Genetic analysis of a popular Costa Rican palm suggests that its genetic diversity could suffer from human action.
Tag - gene flow
Fi Gennu
Genetic structure of the riparian invasive tree Robinia pseudoacacia
Can a better understanding of invasive tree migration help to improve management practices of riparian ecosystems?
William Salter
Interspecific hybridization between Camelina sativa and C. microcarpa
Work continues trying to boost Camelina's value as an oilseed crop.
Evolutionary history of Pseudotaxus: old lineage, young populations
In southeast China there is a puzzle. Pseudotaxus chienii lives as a relict, a plant that used to have a much wider geographic range. Now it’s limited to comparatively few locations. This is common for many plants that...
The mountains are getting warmer, and willow colonies are shrinking
Salix herbacea, as other arctic-alpine species, likely found a refuge from the Ice Age in the Apennines. As the climate changed around them, the trees survived in a fragmenting population. This fragmentation has genetic...
Alun Salt
AoBP special issue announcement: Population differentiation in plants
Plant populations continually change over space and time. Many factors contribute to this differentiation with some resulting in evolutionary change. Unravelling the relative importance of ecological and genetic...
Multiple parallel dispersal events and mosaic genetic structure in Dactylorhiza
Orchids have minute seeds and can disperse over long distances. Hedrén et al. use genetic markers to track how the marsh orchid Dactylorhiza majalis ssp. lapponica (Orchidaceae) colonised...
Alex Assiry
Population genetics of a plant and its parasitic pollinator moth
Many species exist on isolated habitats connected by dispersal of individuals. The evolutionary dynamics between two interacting species can be strongly influenced by the difference in mobility. Using highly variable...
Limited seed and pollen gene dispersal in Taxus baccata
Dispersal is crucial due to its direct impact on dynamics of a species’ distribution as well as having a role in shaping adaptive potential through gene flow. In plants forming scarce and small populations, knowledge...
Genetic diversity and structure of an endangered medicinal herb: implications for conservation
Human-driven habitat fragmentation leads to spatial isolation of endangered plant species, increasing extinction risk. Understanding genetic variability and population structure of rare and isolated plant species is of...
Island fragmentation and colonisation drove diversification of Aegean Nigella
Island organisms are generally understood to diverge through geographical (allopatric) speciation. This paradigm, however, might be too simplistic for continental islands that were connected with each other and/or the...
botanyone
Hypericum hybrids trapped in their polyploid gene pool
The underlying genetic causes of the switch to apomixes are not yet fully understood, but in Hypericum there is good evidence for the existence of ‘apomictic factors’.
Crop-wild introgression alters genetic structure of wild rice populations
Maintaining genetic integrity is essential for in situ and ex situ conservation of crop wild relative (CWR) species. However, introgression of crop alleles into CWR species/populations may change their genetic structure...
AoBPLANTS
Pollen-mediated gene flow in wild olive
Wild olive (Olea europaea subsp. europaea var. sylvestris, aka oleaster) populations are subject to increasing fragmentation and size reduction. Beghè et al. employ microsatellite markers and apply paternity analysis to...
