Guidelines for genetic monitoring of translocated plant populations |
| |
Authors: | Fabienne Van Rossum Olivier J Hardy |
| |
Institution: | 1. Meise Botanic Garden, Nieuwelaan 38, Meise, 1860 Belgium;2. Unit of Evolutionary Biology and Ecology, Université Libre de Bruxelles, Avenue F.D. Roosevelt 50, CP 160/12, Brussels, 1050 Belgium |
| |
Abstract: | Plant translocation is a useful tool for implementing assisted gene flow in recovery plans of critically endangered plant species. Although it helps to restore genetically viable populations, it is not devoid of genetic risks, such as poor adaptation of transplants and outbreeding depression in the hybrid progeny, which may have negative consequences in terms of demographic growth and plant fitness. Hence, a follow-up genetic monitoring should evaluate whether the translocated populations are genetically viable and self-sustaining in the short and long term. The causes of failure to adjust management responses also need to be identified. Molecular markers and fitness-related quantitative traits can be used to determine whether a plant translocation enhanced genetic diversity, increased fitness, and improved the probability of long-term survival. We devised guidelines and illustrated them with studies from the literature to help practitioners determine the appropriate genetic survey methods so that management practices can better integrate evolutionary processes. These guidelines include methods for sampling and for assessing changes in genetic diversity and differentiation, contemporary gene flow, mode of local recruitment, admixture level, the effects of genetic rescue, inbreeding or outbreeding depression and local adaptation on plant fitness, and long-term genetic changes. |
| |
Keywords: | admixture contemporary gene flow genetic rescue genetic restoration inbreeding depression outbreeding depression quantitative genetics reinforcement depresión por endogamia depresión por exogamia flujo génico contemporáneo genética cuantitativa mezcla reforzamiento rescate genético restauración genética |
|
|