The wild tomato species Solanum chilense shows variation in pathogen resistance between geographically distinct populations.
Identifieur interne : 000898 ( Main/Exploration ); précédent : 000897; suivant : 000899The wild tomato species Solanum chilense shows variation in pathogen resistance between geographically distinct populations.
Auteurs : Remco Stam [Allemagne] ; Daniela Scheikl [Allemagne] ; Aurélien Tellier [Allemagne]Source :
- PeerJ [ 2167-8359 ] ; 2017.
Abstract
Wild tomatoes are a valuable source of disease resistance germplasm for tomato (Solanum lycopersicum) breeders. Many species are known to possess a certain degree of resistance against certain pathogens; however, evolution of resistance traits is yet poorly understood. For some species, like Solanum chilense, both differences in habitat and within species genetic diversity are very large. Here we aim to investigate the occurrence of spatially heterogeneous coevolutionary pressures between populations of S. chilense. We investigate the phenotypic differences in disease resistance within S. chilense against three common tomato pathogens (Alternaria solani, Phytophthora infestans and a Fusarium sp.) and confirm high degrees of variability in resistance properties between selected populations. Using generalised linear mixed models, we show that disease resistance does not follow the known demographic patterns of the species. Models with up to five available climatic and geographic variables are required to best describe resistance differences, confirming the complexity of factors involved in local resistance variation. We confirm that within S. chilense, resistance properties against various pathogens show a mosaic pattern and do not follow environmental patterns, indicating the strength of local pathogen pressures. Our study can form the basis for further investigations of the genetic traits involved.
DOI: 10.7717/peerj.2910
PubMed: 28133579
PubMed Central: PMC5248578
Affiliations:
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Many species are known to possess a certain degree of resistance against certain pathogens; however, evolution of resistance traits is yet poorly understood. For some species, like <i>Solanum chilense</i>, both differences in habitat and within species genetic diversity are very large. Here we aim to investigate the occurrence of spatially heterogeneous coevolutionary pressures between populations of <i>S. chilense</i>. We investigate the phenotypic differences in disease resistance within <i>S. chilense</i> against three common tomato pathogens (<i>Alternaria solani</i>, <i>Phytophthora infestans</i> and a <i>Fusarium sp</i>.) and confirm high degrees of variability in resistance properties between selected populations. Using generalised linear mixed models, we show that disease resistance does not follow the known demographic patterns of the species. Models with up to five available climatic and geographic variables are required to best describe resistance differences, confirming the complexity of factors involved in local resistance variation. We confirm that within <i>S. chilense</i>, resistance properties against various pathogens show a mosaic pattern and do not follow environmental patterns, indicating the strength of local pathogen pressures. Our study can form the basis for further investigations of the genetic traits involved.</div></front></TEI><pubmed><MedlineCitation Status="PubMed-not-MEDLINE" Owner="NLM"><PMID Version="1">28133579</PMID><DateRevised><Year>2020</Year><Month>10</Month><Day>01</Day></DateRevised><Article PubModel="Electronic-eCollection"><Journal><ISSN IssnType="Print">2167-8359</ISSN><JournalIssue CitedMedium="Print"><Volume>5</Volume><PubDate><Year>2017</Year></PubDate></JournalIssue><Title>PeerJ</Title><ISOAbbreviation>PeerJ</ISOAbbreviation></Journal><ArticleTitle>The wild tomato species <i>Solanum chilense</i> shows variation in pathogen resistance between geographically distinct populations.</ArticleTitle><Pagination><MedlinePgn>e2910</MedlinePgn></Pagination><ELocationID EIdType="doi" ValidYN="Y">10.7717/peerj.2910</ELocationID><Abstract><AbstractText>Wild tomatoes are a valuable source of disease resistance germplasm for tomato (<i>Solanum lycopersicum</i>) breeders. Many species are known to possess a certain degree of resistance against certain pathogens; however, evolution of resistance traits is yet poorly understood. For some species, like <i>Solanum chilense</i>, both differences in habitat and within species genetic diversity are very large. Here we aim to investigate the occurrence of spatially heterogeneous coevolutionary pressures between populations of <i>S. chilense</i>. We investigate the phenotypic differences in disease resistance within <i>S. chilense</i> against three common tomato pathogens (<i>Alternaria solani</i>, <i>Phytophthora infestans</i> and a <i>Fusarium sp</i>.) and confirm high degrees of variability in resistance properties between selected populations. Using generalised linear mixed models, we show that disease resistance does not follow the known demographic patterns of the species. Models with up to five available climatic and geographic variables are required to best describe resistance differences, confirming the complexity of factors involved in local resistance variation. We confirm that within <i>S. chilense</i>, resistance properties against various pathogens show a mosaic pattern and do not follow environmental patterns, indicating the strength of local pathogen pressures. Our study can form the basis for further investigations of the genetic traits involved.</AbstractText></Abstract><AuthorList CompleteYN="Y"><Author ValidYN="Y"><LastName>Stam</LastName><ForeName>Remco</ForeName><Initials>R</Initials><AffiliationInfo><Affiliation>Section of Population Genetics, Technical University of Munich , Freising , Germany.</Affiliation></AffiliationInfo></Author><Author ValidYN="Y"><LastName>Scheikl</LastName><ForeName>Daniela</ForeName><Initials>D</Initials><AffiliationInfo><Affiliation>Section of Population Genetics, Technical University of Munich , Freising , Germany.</Affiliation></AffiliationInfo></Author><Author ValidYN="Y"><LastName>Tellier</LastName><ForeName>Aurélien</ForeName><Initials>A</Initials><AffiliationInfo><Affiliation>Section of Population Genetics, Technical University of Munich , Freising , Germany.</Affiliation></AffiliationInfo></Author></AuthorList><Language>eng</Language><PublicationTypeList><PublicationType UI="D016428">Journal Article</PublicationType></PublicationTypeList><ArticleDate DateType="Electronic"><Year>2017</Year><Month>01</Month><Day>18</Day></ArticleDate></Article><MedlineJournalInfo><Country>United States</Country><MedlineTA>PeerJ</MedlineTA><NlmUniqueID>101603425</NlmUniqueID><ISSNLinking>2167-8359</ISSNLinking></MedlineJournalInfo><KeywordList Owner="NOTNLM"><Keyword MajorTopicYN="N">Alternaria</Keyword><Keyword MajorTopicYN="N">Fusarium</Keyword><Keyword MajorTopicYN="N">General liniarised mixed models</Keyword><Keyword MajorTopicYN="N">Phytopathology</Keyword><Keyword MajorTopicYN="N">Phytophthora</Keyword><Keyword MajorTopicYN="N">Wild tomato</Keyword></KeywordList><CoiStatement>The authors declare there are no competing interests.</CoiStatement></MedlineCitation><PubmedData><History><PubMedPubDate PubStatus="received"><Year>2016</Year><Month>09</Month><Day>20</Day></PubMedPubDate><PubMedPubDate 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sort="Scheikl, Daniela" uniqKey="Scheikl D" first="Daniela" last="Scheikl">Daniela Scheikl</name><name sortKey="Tellier, Aurelien" sort="Tellier, Aurelien" uniqKey="Tellier A" first="Aurélien" last="Tellier">Aurélien Tellier</name></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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