Rapid evolution of selfing syndrome traits in Viola arvensis revealed by resurrection ecology.
Viola arvensis
Violaceae
pollinator decline
rapid adaptation
resurrection ecology
selfing syndrome
Journal
American journal of botany
ISSN: 1537-2197
Titre abrégé: Am J Bot
Pays: United States
ID NLM: 0370467
Informations de publication
Date de publication:
11 2022
11 2022
Historique:
revised:
13
05
2022
received:
05
01
2022
accepted:
13
05
2022
pubmed:
6
8
2022
medline:
30
11
2022
entrez:
5
8
2022
Statut:
ppublish
Résumé
As part of global change, climate warming and pollinator decline are expected to affect plant phenology and plant-pollinator interactions. This paper aims at characterizing rapid evolution of life history traits and floral traits over two decades in the wild pansy (Viola arvensis), a common weed in agrosystems. We used a resurrection ecology approach with genotypes sampled in 1991 and 2012 from a population in Burgundy (France). The species has a mixed mating system (hereafter: mixed selfer) and presents a floral polymorphism. To correct for maternal effects, we measured plant traits in the second generation in a common garden (after a refreshing generation) to characterize plant evolution during the two decades. In addition, historical population selfing rates in 1991 and 2012 were inferred from microsatellites markers through heterozygote deficiency and identity disequilibrium. Phenotypic data revealed a significant advance in flowering date, reduced flower sizes and a higher propensity of plants to set seed by autonomous selfing. Moreover, we detected a change in color morph frequency with an increase of the pale morph frequency. In accordance with phenotypic data, the neutral genetic data revealed an increase in historical selfing rates from 0.68 in 1991 to 0.86 in 2012. Taken together, such data suggest that the wild pansy, a mixed selfer, is evolving a selfing syndrome that may be the consequence of reduced pollinator activity in agrosystems.
Banques de données
Dryad
['10.5061/dryad.pvmcvdnp6']
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM
Pagination
1838-1846Informations de copyright
© 2022 Botanical Society of America.
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