10.5061/DRYAD.55P22
Segarra-Moragues, José Gabriel
Centro de Investigaciones sobre Desertificación (CIDE-CSIC-UV-GV); C/
Carretera de Moncada-Náquera Km 4.5, Apartado Oficial E-46113 Moncada
Valencia Spain
Carrión Marco, Yolanda
University of the Basque Country
Castellanos, María Clara
University of Sussex
Molina, María José
Centro de Investigaciones sobre Desertificación (CIDE-CSIC-UV-GV); C/
Carretera de Moncada-Náquera Km 4.5, Apartado Oficial E-46113 Moncada
Valencia Spain
García-Fayos, Patricio
Centro de Investigaciones sobre Desertificación (CIDE-CSIC-UV-GV); C/
Carretera de Moncada-Náquera Km 4.5, Apartado Oficial E-46113 Moncada
Valencia Spain
Data from: Ecological and historical determinants of population genetic
structure and diversity in the Mediterranean shrub Rosmarinus officinalis
(Lamiaceae)
Dryad
dataset
2016
rosemary
Altitudinal gradients
population genetic structure
Quaternary
Rosmarinus officinalis
elevational gradients
Ecological gradients
Soil type
2016-09-28T00:00:00Z
2016-09-28T00:00:00Z
en
https://doi.org/10.1111/boj.12353
449536 bytes
1
CC0 1.0 Universal (CC0 1.0) Public Domain Dedication
Population genetic studies of widespread Mediterranean shrubs are scarce
compared with those of trees and narrow endemics or studies from
phylogeographical perspectives, despite the key role these species may
play in Mediterranean ecosystems. Knowledge on the effect of ecological
factors in shaping their genetic patterns is also limited. In this study
we investigate genetic diversity and population structure across 18
populations of Rosmarinus officinalis, a Mediterranean shrubland plant.
Populations were sampled along two elevational gradients, one each on
calcareous and siliceous soils in a mountain system in the eastern Iberian
Peninsula, to decipher the effect of ecological factors on the genetic
diversity and structure based on 11 microsatellite loci. We found overall
high levels of genetic diversity and weak population structure. Genetic
diversity increased with elevation, whereas population differentiation was
stronger among populations growing on siliceous soils. The nested analysis
of elevational gradients within soil types revealed that these general
patterns were mostly driven by siliceous populations, whereas calcareous
populations were more homogeneous along elevational belts. Bayesian
analysis of population structure revealed genetic membership of lowland
and high-elevation populations to different genetic clusters and a higher
admixture of intermediate-elevation populations to both clusters.
High-elevation populations were less differentiated from a hypothetical
ancestral cluster, suggesting the persistence of their gene pool during
the Pleistocene glaciations. In contrast, lowland populations resulted
from more recent divergence. We propose that life-history and reproductive
traits mostly contribute to explain the high levels of genetic diversity
and weak population structure, whereas ecological and historical factors
mostly contribute to the stronger differentiation of siliceous populations
and a rapid expansion of R. officinalis on calcareous soils possibly
mediated by human landscape transformations.
Rosmarinus officinalis genotypic dataContains gentotypic data of 1728
individuals (96 each from 18 populations) for eleven nuclear
microsatellite loci. For each individual, geographical coordinates are
given in two extra columns following the individual identification code.
Iberian Peninsula