Geographic isolation and long-distance gene flow influence the genetic structure of the blue fan palm Brahea armata (Arecaceae).
Gene flow
Genetic structure
Microsatellite
Vicariance
cpDNA
Journal
Journal of plant research
ISSN: 1618-0860
Titre abrégé: J Plant Res
Pays: Japan
ID NLM: 9887853
Informations de publication
Date de publication:
May 2023
May 2023
Historique:
received:
17
06
2022
accepted:
01
02
2023
medline:
26
4
2023
pubmed:
12
3
2023
entrez:
11
3
2023
Statut:
ppublish
Résumé
The formation of the Baja California Peninsula (BCP) has impacted the microevolutionary dynamics of different species in ways that depend on biological traits such as dispersal capacity. Plants with relatively low levels of vagility have exhibited high genetic divergence between the BCP and Continental mainland. Brahea armata (Arecaceae) is a palm species inhabiting the northern part of the BCP and Sonora; its distribution occurs in isolated oases of vegetation. We aimed to evaluate the influence of the formation of the BCP on the genetic structure of B. armata using nuclear microsatellites and chloroplast markers (cpDNA) to compare patterns of genetic diversity and structure with previous published studies. Because gene flow through seeds is usually more limited compared to pollen flow, we expect to find stronger genetic structure at (cpDNA) than at nuclear markers. Moreover, larger genetic structure might also be explained by the smaller effective population size of cpDNA. We analyzed six microsatellite markers and two cpDNA regions. The main results indicated high levels of genetic differentiation among isolated populations located in the BCP, while low genetic differentiation was found between southern populations of the BCP and Sonora, suggesting long distance gene flow. In contrast, chloroplast markers indicated high levels of genetic structure between BCP and Sonora populations, suggesting asymmetrical gene flow between pollen (measured by nuclear microsatellites) and seed (cpDNA markers). This study provides valuable information on genetic diversity of B. armata that can be relevant for conservation and management; and develops microsatellites markers that can be transferred to other Brahea species.
Identifiants
pubmed: 36905462
doi: 10.1007/s10265-023-01445-9
pii: 10.1007/s10265-023-01445-9
doi:
Substances chimiques
DNA, Chloroplast
0
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM
Pagination
277-290Informations de copyright
© 2023. The Author(s) under exclusive licence to The Botanical Society of Japan.
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