Temporal and spatial genetic structure in Vitellaria paradoxa (shea tree) in an agroforestry system in southern Mali
Identifieur interne : 000152 ( France/Analysis ); précédent : 000151; suivant : 000153Temporal and spatial genetic structure in Vitellaria paradoxa (shea tree) in an agroforestry system in southern Mali
Auteurs : Bokary Allaye Kelly ; Olivier Hardy ; Jean-Marc Bouvet [France]Source :
- Molecular Ecology [ 0962-1083 ] ; 2004-05.
English descriptors
- KwdEn :
Abstract
Ten microsatellite loci were used to investigate the impact of human activity on the spatial and temporal genetic structure of Vitellaria paradoxa (Sapotaceae), a parkland tree species in agroforestry systems in southern Mali. Two stands (forest and fallow) and three cohorts (adults, juveniles and natural regeneration) in each stand were studied to: (i) compare their levels of genetic diversity (gene diversity, HE; allelic richness, Rs; and inbreeding, FIS); (ii) assess their genetic differentiation (FST); and (iii) compare their levels of spatial genetic structuring. Gene diversity parameters did not vary substantially among stands or cohorts, and tests for bottleneck events were nonsignificant. The inbreeding coefficients were not significantly different from zero in most cases (FIS = −0.025 in forest and 0.045 in fallow), suggesting that the species is probably outbreeding. There was a weak decrease in FIS with age, suggesting inbreeding depression. Differentiation of stands within each cohort was weak (FST = 0.026, 0.0005, 0.010 for adults, juveniles and regeneration, respectively), suggesting extensive gene flow. Cohorts within each stand were little differentiated (FST = −0.001 and 0.001 in forest and fallow, respectively). The spatial genetic structure was more pronounced in fallow than in forest where adults showed no spatial structuring. In conclusion, despite the huge influence of human activity on the life cycle of Vitellaria paradoxa growing in parkland systems, the impact on the pattern of genetic variation at microsatellite loci appears rather limited, possibly due to the buffering effect of extensive gene flow between unmanaged and managed populations.
Url:
DOI: 10.1111/j.1365-294X.2004.02144.x
Affiliations:
Links toward previous steps (curation, corpus...)
- to stream Istex, to step Corpus: 000309
- to stream Istex, to step Curation: 000309
- to stream Istex, to step Checkpoint: 000733
- to stream Main, to step Merge: 000B21
- to stream Main, to step Curation: 000B07
- to stream Main, to step Exploration: 000B07
- to stream France, to step Extraction: 00152
Links to Exploration step
ISTEX:74E48EF473A64E5E860C6E1C87BF1019140845C5Le document en format XML
<record><TEI wicri:istexFullTextTei="biblStruct"><teiHeader><fileDesc><titleStmt><title xml:lang="en">Temporal and spatial genetic structure in Vitellaria paradoxa (shea tree) in an agroforestry system in southern Mali</title><author><name sortKey="Allaye Kelly, Bokary" sort="Allaye Kelly, Bokary" uniqKey="Allaye Kelly B" first="Bokary" last="Allaye Kelly">Bokary Allaye Kelly</name></author><author><name sortKey="Hardy, Olivier" sort="Hardy, Olivier" uniqKey="Hardy O" first="Olivier" last="Hardy">Olivier Hardy</name></author><author><name sortKey="Bouvet, Jean Arc" sort="Bouvet, Jean Arc" uniqKey="Bouvet J" first="Jean-Marc" last="Bouvet">Jean-Marc Bouvet</name></author></titleStmt><publicationStmt><idno type="wicri:source">ISTEX</idno><idno type="RBID">ISTEX:74E48EF473A64E5E860C6E1C87BF1019140845C5</idno><date when="2004" year="2004">2004</date><idno type="doi">10.1111/j.1365-294X.2004.02144.x</idno><idno type="url">https://api.istex.fr/document/74E48EF473A64E5E860C6E1C87BF1019140845C5/fulltext/pdf</idno><idno type="wicri:Area/Istex/Corpus">000309</idno><idno type="wicri:explorRef" wicri:stream="Istex" wicri:step="Corpus" wicri:corpus="ISTEX">000309</idno><idno type="wicri:Area/Istex/Curation">000309</idno><idno type="wicri:Area/Istex/Checkpoint">000733</idno><idno type="wicri:explorRef" wicri:stream="Istex" wicri:step="Checkpoint">000733</idno><idno type="wicri:doubleKey">0962-1083:2004:Allaye Kelly B:temporal:and:spatial</idno><idno type="wicri:Area/Main/Merge">000B21</idno><idno type="wicri:Area/Main/Curation">000B07</idno><idno type="wicri:Area/Main/Exploration">000B07</idno><idno type="wicri:Area/France/Extraction">00152</idno></publicationStmt><sourceDesc><biblStruct><analytic><title level="a" type="main" xml:lang="en">Temporal and spatial genetic structure in Vitellaria paradoxa (shea tree) in an agroforestry system in southern Mali</title><author><name sortKey="Allaye Kelly, Bokary" sort="Allaye Kelly, Bokary" uniqKey="Allaye Kelly B" first="Bokary" last="Allaye Kelly">Bokary Allaye Kelly</name><affiliation><wicri:noCountry code="subField"></wicri:noCountry></affiliation></author><author><name sortKey="Hardy, Olivier" sort="Hardy, Olivier" uniqKey="Hardy O" first="Olivier" last="Hardy">Olivier Hardy</name><affiliation><wicri:noCountry code="subField"></wicri:noCountry></affiliation></author><author><name sortKey="Bouvet, Jean Arc" sort="Bouvet, Jean Arc" uniqKey="Bouvet J" first="Jean-Marc" last="Bouvet">Jean-Marc Bouvet</name><affiliation wicri:level="1"><country xml:lang="fr">France</country><wicri:regionArea>Cirad–Forêt, Campus International de Baillarguet, TA 10C, BP 5035, 34398 Montpellier, cédex</wicri:regionArea><wicri:noRegion>cédex</wicri:noRegion><wicri:noRegion>cédex</wicri:noRegion></affiliation><affiliation wicri:level="1"><country wicri:rule="url">France</country></affiliation></author></analytic><monogr></monogr><series><title level="j">Molecular Ecology</title><idno type="ISSN">0962-1083</idno><idno type="eISSN">1365-294X</idno><imprint><publisher>Blackwell Science Ltd</publisher><pubPlace>Oxford, UK</pubPlace><date type="published" when="2004-05">2004-05</date><biblScope unit="volume">13</biblScope><biblScope unit="issue">5</biblScope><biblScope unit="page" from="1231">1231</biblScope><biblScope unit="page" to="1240">1240</biblScope></imprint><idno type="ISSN">0962-1083</idno></series><idno type="istex">74E48EF473A64E5E860C6E1C87BF1019140845C5</idno><idno type="DOI">10.1111/j.1365-294X.2004.02144.x</idno><idno type="ArticleID">MEC2144</idno></biblStruct></sourceDesc><seriesStmt><idno type="ISSN">0962-1083</idno></seriesStmt></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>forest tree</term><term>gene flow</term><term>human impact</term><term>inbreeding coefficient</term><term>kinship coefficient</term><term>microsatellite</term></keywords></textClass><langUsage><language ident="en">en</language></langUsage></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">Ten microsatellite loci were used to investigate the impact of human activity on the spatial and temporal genetic structure of Vitellaria paradoxa (Sapotaceae), a parkland tree species in agroforestry systems in southern Mali. Two stands (forest and fallow) and three cohorts (adults, juveniles and natural regeneration) in each stand were studied to: (i) compare their levels of genetic diversity (gene diversity, HE; allelic richness, Rs; and inbreeding, FIS); (ii) assess their genetic differentiation (FST); and (iii) compare their levels of spatial genetic structuring. Gene diversity parameters did not vary substantially among stands or cohorts, and tests for bottleneck events were nonsignificant. The inbreeding coefficients were not significantly different from zero in most cases (FIS = −0.025 in forest and 0.045 in fallow), suggesting that the species is probably outbreeding. There was a weak decrease in FIS with age, suggesting inbreeding depression. Differentiation of stands within each cohort was weak (FST = 0.026, 0.0005, 0.010 for adults, juveniles and regeneration, respectively), suggesting extensive gene flow. Cohorts within each stand were little differentiated (FST = −0.001 and 0.001 in forest and fallow, respectively). The spatial genetic structure was more pronounced in fallow than in forest where adults showed no spatial structuring. In conclusion, despite the huge influence of human activity on the life cycle of Vitellaria paradoxa growing in parkland systems, the impact on the pattern of genetic variation at microsatellite loci appears rather limited, possibly due to the buffering effect of extensive gene flow between unmanaged and managed populations.</div></front></TEI><affiliations><list><country><li>France</li></country></list><tree><noCountry><name sortKey="Allaye Kelly, Bokary" sort="Allaye Kelly, Bokary" uniqKey="Allaye Kelly B" first="Bokary" last="Allaye Kelly">Bokary Allaye Kelly</name><name sortKey="Hardy, Olivier" sort="Hardy, Olivier" uniqKey="Hardy O" first="Olivier" last="Hardy">Olivier Hardy</name></noCountry><country name="France"><noRegion><name sortKey="Bouvet, Jean Arc" sort="Bouvet, Jean Arc" uniqKey="Bouvet J" first="Jean-Marc" last="Bouvet">Jean-Marc Bouvet</name></noRegion><name sortKey="Bouvet, Jean Arc" sort="Bouvet, Jean Arc" uniqKey="Bouvet J" first="Jean-Marc" last="Bouvet">Jean-Marc Bouvet</name></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
EXPLOR_STEP=$WICRI_ROOT/Wicri/Bois/explor/CheneBelgiqueV1/Data/France/Analysis
HfdSelect -h $EXPLOR_STEP/biblio.hfd -nk 000152 | SxmlIndent | more
Ou
HfdSelect -h $EXPLOR_AREA/Data/France/Analysis/biblio.hfd -nk 000152 | SxmlIndent | more
Pour mettre un lien sur cette page dans le réseau Wicri
{{Explor lien
|wiki= Wicri/Bois
|area= CheneBelgiqueV1
|flux= France
|étape= Analysis
|type= RBID
|clé= ISTEX:74E48EF473A64E5E860C6E1C87BF1019140845C5
|texte= Temporal and spatial genetic structure in Vitellaria paradoxa (shea tree) in an agroforestry system in southern Mali
}}
| This area was generated with Dilib version V0.6.27. |  |