Screening of wild potatoes identifies new sources of late blight resistance.
Identifieur interne : 000064 ( Main/Exploration ); précédent : 000063; suivant : 000065Screening of wild potatoes identifies new sources of late blight resistance.
Auteurs : Hari Karki ; Shelley Jansky [États-Unis] ; Dennis HaltermanSource :
- Plant disease [ 0191-2917 ] ; 2020.
Abstract
Late blight of potato is considered one of the most devastating plant diseases in the world. Most cultivated potatoes are susceptible to this disease. However, wild relatives of potatoes are an excellent source of late blight resistance. We screened 384 accessions of 68 different wild potato species available from the U.S. Potato GeneBank against the late blight pathogen Phytophthora infestans in a detached leaf assay (DLA). Although all plants in 271 accessions were susceptible, all screened plants in 39 accessions were resistant. A mixture of resistant and susceptible plants were found in 34 accessions. All tested plants showed a partial resistance phenotype in 2 accessions, segregation of resistant and partial resistant plants in 9 accessions, segregation of partially resistant and susceptible plants in 4 accessions as well as segregation of resistant, partially resistant and susceptible individuals in 25 accessions. We found several species that were never before reported to be resistant to late blight. These new species could provide novel sources of late blight resistance. P. infestans clonal lineage-specific screening of selected species was conducted to identify the presence of RB resistance. We found late blight resistant accessions in S. verrucosum, S. stoloniferum and S. morelliforme that were susceptible to the RB overcoming isolate NL13316, indicating the presence of RB-like resistance in these species.
DOI: 10.1094/PDIS-06-20-1367-RE
PubMed: 32755364
Affiliations:
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Most cultivated potatoes are susceptible to this disease. However, wild relatives of potatoes are an excellent source of late blight resistance. We screened 384 accessions of 68 different wild potato species available from the U.S. Potato GeneBank against the late blight pathogen <i>Phytophthora infestans</i> in a detached leaf assay (DLA). Although all plants in 271 accessions were susceptible, all screened plants in 39 accessions were resistant. A mixture of resistant and susceptible plants were found in 34 accessions. All tested plants showed a partial resistance phenotype in 2 accessions, segregation of resistant and partial resistant plants in 9 accessions, segregation of partially resistant and susceptible plants in 4 accessions as well as segregation of resistant, partially resistant and susceptible individuals in 25 accessions. We found several species that were never before reported to be resistant to late blight. These new species could provide novel sources of late blight resistance. <i>P. infestans</i> clonal lineage-specific screening of selected species was conducted to identify the presence of RB resistance. We found late blight resistant accessions in <i>S. verrucosum</i>, <i>S. stoloniferum</i> and <i>S. morelliforme</i> that were susceptible to the <i>RB</i> overcoming isolate NL13316, indicating the presence of <i>RB</i>-like resistance in these species.</div></front></TEI><pubmed><MedlineCitation Status="Publisher" Owner="NLM"><PMID Version="1">32755364</PMID><DateRevised><Year>2020</Year><Month>08</Month><Day>06</Day></DateRevised><Article PubModel="Print-Electronic"><Journal><ISSN IssnType="Print">0191-2917</ISSN><JournalIssue CitedMedium="Print"><PubDate><Year>2020</Year><Month>Aug</Month><Day>05</Day></PubDate></JournalIssue><Title>Plant disease</Title><ISOAbbreviation>Plant Dis</ISOAbbreviation></Journal><ArticleTitle>Screening of wild potatoes identifies new sources of late blight resistance.</ArticleTitle><ELocationID EIdType="doi" ValidYN="Y">10.1094/PDIS-06-20-1367-RE</ELocationID><Abstract><AbstractText>Late blight of potato is considered one of the most devastating plant diseases in the world. Most cultivated potatoes are susceptible to this disease. However, wild relatives of potatoes are an excellent source of late blight resistance. We screened 384 accessions of 68 different wild potato species available from the U.S. Potato GeneBank against the late blight pathogen <i>Phytophthora infestans</i> in a detached leaf assay (DLA). Although all plants in 271 accessions were susceptible, all screened plants in 39 accessions were resistant. A mixture of resistant and susceptible plants were found in 34 accessions. All tested plants showed a partial resistance phenotype in 2 accessions, segregation of resistant and partial resistant plants in 9 accessions, segregation of partially resistant and susceptible plants in 4 accessions as well as segregation of resistant, partially resistant and susceptible individuals in 25 accessions. We found several species that were never before reported to be resistant to late blight. These new species could provide novel sources of late blight resistance. <i>P. infestans</i> clonal lineage-specific screening of selected species was conducted to identify the presence of RB resistance. We found late blight resistant accessions in <i>S. verrucosum</i>, <i>S. stoloniferum</i> and <i>S. morelliforme</i> that were susceptible to the <i>RB</i> overcoming isolate NL13316, indicating the presence of <i>RB</i>-like resistance in these species.</AbstractText></Abstract><AuthorList CompleteYN="Y"><Author ValidYN="Y"><LastName>Karki</LastName><ForeName>Hari</ForeName><Initials>H</Initials><AffiliationInfo><Affiliation>USDA/ARS, Vegetable Crops Research Unit, Madison, Wisconsin, United States; hari.kari@usda.gov.</Affiliation></AffiliationInfo></Author><Author ValidYN="Y"><LastName>Jansky</LastName><ForeName>Shelley</ForeName><Initials>S</Initials><AffiliationInfo><Affiliation>USDA/ARS, Vegetable Crops Research Unit, Madison, Wisconsin, United States.</Affiliation></AffiliationInfo><AffiliationInfo><Affiliation>University of Wisconsin-Madison, 5228, Horticulture, Madison, Wisconsin, United States; shelley.jansky@usda.gov.</Affiliation></AffiliationInfo></Author><Author ValidYN="Y"><LastName>Halterman</LastName><ForeName>Dennis</ForeName><Initials>D</Initials><AffiliationInfo><Affiliation>USDA/ARS, Vegetable Crops Research Unit, Madison, Wisconsin, United States; Dennis.Halterman@ARS.USDA.GOV.</Affiliation></AffiliationInfo></Author></AuthorList><Language>eng</Language><PublicationTypeList><PublicationType UI="D016428">Journal Article</PublicationType></PublicationTypeList><ArticleDate DateType="Electronic"><Year>2020</Year><Month>08</Month><Day>05</Day></ArticleDate></Article><MedlineJournalInfo><Country>United States</Country><MedlineTA>Plant Dis</MedlineTA><NlmUniqueID>9882809</NlmUniqueID><ISSNLinking>0191-2917</ISSNLinking></MedlineJournalInfo><CitationSubset>IM</CitationSubset><KeywordList Owner="NOTNLM"><Keyword MajorTopicYN="N">Causal Agent</Keyword><Keyword MajorTopicYN="N">Crop Type</Keyword><Keyword MajorTopicYN="N">Disease management</Keyword><Keyword MajorTopicYN="N">Oomycetes</Keyword><Keyword MajorTopicYN="N">Subject Areas</Keyword><Keyword MajorTopicYN="N">Vegetables</Keyword><Keyword MajorTopicYN="N">cultivar/resistance</Keyword><Keyword MajorTopicYN="N">potato wild species</Keyword></KeywordList></MedlineCitation><PubmedData><History><PubMedPubDate PubStatus="entrez"><Year>2020</Year><Month>8</Month><Day>7</Day><Hour>6</Hour><Minute>0</Minute></PubMedPubDate><PubMedPubDate PubStatus="pubmed"><Year>2020</Year><Month>8</Month><Day>7</Day><Hour>6</Hour><Minute>0</Minute></PubMedPubDate><PubMedPubDate PubStatus="medline"><Year>2020</Year><Month>8</Month><Day>7</Day><Hour>6</Hour><Minute>0</Minute></PubMedPubDate></History><PublicationStatus>aheadofprint</PublicationStatus><ArticleIdList><ArticleId IdType="pubmed">32755364</ArticleId><ArticleId IdType="doi">10.1094/PDIS-06-20-1367-RE</ArticleId></ArticleIdList></PubmedData></pubmed><affiliations><list><country><li>États-Unis</li></country><region><li>Wisconsin</li></region></list><tree><noCountry><name sortKey="Halterman, Dennis" sort="Halterman, Dennis" uniqKey="Halterman D" first="Dennis" last="Halterman">Dennis Halterman</name><name sortKey="Karki, Hari" sort="Karki, Hari" uniqKey="Karki H" first="Hari" last="Karki">Hari Karki</name></noCountry><country name="États-Unis"><region name="Wisconsin"><name sortKey="Jansky, Shelley" sort="Jansky, Shelley" uniqKey="Jansky S" first="Shelley" last="Jansky">Shelley Jansky</name></region></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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