@misc{10481/110251,
year = {2016},
month = {11},
url = {https://hdl.handle.net/10481/110251},
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.},
organization = {Grants from the Spanish Ministerio de Economia y
Competitividad (CGL2009-07015, CGL2012–34736, CGL2013-47558-P), including EU-FEDER funds, and Plan
Andaluz de Investigación (P11-RNM-7676) supported this study},
organization = {Fellowship (BES-2010-
030067) from MINECO},
organization = {FCT Investigador Programme and co-funded by the European
Program COMPETE: FCOMP-01-0124-FEDER-019772 and FCT-ANR/BIA-BIC/0010/2013},
publisher = {Springer Nature},
title = {Inter-annual maintenance of the fine-scale genetic structure in a biennial plant},
doi = {10.1038/srep37712},
author = {Valverde Morillas, Javier and Gómez, José María and García, Cristina and Sharbel, Timothy F and Jiménez Morales, María Noelia and Perfectti Álvarez, Francisco},
}