CheneBelgiqueV2, Main, Merge, bibRecord, 000D33

Chloroplast DNA variation of white oaks in Italy

Identifieur interne : 000D33 ( Main/Merge ); précédent : 000D32; suivant : 000D34

Chloroplast DNA variation of white oaks in Italy

Auteurs : Silvia Fineschi [Italie] ; Daniela Taurchini [Italie] ; Paolo Grossoni [Italie] ; Remy J. Petit [France] ; Giovanni G. Vendramin [Italie]

Source :

Forest ecology and management [ 0378-1127 ] ; 2002.

RBID : Pascal:02-0172672

Descripteurs français

Pascal (Inist)
- Variabilité génétique, Diversité génétique, DNA chloroplastique, Variation géographique, Phylogenèse, Zone refuge, Dynamique végétation, Migration, Glaciation, Quercus robur, Quercus petraea, Quercus pubescens, Quercus frainetto, Italie, Corse, Sardaigne, Sicile, Dispersion, Haplotype, Paléobotanique, Péninsule Balkans, Polymorphisme.
Wicri :
- geographic : Italie, Collectivité territoriale de Corse.
- topic : Migration.

English descriptors

KwdEn :
- Balkan Peninsula, Chloroplast DNA, Corsica, Dispersion, Genetic diversity, Genetic variability, Geographical variation, Glaciation, Haplotype, Italy, Migration, Paleobotany, Phylogeny, Polymorphism, Quercus frainetto, Quercus petraea, Quercus pubescens, Quercus robur, Refuge, Sardinia, Sicily, Vegetation dynamics.

Abstract

Polymorphism in non-coding regions of the chloroplast genome was studied in four white oak species (Q. robur L., Q. petraea (Matt.) Liebl., Q. pubescens Willd. s.l., and Q. frainetto Ten.) in Italy (mainland and associated islands, including Corsica). A total of 924 trees (194 populations) was analysed. This data set also includes results previously obtained on 20 Italian and Corsican populations [Genetics 146 (1997) 1475]. Most of the sampled individuals were classified as Q. pubescens (73.5%). Thirty-four populations out of 194 (17.5%) were polymorphic. The level of population sub-division was very high, as expressed by the value of the coefficient G_ST = 0.870 (h_S = 0.100, h_T = 0.776). The highest value of total genetic diversity was calculated in Sardinia and in central Italy; the lowest in southern Italy. The highest values of differentiation among populations occurred in Sardinia (G_ST = 1), and in Corsica (0.927). We found evidence that the Italian oak populations of today mainly originated from Sicilian and Balkan refugia. Their origin and migration routes are more easily seen by considering data separately for the four sampling regions: the north, the centre, the south, and the three main islands. The C (=blue) lineage was common in the southern part of Italy. This may be a trace of a migration from the Balkans via the Adriatic bridge during quaternary cold periods. The northern part of the country had a set of haplotypes similar to the other Alpine regions. Most Sicilian populations are fixed for one of the two haplotypes that probably originated in the island: one spread over the whole Italian peninsula, whereas the other one did not reach the Alps. Results showed that the Appennines may have played a role in the distribution of the haplotypes western and eastern of the mountains chain.

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Le document en format XML

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<series><title level="j" type="main">Forest ecology and management</title>
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<profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Balkan Peninsula</term>
<term>Chloroplast DNA</term>
<term>Corsica</term>
<term>Dispersion</term>
<term>Genetic diversity</term>
<term>Genetic variability</term>
<term>Geographical variation</term>
<term>Glaciation</term>
<term>Haplotype</term>
<term>Italy</term>
<term>Migration</term>
<term>Paleobotany</term>
<term>Phylogeny</term>
<term>Polymorphism</term>
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<term>Quercus petraea</term>
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<term>Sardinia</term>
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<keywords scheme="Pascal" xml:lang="fr"><term>Variabilité génétique</term>
<term>Diversité génétique</term>
<term>DNA chloroplastique</term>
<term>Variation géographique</term>
<term>Phylogenèse</term>
<term>Zone refuge</term>
<term>Dynamique végétation</term>
<term>Migration</term>
<term>Glaciation</term>
<term>Quercus robur</term>
<term>Quercus petraea</term>
<term>Quercus pubescens</term>
<term>Quercus frainetto</term>
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<term>Corse</term>
<term>Sardaigne</term>
<term>Sicile</term>
<term>Dispersion</term>
<term>Haplotype</term>
<term>Paléobotanique</term>
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<term>Polymorphisme</term>
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<front><div type="abstract" xml:lang="en">Polymorphism in non-coding regions of the chloroplast genome was studied in four white oak species (Q. robur L., Q. petraea (Matt.) Liebl., Q. pubescens Willd. s.l., and Q. frainetto Ten.) in Italy (mainland and associated islands, including Corsica). A total of 924 trees (194 populations) was analysed. This data set also includes results previously obtained on 20 Italian and Corsican populations [Genetics 146 (1997) 1475]. Most of the sampled individuals were classified as Q. pubescens (73.5%). Thirty-four populations out of 194 (17.5%) were polymorphic. The level of population sub-division was very high, as expressed by the value of the coefficient G<sub>ST</sub>
 = 0.870 (h<sub>S</sub>
 = 0.100, h<sub>T</sub>
 = 0.776). The highest value of total genetic diversity was calculated in Sardinia and in central Italy; the lowest in southern Italy. The highest values of differentiation among populations occurred in Sardinia (G<sub>ST</sub>
 = 1), and in Corsica (0.927). We found evidence that the Italian oak populations of today mainly originated from Sicilian and Balkan refugia. Their origin and migration routes are more easily seen by considering data separately for the four sampling regions: the north, the centre, the south, and the three main islands. The C (=blue) lineage was common in the southern part of Italy. This may be a trace of a migration from the Balkans via the Adriatic bridge during quaternary cold periods. The northern part of the country had a set of haplotypes similar to the other Alpine regions. Most Sicilian populations are fixed for one of the two haplotypes that probably originated in the island: one spread over the whole Italian peninsula, whereas the other one did not reach the Alps. Results showed that the Appennines may have played a role in the distribution of the haplotypes western and eastern of the mountains chain.</div>
</front>
</TEI>
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<name sortKey="Grossoni, Paolo" sort="Grossoni, Paolo" uniqKey="Grossoni P" first="Paolo" last="Grossoni">Paolo Grossoni</name>
<name sortKey="Taurchini, Daniela" sort="Taurchini, Daniela" uniqKey="Taurchini D" first="Daniela" last="Taurchini">Daniela Taurchini</name>
<name sortKey="Vendramin, Giovanni G" sort="Vendramin, Giovanni G" uniqKey="Vendramin G" first="Giovanni G." last="Vendramin">Giovanni G. Vendramin</name>
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<country name="France"><region name="Nouvelle-Aquitaine"><name sortKey="Petit, Remy J" sort="Petit, Remy J" uniqKey="Petit R" first="Remy J." last="Petit">Remy J. Petit</name>
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Chloroplast DNA variation of white oaks in Italy

Chloroplast DNA variation of white oaks in Italy

Source :

Descripteurs français

English descriptors

Abstract

Links toward previous steps (curation, corpus...)

Links to Exploration step

Le document en format XML

Pour manipuler ce document sous Unix (Dilib)

Pour mettre un lien sur cette page dans le réseau Wicri