Back to Search
Start Over
Inter-annual maintenance of the fine-scale genetic structure in a biennial plant
- Source :
- Scientific Reports
- Publication Year :
- 2016
- Publisher :
- Nature Publishing Group, 2016.
-
Abstract
- Within plant populations, space-restricted gene movement, together with environmental heterogeneity, can result in a spatial variation in gene frequencies. In biennial plants, inter-annual flowering migrants can homogenize gene frequencies between consecutive cohorts. However, the actual impact of these migrants on spatial genetic variation remains unexplored. Here, we used 10 nuclear microsatellite and one plastid genetic marker to characterize the spatial genetic structure within two consecutive cohorts in a population of the biennial plant Erysimum mediohispanicum (Brassicaceae). We explored the maintenance of this structure between consecutive flowering cohorts at different levels of complexity, and investigated landscape effects on gene flow. We found that cohorts were not genetically differentiated and showed a spatial genetic structure defined by a negative genetic-spatial correlation at fine scale that varied in intensity with compass directions. This spatial genetic structure was maintained when comparing plants from different cohorts. Additionally, genotypes were consistently associated with environmental factors such as light availability and soil composition, but to a lesser extent compared with the spatial autocorrelation. We conclude that inter-annual migrants, in combination with limited seed dispersal and environmental heterogeneity, play a major role in shaping and maintaining the spatial genetic structure among cohorts in this biennial plant.
- Subjects :
- 0106 biological sciences
0301 basic medicine
Genetic Markers
Seed dispersal
Population
Biology
010603 evolutionary biology
01 natural sciences
Article
03 medical and health sciences
Gene Frequency
Genetic variation
Plastids
Gene–environment interaction
education
Cell Nucleus
education.field_of_study
Principal Component Analysis
Multidisciplinary
fungi
food and beverages
15. Life on land
Models, Theoretical
030104 developmental biology
Genetics, Population
Evolutionary biology
Genetic marker
Genetic Loci
Genetic structure
Brassicaceae
Anisotropy
Biennial plant
Spatial variability
Gene-Environment Interaction
Subjects
Details
- Language :
- English
- ISSN :
- 20452322
- Database :
- OpenAIRE
- Journal :
- Scientific Reports
- Accession number :
- edsair.doi.dedup.....6f61a16e9e9b51663939600fbac6fbdf
- Full Text :
- https://doi.org/10.1038/srep37712