, Mediterranean.

© 2017

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.

Mots clés
Laurus nobilis, Nuclear microsatellites, Genetic diversity, Differentiation, Mediterranean.