A carregar...
Publicação
Examining the spatiotemporal variation of genetic diversity and genetic rarity in the natural plant recolonization of human-altered areas
| Nome: | Descrição: | Tamanho: | Formato: | |
|---|---|---|---|---|
| 1.66 MB | Adobe PDF |
Orientador(es)
Resumo(s)
The spatiotemporal genetic variation at early plant life stages may substantially affect the natural recolonization of humanaltered
areas, which is crucial to understand plant and habitat conservation. In animal-dispersed plants, dispersers’ behavior
may critically drive the distribution of genetic variation. Here, we examine how genetic rarity is spatially and temporally
structured in seedlings of a keystone pioneer palm (Chamaerops humilis) and how the variation of genetic rarity could ultimately
affect plant recruitment. We intensively monitored the seed rain mediated by two medium-sized carnivores during
two consecutive seasons in a Mediterranean human-altered area. We genotyped 143 out of 309 detected seedlings using 12
microsatellite markers. We found that seedlings emerging from carnivore-dispersed seeds showed moderate to high levels
of genetic diversity and no evidence of inbreeding. We found inflated kinship among seedlings that emerged from seeds
within a single carnivore fecal sample, but a dilution of such FSGS at larger spatial scales (e.g. latrine). Seedlings showed a
significant genetic sub-structure and the sibling relationships varied depending on the spatial scale. Rare genotypes arrived
slightly later throughout the dispersal season and tended to be spatially isolated. However, genetic rarity was not a significant
predictor by itself which indicates that, at least, its influence on seedling survival was smaller than other spatiotemporal
factors. Our results suggest strong C. humilis resilience to genetic bottlenecks due to human disturbances. We highlight the
study of plant-animal interactions from a genetic perspective since it provides crucial information for plant conservation and
the recovery of genetic plant resilience.
Descrição
Palavras-chave
Seed dispersal Mediterranean human-altered areas Chamaerops humilis Pioneer plant Fine-scale spatial genetic structure Kinship Seedling recruitment
Contexto Educativo
Citação
Garrote, Pedro J., et al. “Examining the Spatiotemporal Variation of Genetic Diversity and Genetic Rarity in the Natural Plant Recolonization of Human-Altered Areas.” Conservation Genetics, vol. 24, no. 3, June 2023, pp. 315–30
Editora
Springer