English   español  
Please use this identifier to cite or link to this item: http://hdl.handle.net/10261/199370
logo share SHARE logo core CORE   Add this article to your Mendeley library MendeleyBASE

Visualizar otros formatos: MARC | Dublin Core | RDF | ORE | MODS | METS | DIDL | DATACITE
Exportar a otros formatos:


Quantifying temporal change in plant population attributes: insights from a resurrection approach

AuthorsGómez, Rocío; Méndez-Vigo, Belén; Marcer, Arnald; Alonso-Blanco, Carlos; Picó, F. Xavier
KeywordsArabidopsis thaliana
broad sense heritability
field experiments
flowering time
microsatellite genotyping
resurrection approach
Issue DateOct-2018
PublisherOxford University Press
CitationAoB Plants 10(5): ply063 (2018)
AbstractRapid evolution in annual plants can be quantified by comparing phenotypic and genetic changes between past and contemporary individuals from the same populations over several generations. Such knowledge will help understand the response of plants to rapid environmental shifts, such as the ones imposed by global climate change. To that end, we undertook a resurrection approach in Spanish populations of the annual plant Arabidopsis thaliana that were sampled twice over a decade. Annual weather records were compared to their historical records to extract patterns of climatic shifts over time. We evaluated the differences between samplings in flowering time, a key life-history trait with adaptive significance, with a field experiment. We also estimated genetic diversity and differentiation based on neutral nuclear markers and nucleotide diversity in candidate flowering time (FRI and FLC) and seed dormancy (DOG1) genes. The role of genetic drift was estimated by computing effective population sizes with the temporal method. Overall, two climatic scenarios were detected: intense warming with increased precipitation and moderate warming with decreased precipitation. The average flowering time varied little between samplings. Instead, within-population variation in flowering time exhibited a decreasing trend over time. Substantial temporal changes in genetic diversity and differentiation were observed with both nuclear microsatellites and candidate genes in all populations, which were interpreted as the result of natural demographic fluctuations. We conclude that drought stress caused by moderate warming with decreased precipitation may have the potential to reduce within-population variation in key life-cycle traits, perhaps as a result of stabilizing selection on them, and to constrain the genetic differentiation over time. Besides, the demographic behaviour of populations probably accounts for the substantial temporal patterns of genetic variation, while keeping rather constant those of phenotypic variation.
Publisher version (URL)http://doi.org/10.1093/aobpla/ply063
Identifiersdoi: 10.1093/aobpla/ply063
e-issn: 2041-2851
Appears in Collections:(EBD) Artículos
(CNB) Artículos
(CREAF) Artículos
Files in This Item:
File Description SizeFormat 
quantifying_temporal_change_plant_population.pdf935,53 kBAdobe PDFThumbnail
Show full item record
Review this work

WARNING: Items in Digital.CSIC are protected by copyright, with all rights reserved, unless otherwise indicated.