Morphological and molecular characterization of Phytophthora glovera sp. nov. from tobacco in Brazil.
Identifieur interne : 001613 ( Main/Exploration ); précédent : 001612; suivant : 001614Morphological and molecular characterization of Phytophthora glovera sp. nov. from tobacco in Brazil.
Auteurs : Z Gloria Abad [États-Unis] ; Kelly L. Ivors ; Courtney A. Gallup ; Jorge A. Abad ; H David ShewSource :
- Mycologia [ 0027-5514 ]
Descripteurs français
- KwdFr :
- Brésil (MeSH), Données de séquences moléculaires (MeSH), Maladies des plantes (microbiologie), Phylogenèse (MeSH), Phytophthora (classification), Phytophthora (croissance et développement), Phytophthora (génétique), Phytophthora (isolement et purification), Protéines fongiques (génétique), Tabac (microbiologie), Tubuline (génétique).
- MESH :
- croissance et développement : Phytophthora.
- génétique : Phytophthora, Protéines fongiques, Tubuline.
- isolement et purification : Phytophthora.
- microbiologie : Maladies des plantes, Tabac.
- Brésil, Données de séquences moléculaires, Phylogenèse.
- Wicri :
- geographic : Brésil.
English descriptors
- KwdEn :
- Brazil (MeSH), Fungal Proteins (genetics), Molecular Sequence Data (MeSH), Phylogeny (MeSH), Phytophthora (classification), Phytophthora (genetics), Phytophthora (growth & development), Phytophthora (isolation & purification), Plant Diseases (microbiology), Tobacco (microbiology), Tubulin (genetics).
- MESH :
- chemical , genetics : Fungal Proteins, Tubulin.
- geographic : Brazil.
- classification : Phytophthora.
- genetics : Phytophthora.
- growth & development : Phytophthora.
- isolation & purification : Phytophthora.
- microbiology : Plant Diseases, Tobacco.
- Molecular Sequence Data, Phylogeny.
Abstract
A root rot disease of cultivated tobacco called yellow stunt has been observed in the burley tobacco production areas of Brazil since the early 1990s. Root infecting fungi and straminipiles were isolated from the roots of diseased tobacco plants, including a semi-papillate, homothallic, slow growing Phytophthora species. Pathogenicity trials confirmed that Phytophthora sp. caused root rot and stunting of burley and flue-cured tobaccos. Morphological characteristics of the asexual and sexual stages of this organism did not match any reported Phytophthora species and were very different from the widely known tobacco black shank pathogen P. nicotianae. Phylogenetic analysis based on sequences of the internal transcribed spacer rDNA, β-tubulin and translation elongation factor 1-α regions indicated that this organism represents a previously unreported Phytophthora species that is significantly supported in clade 2 and most closely related to P. capsici. However P. glovera differs from P. capsici in a number of morphological characters, most significantly P. glovera is homothallic and produces both paragynous and amphigynous antheridia while P. capsici is heterothallic and produces only amphigynous antheridia. In this paper we confirmed pathogenicity of this species on tobacco and describe the morphological and molecular characteristics of Phytophthora glovera sp. nov.
DOI: 10.3852/09-157
PubMed: 21193600
Affiliations:
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Root infecting fungi and straminipiles were isolated from the roots of diseased tobacco plants, including a semi-papillate, homothallic, slow growing Phytophthora species. Pathogenicity trials confirmed that Phytophthora sp. caused root rot and stunting of burley and flue-cured tobaccos. Morphological characteristics of the asexual and sexual stages of this organism did not match any reported Phytophthora species and were very different from the widely known tobacco black shank pathogen P. nicotianae. Phylogenetic analysis based on sequences of the internal transcribed spacer rDNA, β-tubulin and translation elongation factor 1-α regions indicated that this organism represents a previously unreported Phytophthora species that is significantly supported in clade 2 and most closely related to P. capsici. However P. glovera differs from P. capsici in a number of morphological characters, most significantly P. glovera is homothallic and produces both paragynous and amphigynous antheridia while P. capsici is heterothallic and produces only amphigynous antheridia. In this paper we confirmed pathogenicity of this species on tobacco and describe the morphological and molecular characteristics of Phytophthora glovera sp. nov.</div></front></TEI><pubmed><MedlineCitation Status="MEDLINE" Owner="NLM"><PMID Version="1">21193600</PMID><DateCompleted><Year>2011</Year><Month>05</Month><Day>17</Day></DateCompleted><DateRevised><Year>2011</Year><Month>03</Month><Day>18</Day></DateRevised><Article PubModel="Print-Electronic"><Journal><ISSN IssnType="Print">0027-5514</ISSN><JournalIssue CitedMedium="Print"><Volume>103</Volume><Issue>2</Issue><PubDate><MedlineDate>2011 Mar-Apr</MedlineDate></PubDate></JournalIssue><Title>Mycologia</Title><ISOAbbreviation>Mycologia</ISOAbbreviation></Journal><ArticleTitle>Morphological and molecular characterization of Phytophthora glovera sp. nov. from tobacco in Brazil.</ArticleTitle><Pagination><MedlinePgn>341-50</MedlinePgn></Pagination><ELocationID EIdType="doi" ValidYN="Y">10.3852/09-157</ELocationID><Abstract><AbstractText>A root rot disease of cultivated tobacco called yellow stunt has been observed in the burley tobacco production areas of Brazil since the early 1990s. Root infecting fungi and straminipiles were isolated from the roots of diseased tobacco plants, including a semi-papillate, homothallic, slow growing Phytophthora species. Pathogenicity trials confirmed that Phytophthora sp. caused root rot and stunting of burley and flue-cured tobaccos. Morphological characteristics of the asexual and sexual stages of this organism did not match any reported Phytophthora species and were very different from the widely known tobacco black shank pathogen P. nicotianae. Phylogenetic analysis based on sequences of the internal transcribed spacer rDNA, β-tubulin and translation elongation factor 1-α regions indicated that this organism represents a previously unreported Phytophthora species that is significantly supported in clade 2 and most closely related to P. capsici. However P. glovera differs from P. capsici in a number of morphological characters, most significantly P. glovera is homothallic and produces both paragynous and amphigynous antheridia while P. capsici is heterothallic and produces only amphigynous antheridia. 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Abad</name><name sortKey="Gallup, Courtney A" sort="Gallup, Courtney A" uniqKey="Gallup C" first="Courtney A" last="Gallup">Courtney A. Gallup</name><name sortKey="Ivors, Kelly L" sort="Ivors, Kelly L" uniqKey="Ivors K" first="Kelly L" last="Ivors">Kelly L. Ivors</name><name sortKey="Shew, H David" sort="Shew, H David" uniqKey="Shew H" first="H David" last="Shew">H David Shew</name></noCountry><country name="États-Unis"><noRegion><name sortKey="Abad, Z Gloria" sort="Abad, Z Gloria" uniqKey="Abad Z" first="Z Gloria" last="Abad">Z Gloria Abad</name></noRegion></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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