Genetic structure of Mycosphaerella fijiensis populations from australia, Papua New Guinea and the Pacific Islands
Identifieur interne : 00B175 ( Main/Exploration ); précédent : 00B174; suivant : 00B176Genetic structure of Mycosphaerella fijiensis populations from australia, Papua New Guinea and the Pacific Islands
Auteurs : H. L. Hayden [Australie] ; J. Carlier [France] ; E. A. B. Aitken [Australie]Source :
- Plant pathology [ 0032-0862 ] ; 2003.
Descripteurs français
- Pascal (Inist)
- Wicri :
- topic : Maladie, Culture tropicale.
English descriptors
- KwdEn :
Abstract
Single-copy restriction fragment length polymorphism (RFLP) markers were used to determine the genetic structure of Mycosphaerella fijiensis, the cause of black leaf streak (black Sigatoka) disease of banana and plantain, in the Torres Strait, Papua New Guinea (PNG), and the Pacific Islands. A moderate level of genetic variation was observed in all populations with genotypic diversity values of 60-78% of the theoretical maximum, and gene diversity (H) values between 0.269 and 0.336. All populations were at gametic equilibrium, and with the high level of genotypic diversity observed this indicated that sexual reproduction has a major role in the genetic structure of the M. fijiensis populations examined. Population differentiation was tested on several hierarchical scales. No evidence of population differentiation was observed between sites on Mer Island. A moderate level of population differentiation was observed within the Torres Strait, between Badu and Mer Islands (FST = 0.097). On a regional scale, the greatest differentiation was found between the populations of the Torres Strait and the Pacific. Populations from these regions were more closely related to the PNG population than to each other, suggesting they were founded in separate events from the same population.
Affiliations:
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Carlier</name><affiliation wicri:level="3"><inist:fA14 i1="02"><s1>UMR 385 Biologie et Génétique des Interactions Plante x Parasite, CIRAD, TA 40/02, Avenue Agropolis</s1><s2>34398, Montpellier</s2><s3>FRA</s3><sZ>2 aut.</sZ></inist:fA14><country>France</country><placeName><region type="region">Occitanie (région administrative)</region><region type="old region">Languedoc-Roussillon</region><settlement type="city">Montpellier</settlement></placeName></affiliation></author><author><name sortKey="Aitken, E A B" sort="Aitken, E A B" uniqKey="Aitken E" first="E. A. B." last="Aitken">E. A. B. Aitken</name><affiliation wicri:level="1"><inist:fA14 i1="01"><s1>Cooperative Research Centre for Tropical Plant Protection and Botany Department, University of Queensland</s1><s2>Brisbane, Queensland 4072</s2><s3>AUS</s3><sZ>1 aut.</sZ><sZ>3 aut.</sZ></inist:fA14><country>Australie</country><wicri:noRegion>Brisbane, Queensland 4072</wicri:noRegion></affiliation></author></titleStmt><publicationStmt><idno type="wicri:source">INIST</idno><idno type="inist">04-0237989</idno><date when="2003">2003</date><idno type="stanalyst">PASCAL 04-0237989 INIST</idno><idno type="RBID">Pascal:04-0237989</idno><idno type="wicri:Area/PascalFrancis/Corpus">004F30</idno><idno type="wicri:Area/PascalFrancis/Curation">001184</idno><idno type="wicri:Area/PascalFrancis/Checkpoint">004F57</idno><idno type="wicri:explorRef" wicri:stream="PascalFrancis" wicri:step="Checkpoint">004F57</idno><idno type="wicri:doubleKey">0032-0862:2003:Hayden H:genetic:structure:of</idno><idno type="wicri:Area/Main/Merge">00BF42</idno><idno type="wicri:Area/Main/Curation">00B175</idno><idno type="wicri:Area/Main/Exploration">00B175</idno></publicationStmt><sourceDesc><biblStruct><analytic><title xml:lang="en" level="a">Genetic structure of Mycosphaerella fijiensis populations from australia, Papua New Guinea and the Pacific Islands</title><author><name sortKey="Hayden, H L" sort="Hayden, H L" uniqKey="Hayden H" first="H. 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Carlier</name><affiliation wicri:level="3"><inist:fA14 i1="02"><s1>UMR 385 Biologie et Génétique des Interactions Plante x Parasite, CIRAD, TA 40/02, Avenue Agropolis</s1><s2>34398, Montpellier</s2><s3>FRA</s3><sZ>2 aut.</sZ></inist:fA14><country>France</country><placeName><region type="region">Occitanie (région administrative)</region><region type="old region">Languedoc-Roussillon</region><settlement type="city">Montpellier</settlement></placeName></affiliation></author><author><name sortKey="Aitken, E A B" sort="Aitken, E A B" uniqKey="Aitken E" first="E. A. B." last="Aitken">E. A. B. Aitken</name><affiliation wicri:level="1"><inist:fA14 i1="01"><s1>Cooperative Research Centre for Tropical Plant Protection and Botany Department, University of Queensland</s1><s2>Brisbane, Queensland 4072</s2><s3>AUS</s3><sZ>1 aut.</sZ><sZ>3 aut.</sZ></inist:fA14><country>Australie</country><wicri:noRegion>Brisbane, Queensland 4072</wicri:noRegion></affiliation></author></analytic><series><title level="j" type="main">Plant pathology</title><title level="j" type="abbreviated">Plant pathol.</title><idno type="ISSN">0032-0862</idno><imprint><date when="2003">2003</date></imprint></series></biblStruct></sourceDesc><seriesStmt><title level="j" type="main">Plant pathology</title><title level="j" type="abbreviated">Plant pathol.</title><idno type="ISSN">0032-0862</idno></seriesStmt></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Banana</term><term>Disease</term><term>Musa</term><term>Mycosphaerella fijiensis</term><term>Plant leaf</term><term>Plant pathology</term><term>Population structure</term><term>Restriction fragment length polymorphism</term><term>Tropical crop</term></keywords><keywords scheme="Pascal" xml:lang="fr"><term>Banane</term><term>Feuille végétal</term><term>Maladie</term><term>Structure population</term><term>Polymorphisme longueur fragment restriction</term><term>Phytopathologie</term><term>Musa</term><term>Mycosphaerella fijiensis</term><term>Culture tropicale</term></keywords><keywords scheme="Wicri" type="topic" xml:lang="fr"><term>Maladie</term><term>Culture tropicale</term></keywords></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">Single-copy restriction fragment length polymorphism (RFLP) markers were used to determine the genetic structure of Mycosphaerella fijiensis, the cause of black leaf streak (black Sigatoka) disease of banana and plantain, in the Torres Strait, Papua New Guinea (PNG), and the Pacific Islands. A moderate level of genetic variation was observed in all populations with genotypic diversity values of 60-78% of the theoretical maximum, and gene diversity (H) values between 0.269 and 0.336. All populations were at gametic equilibrium, and with the high level of genotypic diversity observed this indicated that sexual reproduction has a major role in the genetic structure of the M. fijiensis populations examined. Population differentiation was tested on several hierarchical scales. No evidence of population differentiation was observed between sites on Mer Island. A moderate level of population differentiation was observed within the Torres Strait, between Badu and Mer Islands (F<sub>ST</sub> = 0.097). On a regional scale, the greatest differentiation was found between the populations of the Torres Strait and the Pacific. Populations from these regions were more closely related to the PNG population than to each other, suggesting they were founded in separate events from the same population.</div></front></TEI><affiliations><list><country><li>Australie</li><li>France</li></country><region><li>Languedoc-Roussillon</li><li>Occitanie (région administrative)</li></region><settlement><li>Montpellier</li></settlement></list><tree><country name="Australie"><noRegion><name sortKey="Hayden, H L" sort="Hayden, H L" uniqKey="Hayden H" first="H. L." last="Hayden">H. L. Hayden</name></noRegion><name sortKey="Aitken, E A B" sort="Aitken, E A B" uniqKey="Aitken E" first="E. A. B." last="Aitken">E. A. B. Aitken</name></country><country name="France"><region name="Occitanie (région administrative)"><name sortKey="Carlier, J" sort="Carlier, J" uniqKey="Carlier J" first="J." last="Carlier">J. Carlier</name></region></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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