Evidence map›Paper›PMID 24013386›Full record

ArticleAnnals of botany2013

Population genetics of Mediterranean and Saharan olives: geographic patterns of differentiation and evidence for early generations of admixture.

G Besnard, A El Bakkali, H Haouane, D Baali-Cherif, A Moukhli, B Khadari

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Article in Annals of botany, 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 37 papers.

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37citing papers in PubMed
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1 · What the graph read from it

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3 · Its place in the literature

Who cites it

37 citing papers in PubMed.

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  15. Microsatellite Markers in Olives (Foods (Basel, Switzerland) · 2021
    Review
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4 · The record

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5 · Who and what money

Authors and funding

6 authors.

G BesnardCNRS-UPS-ENFA, EDB, UMR 5174, Bât. 4R1, 31062 Toulouse cedex 9, France.
A El Bakkali
H Haouane
D Baali-Cherif
A Moukhli
B Khadari

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

BACKGROUND AND

aimsThe olive (Olea europaea subsp. europaea) was domesticated in the Mediterranean area but its wild relatives are distributed over three continents, from the Mediterranean basin to South Africa and south-western Asia. Recent studies suggested that this crop originated in the Levant while a secondary diversification occurred in most westward areas. A possible contribution of the Saharan subspecies (subsp. laperrinei) has been highlighted, but the data available were too limited to draw definite conclusions. Here, patterns of genetic differentiation in the Mediterranean and Saharan olives are analysed to test for recent admixture between these taxa.

methodsNuclear microsatellite and plastid DNA (ptDNA) data were compiled from previous studies and completed for a sample of 470 cultivars, 390 wild Mediterranean trees and 270 Saharan olives. A network was reconstructed for the ptDNA haplotypes, while a Bayesian clustering method was applied to identify the main gene pools in the data set and then simulate and test for early generations of admixture between Mediterranean and Saharan olives. KEY

resultsFour lineages of ptDNA haplotypes are recognized: three from the Mediterranean basin and one from the Sahara. Only one haplotype, primarily distributed in the Sahara, is shared between laperrinei and europaea. This haplotype is detected once in 'Dhokar', a cultivar from the Maghreb. Nuclear microsatellites show geographic patterns of genetic differentiation in the Mediterranean olive that reflect the primary origins of cultivars in the Levant, and indicate a high genetic differentiation between europaea and laperrinei. No first-generation hybrid between europaea and laperrinei is detected, but recent, reciprocal admixture between Mediterranean and Saharan subspecies is found in a few accessions, including 'Dhokar'.

conclusionsThis study reports for the first time admixture between Mediterranean and Saharan olives. Although its contribution remains limited, Laperrine's olive has been involved in the diversification of cultivated olives.

Indexed as

Gene PoolGeographyAfrica, NorthernAllelesBayes TheoremCell NucleusDNA, ChloroplastGenetics, PopulationGenetic VariationHaplotypesMediterranean RegionMicrosatellite RepeatsModels, GeneticMultigene FamilyOleaDNA, ChloroplastAdmixturedomesticationLaperrine's oliveMediterranean basinmicrosatelliteOlea europaeapopulation genetic simulationsSaharasecondary diversificationwild genetic resources

Identifiers

PMID24013386
PMCPMC3806528

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.