In order to determine whether genetic architecture stems from pre-Pleistocene events or refugia, Chávez-Pesqueira and Núñez-Farfán assess genetic diversity and population dynamics of 19 populations of wild papaya...
Tag - gene flow
botanyone
Spatial distribution of genetic variation in the flower colour polymorphic Iris lutescens
Flower colour polymorphism in plants had been used as a classic model for understanding the importance of neutral processes versus natural selection in population differentiation. Iris lutescens (Iridaceae) is a...
High molecular diversity in rare European Sorbus domestica
Unexpectedly high levels of molecular diversity are found within populations of Sorbus domestica, irrespective of their location.
Analysis of population genetic structure and gene flow in an annual plant before and after a rapid evolutionary response to drought
Climate change can have widespread and devastating impacts, but little is known about the effects of this change on the genetics of natural populations. In a new study published in AoB PLANTS, Welt et al. aimed to...
AoBPLANTS
Pollen dispersal and breeding structure in Petunia
Results show that most pollen dispersal in subsp. axillaris occurs within populations and there is a high proportion of inbreeding.
Ongoing gene flow among Australian alpine Poa
Recently radiated groups pose a taxonomic challenge even with extensive molecular data, as they may be genetically differentiated only at small and/or patchy regions of the genome. Griffin and Hoffmann investigate...
Outcrossing rate of clonal Comarum palustre
Genetic diversity, and the effect of clone distribution, structure and size on the mating of bee-pollinated marsh cinquefoil, Comarum palustre (Rosaceae)
How important is gene flow?
There’s a handy article available from the American Journal of Botany that’s caught my eye: Is gene flow the most important evolutionary force in plants? by Norman C. Ellestrand. It opens with a strong...
Alun Salt
Speciation pattern and gene flow between three spruce species
The evolutionary relationships of present-day species are the result of genetic drift due geographical isolation, gene flow and mutations. Zou et al. use population genetic data to determine interspecific relationships...
Hydrochoric gene flow in invasive riparian Impatiens
Riparian systems are prone to invasion by alien plant species, which may be facilitated by hydrochory, the transport of seeds by water.
Measuring the flow of transgenes from GM crops into wild plants
How fast do transgenes move from crops into wild relatives via gene flow?
AJ Cann
Direct and reverse pollen-mediated gene flow between GM rice and red rice weed
The potential risks of genetically modified crops must be identified before their commercialization. In this context, several studies have reported the transfer of transgenes from transgenic rice to red rice weed...
Species coherence in a cytogenetically diverse sedge
Escudero et al. provide the first comprehensive study of population-level patterns of molecular and cytogenetic differentiation in the sedge genus Carex.
Pollen-mediated gene flow along an altitudinal gradient
Genetic connectivity is crucial in rapidly changing environments as it allows exchange and dispersal of adaptive genes among plant populations.
