Susceptibility of Fraser Fir to Phytophthora capsici.
Identifieur interne : 001A32 ( Main/Exploration ); précédent : 001A31; suivant : 001A33Susceptibility of Fraser Fir to Phytophthora capsici.
Auteurs : L M Quesada-Ocampo ; D W Fulbright ; M K Hausbeck [États-Unis]Source :
- Plant disease [ 0191-2917 ] ; 2009.
Abstract
Phytophthora cinnamomi, P. drechsleri, P. citricola, and P. cactorum limit Fraser fir production, whereas P. capsici affects Solanaceous, Cucurbitaceous, and Fabaceous crops. Some vegetable growers in Michigan plant conifers for the Christmas tree market in fields infested with P. capsici. To determine the susceptibility of Fraser fir to P. capsici, stems (no wound or 1- or 3-mm-diameter wound) or roots (2 or 4 g of infested millet seed or 2 or 5 × 103 zoospores/ml of a zoospore suspension) of seedlings were inoculated with each of four P. capsici isolates and incubated in growth chambers (20 or 25°C). In addition, Fraser fir seedlings were planted in two commercial fields naturally infested with P. capsici. All P. capsici isolates tested incited disease in the seedlings regardless of incubation temperature or inoculation method. Seedlings (72%) planted in P. capsici-infested fields developed disease symptoms and died. Most of the P. capsici isolates obtained from the Fraser fir seedlings infected while in the field were recovered from root tissue. Identification was confirmed by species-specific direct colony polymerase chain reaction. The pathogen was successfully recovered from stems of all stem-inoculated seedlings, and from roots and stems of all root-inoculated seedlings; the phenotype of the recovered isolate matched the phenotype of the inoculum. This study suggests that planting Fraser fir in fields infested with P. capsici could result in infection and that adjustments in current rotational schemes are needed.
DOI: 10.1094/PDIS-93-2-0135
PubMed: 30764108
Affiliations:
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Some vegetable growers in Michigan plant conifers for the Christmas tree market in fields infested with P. capsici. To determine the susceptibility of Fraser fir to P. capsici, stems (no wound or 1- or 3-mm-diameter wound) or roots (2 or 4 g of infested millet seed or 2 or 5 × 10<sup>3</sup> zoospores/ml of a zoospore suspension) of seedlings were inoculated with each of four P. capsici isolates and incubated in growth chambers (20 or 25°C). In addition, Fraser fir seedlings were planted in two commercial fields naturally infested with P. capsici. All P. capsici isolates tested incited disease in the seedlings regardless of incubation temperature or inoculation method. Seedlings (72%) planted in P. capsici-infested fields developed disease symptoms and died. Most of the P. capsici isolates obtained from the Fraser fir seedlings infected while in the field were recovered from root tissue. Identification was confirmed by species-specific direct colony polymerase chain reaction. The pathogen was successfully recovered from stems of all stem-inoculated seedlings, and from roots and stems of all root-inoculated seedlings; the phenotype of the recovered isolate matched the phenotype of the inoculum. This study suggests that planting Fraser fir in fields infested with P. capsici could result in infection and that adjustments in current rotational schemes are needed.</div></front></TEI><pubmed><MedlineCitation Status="PubMed-not-MEDLINE" Owner="NLM"><PMID Version="1">30764108</PMID><DateRevised><Year>2019</Year><Month>11</Month><Day>20</Day></DateRevised><Article PubModel="Print"><Journal><ISSN IssnType="Print">0191-2917</ISSN><JournalIssue CitedMedium="Print"><Volume>93</Volume><Issue>2</Issue><PubDate><Year>2009</Year><Month>Feb</Month></PubDate></JournalIssue><Title>Plant disease</Title><ISOAbbreviation>Plant Dis</ISOAbbreviation></Journal><ArticleTitle>Susceptibility of Fraser Fir to Phytophthora capsici.</ArticleTitle><Pagination><MedlinePgn>135-141</MedlinePgn></Pagination><ELocationID EIdType="doi" ValidYN="Y">10.1094/PDIS-93-2-0135</ELocationID><Abstract><AbstractText>Phytophthora cinnamomi, P. drechsleri, P. citricola, and P. cactorum limit Fraser fir production, whereas P. capsici affects Solanaceous, Cucurbitaceous, and Fabaceous crops. Some vegetable growers in Michigan plant conifers for the Christmas tree market in fields infested with P. capsici. To determine the susceptibility of Fraser fir to P. capsici, stems (no wound or 1- or 3-mm-diameter wound) or roots (2 or 4 g of infested millet seed or 2 or 5 × 10<sup>3</sup> zoospores/ml of a zoospore suspension) of seedlings were inoculated with each of four P. capsici isolates and incubated in growth chambers (20 or 25°C). In addition, Fraser fir seedlings were planted in two commercial fields naturally infested with P. capsici. All P. capsici isolates tested incited disease in the seedlings regardless of incubation temperature or inoculation method. Seedlings (72%) planted in P. capsici-infested fields developed disease symptoms and died. Most of the P. capsici isolates obtained from the Fraser fir seedlings infected while in the field were recovered from root tissue. Identification was confirmed by species-specific direct colony polymerase chain reaction. The pathogen was successfully recovered from stems of all stem-inoculated seedlings, and from roots and stems of all root-inoculated seedlings; the phenotype of the recovered isolate matched the phenotype of the inoculum. This study suggests that planting Fraser fir in fields infested with P. capsici could result in infection and that adjustments in current rotational schemes are needed.</AbstractText></Abstract><AuthorList CompleteYN="Y"><Author ValidYN="Y"><LastName>Quesada-Ocampo</LastName><ForeName>L M</ForeName><Initials>LM</Initials><AffiliationInfo><Affiliation>Graduate Research Assistant.</Affiliation></AffiliationInfo></Author><Author ValidYN="Y"><LastName>Fulbright</LastName><ForeName>D W</ForeName><Initials>DW</Initials><AffiliationInfo><Affiliation>Professor.</Affiliation></AffiliationInfo></Author><Author ValidYN="Y"><LastName>Hausbeck</LastName><ForeName>M K</ForeName><Initials>MK</Initials><AffiliationInfo><Affiliation>Professor, Department of Plant Pathology, Michigan State University, East Lansing 48824.</Affiliation></AffiliationInfo></Author></AuthorList><Language>eng</Language><PublicationTypeList><PublicationType UI="D016428">Journal Article</PublicationType></PublicationTypeList></Article><MedlineJournalInfo><Country>United States</Country><MedlineTA>Plant Dis</MedlineTA><NlmUniqueID>9882809</NlmUniqueID><ISSNLinking>0191-2917</ISSNLinking></MedlineJournalInfo><KeywordList Owner="NOTNLM"><Keyword MajorTopicYN="N">Christmas tree diseases</Keyword><Keyword MajorTopicYN="N">etiology</Keyword><Keyword MajorTopicYN="N">soilborne diseases</Keyword></KeywordList></MedlineCitation><PubmedData><History><PubMedPubDate PubStatus="entrez"><Year>2019</Year><Month>2</Month><Day>16</Day><Hour>6</Hour><Minute>0</Minute></PubMedPubDate><PubMedPubDate PubStatus="pubmed"><Year>2009</Year><Month>2</Month><Day>1</Day><Hour>0</Hour><Minute>0</Minute></PubMedPubDate><PubMedPubDate PubStatus="medline"><Year>2009</Year><Month>2</Month><Day>1</Day><Hour>0</Hour><Minute>1</Minute></PubMedPubDate></History><PublicationStatus>ppublish</PublicationStatus><ArticleIdList><ArticleId IdType="pubmed">30764108</ArticleId><ArticleId IdType="doi">10.1094/PDIS-93-2-0135</ArticleId></ArticleIdList></PubmedData></pubmed><affiliations><list><country><li>États-Unis</li></country><region><li>Michigan</li></region><settlement><li>East Lansing</li></settlement><orgName><li>Université d'État du Michigan</li></orgName></list><tree><noCountry><name sortKey="Fulbright, D W" sort="Fulbright, D W" uniqKey="Fulbright D" first="D W" last="Fulbright">D W Fulbright</name><name sortKey="Quesada Ocampo, L M" sort="Quesada Ocampo, L M" uniqKey="Quesada Ocampo L" first="L M" last="Quesada-Ocampo">L M Quesada-Ocampo</name></noCountry><country name="États-Unis"><region name="Michigan"><name sortKey="Hausbeck, M K" sort="Hausbeck, M K" uniqKey="Hausbeck M" first="M K" last="Hausbeck">M K Hausbeck</name></region></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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