Genetic structure of European and Mediterranean maize borer populations on several wild and cultivated host plants
Identifieur interne : 009980 ( Main/Exploration ); précédent : 009979; suivant : 009981Genetic structure of European and Mediterranean maize borer populations on several wild and cultivated host plants
Auteurs : Laurianne Leniaud ; Philippe Audiot ; Denis Bourguet ; Brigitte Frérot ; Gilles Genestier ; Siu Fai Lee [Australie] ; Thibaut Malausa ; Anne-Hélène Le Pallec ; Marie-Claude Souqual ; Sergine Ponsard [France]Source :
- Entomologia Experimentalis et Applicata [ 0013-8703 ] ; 2006-07.
Descripteurs français
- Pascal (Inist)
- Wicri :
- geographic : France.
- topic : Maïs, Plante transgénique, Sorgho.
English descriptors
- KwdEn :
- Allele, Allele frequencies, Allelic differentiation, Animal population, Assortative mating, Bacillus thuringiensis, Bethenod, Biological sciences, Bontemps, Borer, Bourguet, Cantaloupe, Cereal crop, Cocklebur, Comparable densities, Comparative study, Cultivated plant, Different host plants, Dyatlova frolov, Eld, Environmental entomology, European corn borer, European corn borer ostrinia nubilalis, Evolution, Exact tests, France, Genetic, Genetic differentiation, Genetic isolation, Genetic population structure, Genetic structure, Genetic variability, Geographic distance, Hbdh, Heterozygosity, Host plant, Host plants, Host races, Larva, Leniaud, Lepidoptera, Locus, Maize, Maize borers, Maize group, Maize race, Martel, Microbial insecticide, Nonagrioides, Nubilalis, Ostrinia, Ostrinia nubilalis, Other host plants, Oviposition, Pest, Pheromone, Polymorphic, Polymorphic loci, Population genetics, Population structure, Protection agency, Resistance alleles, Rousset, Sensitivity resistance, Sesamia, Sesamia nonagrioides, Sorghum, Supplementary appendix, Transgenic plant, Weir cockerham, Wild plant, Zea mays.
- Teeft :
- Allele, Allele frequencies, Allelic differentiation, Assortative mating, Bethenod, Biological sciences, Bontemps, Borer, Bourguet, Cantaloupe, Cocklebur, Comparable densities, Different host plants, Dyatlova frolov, Eld, Environmental entomology, European corn borer, European corn borer ostrinia nubilalis, Exact tests, Genetic, Genetic differentiation, Genetic isolation, Genetic population structure, Genetic structure, Genetic variability, Geographic distance, Hbdh, Heterozygosity, Host plant, Host plants, Host races, Larva, Leniaud, Lepidoptera, Locus, Maize, Maize borers, Maize group, Maize race, Martel, Nonagrioides, Nubilalis, Ostrinia, Ostrinia nubilalis, Other host plants, Oviposition, Pheromone, Polymorphic, Polymorphic loci, Population structure, Protection agency, Resistance alleles, Rousset, Sesamia, Sesamia nonagrioides, Sorghum, Supplementary appendix, Weir cockerham.
Abstract
Target pests may become resistant to Bacillus thuringiensis (Bt) toxins produced by trangenic maize (Zea mays L.). Untreated refuge areas are set aside to conserve high frequencies of susceptibility alleles: a delay in resistance evolution is expected if susceptible individuals from refuges mate randomly with resistant individuals from Bt fields. In principle, refuges can be toxin‐free maize or any other plant, provided it hosts sufficiently large pest populations mating randomly with populations from Bt‐maize fields. Our aim was to examine the suitability of several cultivated or weedy plants [pepper (Capsicum frutescens L.), sorghum (Sorghum spec.), sunflower (Helianthus annuus L.), cocklebur (Xanthium spec.), cantaloupe (Cucumis melo L.), and hop (Humulus lupulus L.)] as refuges for Ostrinia nubilalis (Hübner) (Lepidoptera: Crambidae) and Sesamia nonagrioides Lefebvre (Lepidoptera: Noctuidae), two major maize pests in southern Europe. Larvae of both species were collected on these plants. Their genetic population structure was examined at several allozyme loci. We found little or no evidence for an influence of geographic distance, but detected a significant host‐plant effect on the genetic differentiation for both species. Ostrinia nubilalis populations from sunflower, pepper, cocklebur, and sorghum appear to belong to the same genetic entity as populations collected on maize, but to differ from populations on hop. Accordingly, females from pepper and cocklebur produced exclusively the ‘Z’ type sexual pheromone, which, in France, characterizes populations developing on maize. Qualitatively, these plants (except hop) could thus serve as refuges for O. nubilalis; however, they may be of little use quantitatively as they were found much less infested than maize. Sesamia nonagrioides populations on maize and sorghum reached comparable densities, but a slight genetic differentiation was detected between both. The degree of assortative mating between populations feeding on both hosts must therefore be assessed before sorghum can be considered as a suitable refuge for this species.
Url:
DOI: 10.1111/j.1570-7458.2006.00427.x
Affiliations:
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Ponsard</name><affiliation></affiliation><affiliation wicri:level="1"><country wicri:rule="url">France</country></affiliation></author></analytic><monogr></monogr><series><title level="j" type="main">Entomologia Experimentalis et Applicata</title><title level="j" type="alt">ENTOMOLOGIA EXPERIMENTALIS ET APPLICATA</title><idno type="ISSN">0013-8703</idno><idno type="eISSN">1570-7458</idno><imprint><biblScope unit="vol">120</biblScope><biblScope unit="issue">1</biblScope><biblScope unit="page" from="51">51</biblScope><biblScope unit="page" to="62">62</biblScope><biblScope unit="page-count">12</biblScope><publisher>Blackwell Publishing Ltd</publisher><pubPlace>Oxford, UK</pubPlace><date type="published" when="2006-07">2006-07</date></imprint><idno type="ISSN">0013-8703</idno></series></biblStruct></sourceDesc><seriesStmt><idno type="ISSN">0013-8703</idno></seriesStmt></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Allele</term><term>Allele frequencies</term><term>Allelic differentiation</term><term>Animal population</term><term>Assortative mating</term><term>Bacillus thuringiensis</term><term>Bethenod</term><term>Biological sciences</term><term>Bontemps</term><term>Borer</term><term>Bourguet</term><term>Cantaloupe</term><term>Cereal crop</term><term>Cocklebur</term><term>Comparable densities</term><term>Comparative study</term><term>Cultivated plant</term><term>Different host plants</term><term>Dyatlova frolov</term><term>Eld</term><term>Environmental entomology</term><term>European corn borer</term><term>European corn borer ostrinia nubilalis</term><term>Evolution</term><term>Exact tests</term><term>France</term><term>Genetic</term><term>Genetic differentiation</term><term>Genetic isolation</term><term>Genetic population structure</term><term>Genetic structure</term><term>Genetic variability</term><term>Geographic distance</term><term>Hbdh</term><term>Heterozygosity</term><term>Host plant</term><term>Host plants</term><term>Host races</term><term>Larva</term><term>Leniaud</term><term>Lepidoptera</term><term>Locus</term><term>Maize</term><term>Maize borers</term><term>Maize group</term><term>Maize race</term><term>Martel</term><term>Microbial insecticide</term><term>Nonagrioides</term><term>Nubilalis</term><term>Ostrinia</term><term>Ostrinia nubilalis</term><term>Other host plants</term><term>Oviposition</term><term>Pest</term><term>Pheromone</term><term>Polymorphic</term><term>Polymorphic loci</term><term>Population genetics</term><term>Population structure</term><term>Protection agency</term><term>Resistance alleles</term><term>Rousset</term><term>Sensitivity resistance</term><term>Sesamia</term><term>Sesamia nonagrioides</term><term>Sorghum</term><term>Supplementary appendix</term><term>Transgenic plant</term><term>Weir cockerham</term><term>Wild plant</term><term>Zea mays</term></keywords><keywords scheme="Pascal" xml:lang="fr"><term>Bacillus thuringiensis</term><term>Déprédateur</term><term>Etude comparative</term><term>Evolution</term><term>France</term><term>Génétique population</term><term>Insecticide microbien</term><term>Ostrinia nubilalis</term><term>Plante cultivée</term><term>Plante céréalière</term><term>Plante sauvage</term><term>Plante transgénique</term><term>Population animale</term><term>Sensibilité résistance</term><term>Sesamia nonagrioides</term><term>Zea mays</term></keywords><keywords scheme="Teeft" xml:lang="en"><term>Allele</term><term>Allele frequencies</term><term>Allelic differentiation</term><term>Assortative mating</term><term>Bethenod</term><term>Biological sciences</term><term>Bontemps</term><term>Borer</term><term>Bourguet</term><term>Cantaloupe</term><term>Cocklebur</term><term>Comparable densities</term><term>Different host plants</term><term>Dyatlova frolov</term><term>Eld</term><term>Environmental entomology</term><term>European corn borer</term><term>European corn borer ostrinia nubilalis</term><term>Exact tests</term><term>Genetic</term><term>Genetic differentiation</term><term>Genetic isolation</term><term>Genetic population structure</term><term>Genetic structure</term><term>Genetic variability</term><term>Geographic distance</term><term>Hbdh</term><term>Heterozygosity</term><term>Host plant</term><term>Host plants</term><term>Host races</term><term>Larva</term><term>Leniaud</term><term>Lepidoptera</term><term>Locus</term><term>Maize</term><term>Maize borers</term><term>Maize group</term><term>Maize race</term><term>Martel</term><term>Nonagrioides</term><term>Nubilalis</term><term>Ostrinia</term><term>Ostrinia nubilalis</term><term>Other host plants</term><term>Oviposition</term><term>Pheromone</term><term>Polymorphic</term><term>Polymorphic loci</term><term>Population structure</term><term>Protection agency</term><term>Resistance alleles</term><term>Rousset</term><term>Sesamia</term><term>Sesamia nonagrioides</term><term>Sorghum</term><term>Supplementary appendix</term><term>Weir cockerham</term></keywords><keywords scheme="Wicri" type="geographic" xml:lang="fr"><term>France</term></keywords><keywords scheme="Wicri" type="topic" xml:lang="fr"><term>Maïs</term><term>Plante transgénique</term><term>Sorgho</term></keywords></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">Target pests may become resistant to Bacillus thuringiensis (Bt) toxins produced by trangenic maize (Zea mays L.). Untreated refuge areas are set aside to conserve high frequencies of susceptibility alleles: a delay in resistance evolution is expected if susceptible individuals from refuges mate randomly with resistant individuals from Bt fields. In principle, refuges can be toxin‐free maize or any other plant, provided it hosts sufficiently large pest populations mating randomly with populations from Bt‐maize fields. Our aim was to examine the suitability of several cultivated or weedy plants [pepper (Capsicum frutescens L.), sorghum (Sorghum spec.), sunflower (Helianthus annuus L.), cocklebur (Xanthium spec.), cantaloupe (Cucumis melo L.), and hop (Humulus lupulus L.)] as refuges for Ostrinia nubilalis (Hübner) (Lepidoptera: Crambidae) and Sesamia nonagrioides Lefebvre (Lepidoptera: Noctuidae), two major maize pests in southern Europe. Larvae of both species were collected on these plants. Their genetic population structure was examined at several allozyme loci. We found little or no evidence for an influence of geographic distance, but detected a significant host‐plant effect on the genetic differentiation for both species. Ostrinia nubilalis populations from sunflower, pepper, cocklebur, and sorghum appear to belong to the same genetic entity as populations collected on maize, but to differ from populations on hop. Accordingly, females from pepper and cocklebur produced exclusively the ‘Z’ type sexual pheromone, which, in France, characterizes populations developing on maize. Qualitatively, these plants (except hop) could thus serve as refuges for O. nubilalis; however, they may be of little use quantitatively as they were found much less infested than maize. Sesamia nonagrioides populations on maize and sorghum reached comparable densities, but a slight genetic differentiation was detected between both. The degree of assortative mating between populations feeding on both hosts must therefore be assessed before sorghum can be considered as a suitable refuge for this species.</div></front></TEI><affiliations><list><country><li>Australie</li><li>France</li></country><region><li>Victoria (État)</li></region><settlement><li>Melbourne</li></settlement><orgName><li>Université de Melbourne</li></orgName></list><tree><noCountry><name sortKey="Audiot, Philippe" sort="Audiot, Philippe" uniqKey="Audiot P" first="Philippe" last="Audiot">Philippe Audiot</name><name sortKey="Bourguet, Denis" sort="Bourguet, Denis" uniqKey="Bourguet D" first="Denis" last="Bourguet">Denis Bourguet</name><name sortKey="Frerot, Brigitte" sort="Frerot, Brigitte" uniqKey="Frerot B" first="Brigitte" last="Frérot">Brigitte Frérot</name><name sortKey="Genestier, Gilles" sort="Genestier, Gilles" uniqKey="Genestier G" first="Gilles" last="Genestier">Gilles Genestier</name><name sortKey="Le Pallec, Anne Elene" sort="Le Pallec, Anne Elene" uniqKey="Le Pallec A" first="Anne-Hélène" last="Le Pallec">Anne-Hélène Le Pallec</name><name sortKey="Leniaud, Laurianne" sort="Leniaud, Laurianne" uniqKey="Leniaud L" first="Laurianne" last="Leniaud">Laurianne Leniaud</name><name sortKey="Malausa, Thibaut" sort="Malausa, Thibaut" uniqKey="Malausa T" first="Thibaut" last="Malausa">Thibaut Malausa</name><name sortKey="Souqual, Marie Laude" sort="Souqual, Marie Laude" uniqKey="Souqual M" first="Marie-Claude" last="Souqual">Marie-Claude Souqual</name></noCountry><country name="Australie"><region name="Victoria (État)"><name sortKey="Lee, Siu Fai" sort="Lee, Siu Fai" uniqKey="Lee S" first="Siu Fai" last="Lee">Siu Fai Lee</name></region></country><country name="France"><noRegion><name sortKey="Ponsard, Sergine" sort="Ponsard, Sergine" uniqKey="Ponsard S" first="Sergine" last="Ponsard">Sergine Ponsard</name></noRegion></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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