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

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 (H s ), was 0.558. Genetic differentiation among populations (G ST = 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 and variability inLindera glauca(Lauraceae) indicates low levels of genetic diversity and skewed sex ratios in natural populations in mainland China

“…In this study, sampling covered a large portion of the natural distribution, and overall genetic diversity across wild L. glauca populations exhibited low levels based on both nSSR (mean A R = 1.74, Ho = 0.33, He = 0.38, F IS = −0.14) and cpSSR (mean Nb = 2.06, Hrs = 0.39) loci. Our estimates of genetic diversity in L. glauca were almost half those of long-lived perennials (Ho = 0.63, He = 0.68), out-crossing species (Ho = 0.63, He = 0.65), and plants with wide distributions (Ho = 0.57, He = 0.62) (Nybom, 2004), which were lower than Laurus nobilis in Lauraceae (A R = 3.22, He = 0.56) (Marzouki et al, 2009). There are several major factors influencing variation that can result, each by itself or in combination, in the low levels of genetic variation observed in wild L. glauca populations.…”

Spatial genetic structure of the invasive tree Robinia pseudoacacia to determine migration patterns to inform best practices for riparian restoration

“…Although we employed fewer microsatellites than standard microsatellite studies, these markers reliably amplified our DNA. As several previous studies that focused on the gene flow of trees also employed four microsatellite loci ( Marzouki et al 2009 ; Nielsen and Kjær 2010 ; Pandey and Geburek 2010 , 2011 ), studying the evaluation of gene flow is possible.…”

Phytosynthesis of CuONPs via Laurus nobilis: Determination of antioxidant content, antibacterial activity, and dye decolorization potential

“…It has a spread distribution all over the Mediterranean. Linnaeus described L. nobilis as a using material from Italy and Greece in 1753; however, it is now regarded as native only to Turkey (Anatolia) and the Balkan Peninsula, based on the alkaloid contents [1, 2]. L. nobilis is propagated by seeds or by cuttings, which produce roots better in July/August, under Mediterranean conditions.…”