Characterization of Oomycete Species Associated With Root and Crown Rot of English Walnut in Chile.
Identifieur interne : 000566 ( Main/Exploration ); précédent : 000565; suivant : 000567Characterization of Oomycete Species Associated With Root and Crown Rot of English Walnut in Chile.
Auteurs : Jeannette Guajardo ; Sebastián Saa ; Natalia Riquelme ; Gregory Browne [États-Unis] ; Cristian Youlton ; M Nica Castro ; Ximena BesoainSource :
- Plant disease [ 0191-2917 ] ; 2019.
Descripteurs français
- KwdFr :
- MESH :
- microbiologie : Juglans, Maladies des plantes, Racines de plante.
- physiologie : Oomycetes, Phytophthora.
- Chili.
- Wicri :
- geographic : Chili.
English descriptors
- KwdEn :
- MESH :
- geographic : Chile.
- microbiology : Juglans, Plant Diseases, Plant Roots.
- physiology : Oomycetes, Phytophthora.
Abstract
English (Persian) walnut (Juglans regia) trees affected by root and crown rot were surveyed in five regions of central Chile between 2015 and 2017. In each region, nine orchards, ranging from 1 to 21 years old, were randomly selected and inspected for incidence and severity of tree decline associated with crown and root rot. Soil and symptomatic crown and root tissues were collected and cultured in P5ARP semiselective medium to isolate potential oomycete pathogens, which were identified through morphology and molecularly using ITS sequences in the rDNA gene and beta tubulin gene. The most frequently isolated species was Phytophthora cinnamomi. Pathogenicity tests were conducted with representative oomycete isolates. P. cinnamomi, P. citrophthora, and Pythium ultimum were all pathogenic in J. regia. Nevertheless, only P. cinnamomi and P. citrophthora were pathogenic to English walnut. Py. ultimum caused limited levels of root damage to English walnut seedlings. Our research indicates that as the Chilean walnut industry has expanded, so have walnut crown and root rots induced by oomycetes.
DOI: 10.1094/PDIS-07-18-1160-RE
PubMed: 30789315
Affiliations:
Links toward previous steps (curation, corpus...)
Le document en format XML
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and.</nlm:affiliation><wicri:noCountry code="subField">Chile; and</wicri:noCountry></affiliation></author><author><name sortKey="Saa, Sebastian" sort="Saa, Sebastian" uniqKey="Saa S" first="Sebastián" last="Saa">Sebastián Saa</name><affiliation><nlm:affiliation>1 Escuela de Agronomía, Facultad de Ciencias Agronómicas y de los Alimentos, Pontificia Universidad Católica de Valparaíso, Casilla 4D, Quillota, Chile; and.</nlm:affiliation><wicri:noCountry code="subField">Chile; and</wicri:noCountry></affiliation></author><author><name sortKey="Riquelme, Natalia" sort="Riquelme, Natalia" uniqKey="Riquelme N" first="Natalia" last="Riquelme">Natalia Riquelme</name><affiliation><nlm:affiliation>1 Escuela de Agronomía, Facultad de Ciencias Agronómicas y de los Alimentos, Pontificia Universidad Católica de Valparaíso, Casilla 4D, Quillota, Chile; and.</nlm:affiliation><wicri:noCountry code="subField">Chile; and</wicri:noCountry></affiliation></author><author><name sortKey="Browne, Gregory" sort="Browne, Gregory" uniqKey="Browne G" first="Gregory" last="Browne">Gregory Browne</name><affiliation wicri:level="2"><nlm:affiliation>2 USDA-ARS, Crops Pathology and Genetics Research Unit, Department of Plant Pathology, University of California, Davis, CA 95616, U.S.A.</nlm:affiliation><country xml:lang="fr">États-Unis</country><wicri:regionArea>2 USDA-ARS, Crops Pathology and Genetics Research Unit, Department of Plant Pathology, University of California, Davis, CA 95616</wicri:regionArea><placeName><region type="state">Californie</region></placeName></affiliation></author><author><name sortKey="Youlton, Cristian" sort="Youlton, Cristian" uniqKey="Youlton C" first="Cristian" last="Youlton">Cristian Youlton</name><affiliation><nlm:affiliation>1 Escuela de Agronomía, Facultad de Ciencias Agronómicas y de los Alimentos, Pontificia Universidad Católica de Valparaíso, Casilla 4D, Quillota, Chile; and.</nlm:affiliation><wicri:noCountry code="subField">Chile; and</wicri:noCountry></affiliation></author><author><name sortKey="Castro, M Nica" sort="Castro, M Nica" uniqKey="Castro M" first="M Nica" last="Castro">M Nica Castro</name><affiliation><nlm:affiliation>1 Escuela de Agronomía, Facultad de Ciencias Agronómicas y de los Alimentos, Pontificia Universidad Católica de Valparaíso, Casilla 4D, Quillota, Chile; and.</nlm:affiliation><wicri:noCountry code="subField">Chile; and</wicri:noCountry></affiliation></author><author><name sortKey="Besoain, Ximena" sort="Besoain, Ximena" uniqKey="Besoain X" first="Ximena" last="Besoain">Ximena Besoain</name><affiliation><nlm:affiliation>1 Escuela de Agronomía, Facultad de Ciencias Agronómicas y de los Alimentos, Pontificia Universidad Católica de Valparaíso, Casilla 4D, Quillota, Chile; and.</nlm:affiliation><wicri:noCountry code="subField">Chile; and</wicri:noCountry></affiliation></author></analytic><series><title level="j">Plant disease</title><idno type="ISSN">0191-2917</idno><imprint><date when="2019" type="published">2019</date></imprint></series></biblStruct></sourceDesc></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Chile (MeSH)</term><term>Juglans (microbiology)</term><term>Oomycetes (physiology)</term><term>Phytophthora (physiology)</term><term>Plant Diseases (microbiology)</term><term>Plant Roots (microbiology)</term></keywords><keywords scheme="KwdFr" xml:lang="fr"><term>Chili (MeSH)</term><term>Juglans (microbiologie)</term><term>Maladies des plantes (microbiologie)</term><term>Oomycetes (physiologie)</term><term>Phytophthora (physiologie)</term><term>Racines de plante (microbiologie)</term></keywords><keywords scheme="MESH" type="geographic" xml:lang="en"><term>Chile</term></keywords><keywords scheme="MESH" qualifier="microbiologie" xml:lang="fr"><term>Juglans</term><term>Maladies des plantes</term><term>Racines de plante</term></keywords><keywords scheme="MESH" qualifier="microbiology" xml:lang="en"><term>Juglans</term><term>Plant Diseases</term><term>Plant Roots</term></keywords><keywords scheme="MESH" qualifier="physiologie" xml:lang="fr"><term>Oomycetes</term><term>Phytophthora</term></keywords><keywords scheme="MESH" qualifier="physiology" xml:lang="en"><term>Oomycetes</term><term>Phytophthora</term></keywords><keywords scheme="MESH" xml:lang="fr"><term>Chili</term></keywords><keywords scheme="Wicri" type="geographic" xml:lang="fr"><term>Chili</term></keywords></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">English (Persian) walnut (Juglans regia) trees affected by root and crown rot were surveyed in five regions of central Chile between 2015 and 2017. In each region, nine orchards, ranging from 1 to 21 years old, were randomly selected and inspected for incidence and severity of tree decline associated with crown and root rot. Soil and symptomatic crown and root tissues were collected and cultured in P<sub>5</sub>ARP semiselective medium to isolate potential oomycete pathogens, which were identified through morphology and molecularly using ITS sequences in the rDNA gene and beta tubulin gene. The most frequently isolated species was Phytophthora cinnamomi. Pathogenicity tests were conducted with representative oomycete isolates. P. cinnamomi, P. citrophthora, and Pythium ultimum were all pathogenic in J. regia. Nevertheless, only P. cinnamomi and P. citrophthora were pathogenic to English walnut. Py. ultimum caused limited levels of root damage to English walnut seedlings. Our research indicates that as the Chilean walnut industry has expanded, so have walnut crown and root rots induced by oomycetes.</div></front></TEI><pubmed><MedlineCitation Status="MEDLINE" IndexingMethod="Curated" Owner="NLM"><PMID Version="1">30789315</PMID><DateCompleted><Year>2019</Year><Month>07</Month><Day>19</Day></DateCompleted><DateRevised><Year>2019</Year><Month>07</Month><Day>19</Day></DateRevised><Article PubModel="Print-Electronic"><Journal><ISSN IssnType="Print">0191-2917</ISSN><JournalIssue CitedMedium="Print"><Volume>103</Volume><Issue>4</Issue><PubDate><Year>2019</Year><Month>Apr</Month></PubDate></JournalIssue><Title>Plant disease</Title><ISOAbbreviation>Plant Dis</ISOAbbreviation></Journal><ArticleTitle>Characterization of Oomycete Species Associated With Root and Crown Rot of English Walnut in Chile.</ArticleTitle><Pagination><MedlinePgn>691-696</MedlinePgn></Pagination><ELocationID EIdType="doi" ValidYN="Y">10.1094/PDIS-07-18-1160-RE</ELocationID><Abstract><AbstractText>English (Persian) walnut (Juglans regia) trees affected by root and crown rot were surveyed in five regions of central Chile between 2015 and 2017. In each region, nine orchards, ranging from 1 to 21 years old, were randomly selected and inspected for incidence and severity of tree decline associated with crown and root rot. Soil and symptomatic crown and root tissues were collected and cultured in P<sub>5</sub>ARP semiselective medium to isolate potential oomycete pathogens, which were identified through morphology and molecularly using ITS sequences in the rDNA gene and beta tubulin gene. The most frequently isolated species was Phytophthora cinnamomi. Pathogenicity tests were conducted with representative oomycete isolates. P. cinnamomi, P. citrophthora, and Pythium ultimum were all pathogenic in J. regia. Nevertheless, only P. cinnamomi and P. citrophthora were pathogenic to English walnut. Py. ultimum caused limited levels of root damage to English walnut seedlings. Our research indicates that as the Chilean walnut industry has expanded, so have walnut crown and root rots induced by oomycetes.</AbstractText></Abstract><AuthorList CompleteYN="Y"><Author ValidYN="Y"><LastName>Guajardo</LastName><ForeName>Jeannette</ForeName><Initials>J</Initials><AffiliationInfo><Affiliation>1 Escuela de Agronomía, Facultad de Ciencias Agronómicas y de los Alimentos, Pontificia Universidad Católica de Valparaíso, Casilla 4D, Quillota, Chile; and.</Affiliation></AffiliationInfo></Author><Author ValidYN="Y"><LastName>Saa</LastName><ForeName>Sebastián</ForeName><Initials>S</Initials><AffiliationInfo><Affiliation>1 Escuela de Agronomía, Facultad de Ciencias Agronómicas y de los Alimentos, Pontificia Universidad Católica de Valparaíso, Casilla 4D, Quillota, Chile; and.</Affiliation></AffiliationInfo></Author><Author ValidYN="Y"><LastName>Riquelme</LastName><ForeName>Natalia</ForeName><Initials>N</Initials><AffiliationInfo><Affiliation>1 Escuela de Agronomía, Facultad de Ciencias Agronómicas y de los Alimentos, Pontificia Universidad Católica de Valparaíso, Casilla 4D, Quillota, Chile; and.</Affiliation></AffiliationInfo></Author><Author ValidYN="Y"><LastName>Browne</LastName><ForeName>Gregory</ForeName><Initials>G</Initials><AffiliationInfo><Affiliation>2 USDA-ARS, Crops Pathology and Genetics Research Unit, Department of Plant Pathology, University of California, Davis, CA 95616, U.S.A.</Affiliation></AffiliationInfo></Author><Author ValidYN="Y"><LastName>Youlton</LastName><ForeName>Cristian</ForeName><Initials>C</Initials><AffiliationInfo><Affiliation>1 Escuela de Agronomía, Facultad de Ciencias Agronómicas y de los Alimentos, Pontificia Universidad Católica de Valparaíso, Casilla 4D, Quillota, Chile; and.</Affiliation></AffiliationInfo></Author><Author ValidYN="Y"><LastName>Castro</LastName><ForeName>Mónica</ForeName><Initials>M</Initials><AffiliationInfo><Affiliation>1 Escuela de Agronomía, Facultad de Ciencias Agronómicas y de los Alimentos, Pontificia Universidad Católica de Valparaíso, Casilla 4D, Quillota, Chile; and.</Affiliation></AffiliationInfo></Author><Author ValidYN="Y"><LastName>Besoain</LastName><ForeName>Ximena</ForeName><Initials>X</Initials><Identifier Source="ORCID">http://orcid.org/0000-0002-4861-7961</Identifier><AffiliationInfo><Affiliation>1 Escuela de Agronomía, Facultad de Ciencias Agronómicas y de los Alimentos, Pontificia Universidad Católica de Valparaíso, Casilla 4D, Quillota, Chile; and.</Affiliation></AffiliationInfo></Author></AuthorList><Language>eng</Language><PublicationTypeList><PublicationType UI="D016428">Journal Article</PublicationType></PublicationTypeList><ArticleDate DateType="Electronic"><Year>2019</Year><Month>02</Month><Day>18</Day></ArticleDate></Article><MedlineJournalInfo><Country>United States</Country><MedlineTA>Plant Dis</MedlineTA><NlmUniqueID>9882809</NlmUniqueID><ISSNLinking>0191-2917</ISSNLinking></MedlineJournalInfo><CitationSubset>IM</CitationSubset><MeshHeadingList><MeshHeading><DescriptorName UI="D002677" MajorTopicYN="N" Type="Geographic">Chile</DescriptorName></MeshHeading><MeshHeading><DescriptorName UI="D031324" MajorTopicYN="Y">Juglans</DescriptorName><QualifierName UI="Q000382" MajorTopicYN="N">microbiology</QualifierName></MeshHeading><MeshHeading><DescriptorName UI="D009868" MajorTopicYN="Y">Oomycetes</DescriptorName><QualifierName UI="Q000502" MajorTopicYN="N">physiology</QualifierName></MeshHeading><MeshHeading><DescriptorName UI="D010838" MajorTopicYN="N">Phytophthora</DescriptorName><QualifierName UI="Q000502" MajorTopicYN="N">physiology</QualifierName></MeshHeading><MeshHeading><DescriptorName UI="D010935" MajorTopicYN="Y">Plant Diseases</DescriptorName><QualifierName UI="Q000382" MajorTopicYN="N">microbiology</QualifierName></MeshHeading><MeshHeading><DescriptorName UI="D018517" MajorTopicYN="Y">Plant Roots</DescriptorName><QualifierName UI="Q000382" MajorTopicYN="N">microbiology</QualifierName></MeshHeading></MeshHeadingList></MedlineCitation><PubmedData><History><PubMedPubDate PubStatus="pubmed"><Year>2019</Year><Month>2</Month><Day>23</Day><Hour>6</Hour><Minute>0</Minute></PubMedPubDate><PubMedPubDate PubStatus="medline"><Year>2019</Year><Month>7</Month><Day>20</Day><Hour>6</Hour><Minute>0</Minute></PubMedPubDate><PubMedPubDate PubStatus="entrez"><Year>2019</Year><Month>2</Month><Day>22</Day><Hour>6</Hour><Minute>0</Minute></PubMedPubDate></History><PublicationStatus>ppublish</PublicationStatus><ArticleIdList><ArticleId IdType="pubmed">30789315</ArticleId><ArticleId IdType="doi">10.1094/PDIS-07-18-1160-RE</ArticleId></ArticleIdList></PubmedData></pubmed><affiliations><list><country><li>États-Unis</li></country><region><li>Californie</li></region></list><tree><noCountry><name sortKey="Besoain, Ximena" sort="Besoain, Ximena" uniqKey="Besoain X" first="Ximena" last="Besoain">Ximena Besoain</name><name sortKey="Castro, M Nica" sort="Castro, M Nica" uniqKey="Castro M" first="M Nica" last="Castro">M Nica Castro</name><name sortKey="Guajardo, Jeannette" sort="Guajardo, Jeannette" uniqKey="Guajardo J" first="Jeannette" last="Guajardo">Jeannette Guajardo</name><name sortKey="Riquelme, Natalia" sort="Riquelme, Natalia" uniqKey="Riquelme N" first="Natalia" last="Riquelme">Natalia Riquelme</name><name sortKey="Saa, Sebastian" sort="Saa, Sebastian" uniqKey="Saa S" first="Sebastián" last="Saa">Sebastián Saa</name><name sortKey="Youlton, Cristian" sort="Youlton, Cristian" uniqKey="Youlton C" first="Cristian" last="Youlton">Cristian Youlton</name></noCountry><country name="États-Unis"><region name="Californie"><name sortKey="Browne, Gregory" sort="Browne, Gregory" uniqKey="Browne G" first="Gregory" last="Browne">Gregory Browne</name></region></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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