The coexistence of generalist and specialist clonal lineages in natural populations of the Irish Famine pathogen Phytophthora infestans explains local adaptation to potato and tomato.
Identifieur interne : 000905 ( Main/Exploration ); précédent : 000904; suivant : 000906The coexistence of generalist and specialist clonal lineages in natural populations of the Irish Famine pathogen Phytophthora infestans explains local adaptation to potato and tomato.
Auteurs : Alexander Kröner [France] ; Romain Mabon [France] ; Roselyne Corbière [France] ; Josselin Montarry [France] ; Didier Andrivon [France]Source :
- Molecular ecology [ 1365-294X ] ; 2017.
Descripteurs français
- KwdFr :
- ADN fongique (génétique), Adaptation physiologique (génétique), Aptitude génétique (MeSH), Génotype (MeSH), Génétique des populations (MeSH), Lycopersicon esculentum (microbiologie), Maladies des plantes (microbiologie), Phytophthora infestans (génétique), Phénotype (MeSH), Répétitions microsatellites (MeSH), Solanum tuberosum (microbiologie).
- MESH :
English descriptors
- KwdEn :
- Adaptation, Physiological (genetics), DNA, Fungal (genetics), Genetic Fitness (MeSH), Genetics, Population (MeSH), Genotype (MeSH), Lycopersicon esculentum (microbiology), Microsatellite Repeats (MeSH), Phenotype (MeSH), Phytophthora infestans (genetics), Plant Diseases (microbiology), Solanum tuberosum (microbiology).
- MESH :
- chemical , genetics : DNA, Fungal.
- genetics : Adaptation, Physiological, Phytophthora infestans.
- microbiology : Lycopersicon esculentum, Plant Diseases, Solanum tuberosum.
- Genetic Fitness, Genetics, Population, Genotype, Microsatellite Repeats, Phenotype.
Abstract
Phytophthora infestans, causing late blight on Solanaceae, is a serious threat to potato and tomato crops worldwide. P. infestans populations sampled on either potato or tomato differ in genotypes and pathogenicity, suggesting niche exclusion in the field. We hypothesized that such niche separation can reflect differential host exploitation by different P. infestans genotypes. We thus compared genotypes and phenotypes in 21 isolates sampled on potato (n = 11) or tomato (n = 10). Typing at 12 microsatellite loci assigned potato isolates to the 13_A2, 6_A1 and 1_A1 lineages, and tomato isolates to the 23_A1, 2_A1 and unclassified multilocus genotypes. Cross-inoculations on potato and tomato leaflets showed that all isolates were pathogenic on both hosts. However, tomato isolates performed much better on tomato than did potato isolates, which performed better on potato than did tomato isolates, thus revealing a clear pattern of local adaptation. Potato isolates were significantly fitter on potato than on tomato, and are best described as potato specialists; tomato isolates appear to be generalists, with similar pathogenicity on both hosts. Niche separation in the field may thus result mainly from the large fitness gap on tomato between generalists and unadapted potato specialists, while the small, but significant fitness difference on potato between both types of isolates may prevent population invasion by generalists. Extreme specialization to potato seems very costly relative to performance loss on the alternative host. This study therefore shows that local adaptation and niche separation, commonly expected to involve and generate specialists, can occur with generalists.
DOI: 10.1111/mec.14004
PubMed: 28052487
Affiliations:
Links toward previous steps (curation, corpus...)
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Rheu</settlement></placeName></affiliation></author><author><name sortKey="Montarry, Josselin" sort="Montarry, Josselin" uniqKey="Montarry J" first="Josselin" last="Montarry">Josselin Montarry</name><affiliation wicri:level="3"><nlm:affiliation>INRA, IGEPP, 35650, Le Rheu, France.</nlm:affiliation><country xml:lang="fr">France</country><wicri:regionArea>INRA, IGEPP, 35650, Le Rheu</wicri:regionArea><placeName><region type="region" nuts="2">Région Bretagne</region><settlement type="city">Le Rheu</settlement></placeName></affiliation></author><author><name sortKey="Andrivon, Didier" sort="Andrivon, Didier" uniqKey="Andrivon D" first="Didier" last="Andrivon">Didier Andrivon</name><affiliation wicri:level="3"><nlm:affiliation>INRA, IGEPP, 35650, Le Rheu, France.</nlm:affiliation><country xml:lang="fr">France</country><wicri:regionArea>INRA, IGEPP, 35650, Le Rheu</wicri:regionArea><placeName><region type="region" nuts="2">Région Bretagne</region><settlement type="city">Le Rheu</settlement></placeName></affiliation></author></analytic><series><title level="j">Molecular ecology</title><idno type="eISSN">1365-294X</idno><imprint><date when="2017" type="published">2017</date></imprint></series></biblStruct></sourceDesc></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Adaptation, Physiological (genetics)</term><term>DNA, Fungal (genetics)</term><term>Genetic Fitness (MeSH)</term><term>Genetics, Population (MeSH)</term><term>Genotype (MeSH)</term><term>Lycopersicon esculentum (microbiology)</term><term>Microsatellite Repeats (MeSH)</term><term>Phenotype (MeSH)</term><term>Phytophthora infestans (genetics)</term><term>Plant Diseases (microbiology)</term><term>Solanum tuberosum (microbiology)</term></keywords><keywords scheme="KwdFr" xml:lang="fr"><term>ADN fongique (génétique)</term><term>Adaptation physiologique (génétique)</term><term>Aptitude génétique (MeSH)</term><term>Génotype (MeSH)</term><term>Génétique des populations (MeSH)</term><term>Lycopersicon esculentum (microbiologie)</term><term>Maladies des plantes (microbiologie)</term><term>Phytophthora infestans (génétique)</term><term>Phénotype (MeSH)</term><term>Répétitions microsatellites (MeSH)</term><term>Solanum tuberosum (microbiologie)</term></keywords><keywords scheme="MESH" type="chemical" qualifier="genetics" xml:lang="en"><term>DNA, Fungal</term></keywords><keywords scheme="MESH" qualifier="genetics" xml:lang="en"><term>Adaptation, Physiological</term><term>Phytophthora infestans</term></keywords><keywords scheme="MESH" qualifier="génétique" xml:lang="fr"><term>ADN fongique</term><term>Adaptation physiologique</term><term>Phytophthora infestans</term></keywords><keywords scheme="MESH" qualifier="microbiologie" xml:lang="fr"><term>Lycopersicon esculentum</term><term>Maladies des plantes</term><term>Solanum tuberosum</term></keywords><keywords scheme="MESH" qualifier="microbiology" xml:lang="en"><term>Lycopersicon esculentum</term><term>Plant Diseases</term><term>Solanum tuberosum</term></keywords><keywords scheme="MESH" xml:lang="en"><term>Genetic Fitness</term><term>Genetics, Population</term><term>Genotype</term><term>Microsatellite Repeats</term><term>Phenotype</term></keywords><keywords scheme="MESH" xml:lang="fr"><term>Aptitude génétique</term><term>Génotype</term><term>Génétique des populations</term><term>Phénotype</term><term>Répétitions microsatellites</term></keywords></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">Phytophthora infestans, causing late blight on Solanaceae, is a serious threat to potato and tomato crops worldwide. P. infestans populations sampled on either potato or tomato differ in genotypes and pathogenicity, suggesting niche exclusion in the field. We hypothesized that such niche separation can reflect differential host exploitation by different P. infestans genotypes. We thus compared genotypes and phenotypes in 21 isolates sampled on potato (n = 11) or tomato (n = 10). Typing at 12 microsatellite loci assigned potato isolates to the 13_A2, 6_A1 and 1_A1 lineages, and tomato isolates to the 23_A1, 2_A1 and unclassified multilocus genotypes. Cross-inoculations on potato and tomato leaflets showed that all isolates were pathogenic on both hosts. However, tomato isolates performed much better on tomato than did potato isolates, which performed better on potato than did tomato isolates, thus revealing a clear pattern of local adaptation. Potato isolates were significantly fitter on potato than on tomato, and are best described as potato specialists; tomato isolates appear to be generalists, with similar pathogenicity on both hosts. Niche separation in the field may thus result mainly from the large fitness gap on tomato between generalists and unadapted potato specialists, while the small, but significant fitness difference on potato between both types of isolates may prevent population invasion by generalists. Extreme specialization to potato seems very costly relative to performance loss on the alternative host. This study therefore shows that local adaptation and niche separation, commonly expected to involve and generate specialists, can occur with generalists.</div></front></TEI><pubmed><MedlineCitation Status="MEDLINE" Owner="NLM"><PMID Version="1">28052487</PMID><DateCompleted><Year>2017</Year><Month>05</Month><Day>12</Day></DateCompleted><DateRevised><Year>2017</Year><Month>05</Month><Day>12</Day></DateRevised><Article PubModel="Print-Electronic"><Journal><ISSN IssnType="Electronic">1365-294X</ISSN><JournalIssue CitedMedium="Internet"><Volume>26</Volume><Issue>7</Issue><PubDate><Year>2017</Year><Month>Apr</Month></PubDate></JournalIssue><Title>Molecular ecology</Title><ISOAbbreviation>Mol Ecol</ISOAbbreviation></Journal><ArticleTitle>The coexistence of generalist and specialist clonal lineages in natural populations of the Irish Famine pathogen Phytophthora infestans explains local adaptation to potato and tomato.</ArticleTitle><Pagination><MedlinePgn>1891-1901</MedlinePgn></Pagination><ELocationID EIdType="doi" ValidYN="Y">10.1111/mec.14004</ELocationID><Abstract><AbstractText>Phytophthora infestans, causing late blight on Solanaceae, is a serious threat to potato and tomato crops worldwide. P. infestans populations sampled on either potato or tomato differ in genotypes and pathogenicity, suggesting niche exclusion in the field. We hypothesized that such niche separation can reflect differential host exploitation by different P. infestans genotypes. We thus compared genotypes and phenotypes in 21 isolates sampled on potato (n = 11) or tomato (n = 10). Typing at 12 microsatellite loci assigned potato isolates to the 13_A2, 6_A1 and 1_A1 lineages, and tomato isolates to the 23_A1, 2_A1 and unclassified multilocus genotypes. Cross-inoculations on potato and tomato leaflets showed that all isolates were pathogenic on both hosts. However, tomato isolates performed much better on tomato than did potato isolates, which performed better on potato than did tomato isolates, thus revealing a clear pattern of local adaptation. Potato isolates were significantly fitter on potato than on tomato, and are best described as potato specialists; tomato isolates appear to be generalists, with similar pathogenicity on both hosts. Niche separation in the field may thus result mainly from the large fitness gap on tomato between generalists and unadapted potato specialists, while the small, but significant fitness difference on potato between both types of isolates may prevent population invasion by generalists. Extreme specialization to potato seems very costly relative to performance loss on the alternative host. This study therefore shows that local adaptation and niche separation, commonly expected to involve and generate specialists, can occur with generalists.</AbstractText><CopyrightInformation>© 2017 John Wiley & Sons Ltd.</CopyrightInformation></Abstract><AuthorList CompleteYN="Y"><Author ValidYN="Y"><LastName>Kröner</LastName><ForeName>Alexander</ForeName><Initials>A</Initials><AffiliationInfo><Affiliation>INRA, IGEPP, 35650, Le Rheu, France.</Affiliation></AffiliationInfo></Author><Author ValidYN="Y"><LastName>Mabon</LastName><ForeName>Romain</ForeName><Initials>R</Initials><AffiliationInfo><Affiliation>INRA, IGEPP, 35650, Le Rheu, France.</Affiliation></AffiliationInfo></Author><Author ValidYN="Y"><LastName>Corbière</LastName><ForeName>Roselyne</ForeName><Initials>R</Initials><AffiliationInfo><Affiliation>INRA, IGEPP, 35650, Le Rheu, France.</Affiliation></AffiliationInfo></Author><Author ValidYN="Y"><LastName>Montarry</LastName><ForeName>Josselin</ForeName><Initials>J</Initials><AffiliationInfo><Affiliation>INRA, IGEPP, 35650, Le Rheu, France.</Affiliation></AffiliationInfo></Author><Author ValidYN="Y"><LastName>Andrivon</LastName><ForeName>Didier</ForeName><Initials>D</Initials><Identifier Source="ORCID">http://orcid.org/0000-0002-0060-1231</Identifier><AffiliationInfo><Affiliation>INRA, IGEPP, 35650, Le Rheu, France.</Affiliation></AffiliationInfo></Author></AuthorList><Language>eng</Language><PublicationTypeList><PublicationType UI="D016428">Journal Article</PublicationType></PublicationTypeList><ArticleDate DateType="Electronic"><Year>2017</Year><Month>02</Month><Day>16</Day></ArticleDate></Article><MedlineJournalInfo><Country>England</Country><MedlineTA>Mol Ecol</MedlineTA><NlmUniqueID>9214478</NlmUniqueID><ISSNLinking>0962-1083</ISSNLinking></MedlineJournalInfo><ChemicalList><Chemical><RegistryNumber>0</RegistryNumber><NameOfSubstance UI="D004271">DNA, Fungal</NameOfSubstance></Chemical></ChemicalList><CitationSubset>IM</CitationSubset><MeshHeadingList><MeshHeading><DescriptorName UI="D000222" MajorTopicYN="N">Adaptation, Physiological</DescriptorName><QualifierName UI="Q000235" MajorTopicYN="Y">genetics</QualifierName></MeshHeading><MeshHeading><DescriptorName UI="D004271" MajorTopicYN="N">DNA, Fungal</DescriptorName><QualifierName UI="Q000235" MajorTopicYN="N">genetics</QualifierName></MeshHeading><MeshHeading><DescriptorName UI="D056084" MajorTopicYN="N">Genetic Fitness</DescriptorName></MeshHeading><MeshHeading><DescriptorName UI="D005828" MajorTopicYN="Y">Genetics, Population</DescriptorName></MeshHeading><MeshHeading><DescriptorName UI="D005838" MajorTopicYN="N">Genotype</DescriptorName></MeshHeading><MeshHeading><DescriptorName UI="D018551" MajorTopicYN="N">Lycopersicon esculentum</DescriptorName><QualifierName UI="Q000382" MajorTopicYN="Y">microbiology</QualifierName></MeshHeading><MeshHeading><DescriptorName UI="D018895" MajorTopicYN="N">Microsatellite Repeats</DescriptorName></MeshHeading><MeshHeading><DescriptorName UI="D010641" MajorTopicYN="N">Phenotype</DescriptorName></MeshHeading><MeshHeading><DescriptorName UI="D055750" MajorTopicYN="N">Phytophthora infestans</DescriptorName><QualifierName UI="Q000235" MajorTopicYN="Y">genetics</QualifierName></MeshHeading><MeshHeading><DescriptorName UI="D010935" MajorTopicYN="N">Plant Diseases</DescriptorName><QualifierName UI="Q000382" MajorTopicYN="N">microbiology</QualifierName></MeshHeading><MeshHeading><DescriptorName UI="D011198" MajorTopicYN="N">Solanum tuberosum</DescriptorName><QualifierName UI="Q000382" MajorTopicYN="Y">microbiology</QualifierName></MeshHeading></MeshHeadingList><KeywordList Owner="NOTNLM"><Keyword MajorTopicYN="N">Solanum lycopersicum
</Keyword><Keyword MajorTopicYN="N">Solanum tuberosum
</Keyword><Keyword MajorTopicYN="N">fitness</Keyword><Keyword MajorTopicYN="N">late blight</Keyword><Keyword MajorTopicYN="N">local adaptation</Keyword><Keyword MajorTopicYN="N">quantitative host specialization</Keyword></KeywordList></MedlineCitation><PubmedData><History><PubMedPubDate PubStatus="received"><Year>2016</Year><Month>06</Month><Day>10</Day></PubMedPubDate><PubMedPubDate PubStatus="revised"><Year>2016</Year><Month>10</Month><Day>24</Day></PubMedPubDate><PubMedPubDate PubStatus="accepted"><Year>2016</Year><Month>11</Month><Day>01</Day></PubMedPubDate><PubMedPubDate PubStatus="pubmed"><Year>2017</Year><Month>1</Month><Day>5</Day><Hour>6</Hour><Minute>0</Minute></PubMedPubDate><PubMedPubDate PubStatus="medline"><Year>2017</Year><Month>5</Month><Day>13</Day><Hour>6</Hour><Minute>0</Minute></PubMedPubDate><PubMedPubDate PubStatus="entrez"><Year>2017</Year><Month>1</Month><Day>5</Day><Hour>6</Hour><Minute>0</Minute></PubMedPubDate></History><PublicationStatus>ppublish</PublicationStatus><ArticleIdList><ArticleId IdType="pubmed">28052487</ArticleId><ArticleId IdType="doi">10.1111/mec.14004</ArticleId></ArticleIdList></PubmedData></pubmed><affiliations><list><country><li>France</li></country><region><li>Région Bretagne</li></region><settlement><li>Le Rheu</li></settlement></list><tree><country name="France"><region name="Région Bretagne"><name sortKey="Kroner, Alexander" sort="Kroner, Alexander" uniqKey="Kroner A" first="Alexander" last="Kröner">Alexander Kröner</name></region><name sortKey="Andrivon, Didier" sort="Andrivon, Didier" uniqKey="Andrivon D" first="Didier" last="Andrivon">Didier Andrivon</name><name sortKey="Corbiere, Roselyne" sort="Corbiere, Roselyne" uniqKey="Corbiere R" first="Roselyne" last="Corbière">Roselyne Corbière</name><name sortKey="Mabon, Romain" sort="Mabon, Romain" uniqKey="Mabon R" first="Romain" last="Mabon">Romain Mabon</name><name sortKey="Montarry, Josselin" sort="Montarry, Josselin" uniqKey="Montarry J" first="Josselin" last="Montarry">Josselin Montarry</name></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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