10.5061/DRYAD.77K64
Harrison, Tia L.
University of Toronto
Wood, Corlett Wolfe
University of Toronto
Heath, Katy D.
University of Illinois System
Stinchcombe, John R.
University of Toronto
Data from: Geographically structured genetic variation in the Medicago
lupulina – Ensifer mutualism
Dryad
dataset
2017
Ensifer medicae
Medicago lupulina
Coevolution
invasions
Ensifer meliloti
2017-04-12T14:39:38Z
2017-04-12T14:39:38Z
en
https://doi.org/10.1111/evo.13268
11497289 bytes
1
CC0 1.0 Universal (CC0 1.0) Public Domain Dedication
Gene flow between genetically differentiated populations can maintain
variation in species interactions, especially when population structure is
congruent between interacting species. However, large-scale empirical
comparisons of the population structure of interacting species are rare,
particularly in positive interspecific interactions (mutualisms). One
agriculturally and ecologically important mutualism is the partnership
between legume plants and rhizobia. Through characterizing and comparing
the population genomic structure of the legume Medicago lupulina and two
rhizobial species (Ensifer medicae and E. meliloti), we explored the
spatial scale of population differentiation between interacting partners
in their introduced range in North America. We found high proportions of
E. meliloti in southeastern populations and high proportions of E. medicae
in northwestern populations. Medicago lupulina and the Ensifer genus
showed similar patterns of spatial genetic structure (isolation by
distance). However, we detected no evidence of isolation by distance or
population structure within either species of bacteria. Genome-wide
nucleotide diversity within each of the two Ensifer species was low,
suggesting limited introduction of strains, founder events, or severe
bottlenecks. Our results suggest that there is potential for
geographically structured coevolution between M. lupulina and the Ensifer
genus, but not between M. lupulina and either Ensifer species.
Emedicae_snpsVCF file containing SNPs for the species Ensifer
medicae.Emeliloti_snpsVCF file containing SNPs of the species Ensifer
melilotiEnsifer_genus_snpsVCF file containing common SNPs of species
Ensifer meliloti and Ensifer medicaeMlupulina_snpsVCF file containing SNPs
from the species Medicago lupulinaNucleotide_diversityPython script for
calculating nucleotide diversity values from a VCF file
Canada
United States