OrangerV1, France, Analysis, bibRecord, 000146

A Phytoplasma Closely Related to the Pigeon Pea Witches'-Broom Phytoplasma (16Sr IX) Is Associated with Citrus Huanglongbing Symptoms in the State of Sao Paulo, Brazil

Identifieur interne : 000146 ( France/Analysis ); précédent : 000145; suivant : 000147

A Phytoplasma Closely Related to the Pigeon Pea Witches'-Broom Phytoplasma (16Sr IX) Is Associated with Citrus Huanglongbing Symptoms in the State of Sao Paulo, Brazil

Auteurs : D. C. Teixeira [Brésil] ; N. A. Wulff [Brésil] ; E. C. Martins [Brésil] ; E. W. Kitajima [Brésil] ; R. Bassanezi [Brésil] ; A. J. Ayres [Brésil] ; S. Eveillard [France] ; C. Saillard [France] ; J. M. Bove [France]

Source :

Phytopathology [ 0031-949X ] ; 2008.

RBID : Pascal:08-0429161

Descripteurs français

Pascal (Inist)
- Phytoplasme, Pisum sativum, Citrus sinensis, Insecta, Pigeon, Brésil, Réaction chaîne polymérase, Amplification, DNA ribosomique, Séquence nucléotide, Détection, Microscopie électronique, Vecteur, Microbiologie, Phytopathologie, Phytopathogène.
Wicri :
- geographic : Brésil.

English descriptors

KwdEn :
- Amplification, Brazil, Citrus sinensis, Detection, Electron microscopy, Insecta, Microbiology, Nucleotide sequence, Phytoplasma, Pigeon, Pisum sativum, Plant pathogen, Plant pathology, Polymerase chain reaction, Ribosomal DNA, Vector.

Abstract

In February 2007, sweet orange trees with characteristic symptoms of huanglongbing (HLB) were encountered in a region of Sao Paulo state (SPs) hitherto free of HLB. These trees tested negative for the three liberibacter species associated with HLB. A polymerase chain reaction (PCR) product from symptomatic fruit columella DNA amplifications with universal primers fD1/rP1 was cloned and sequenced. The corresponding agent was found to have highest 16S rDNA sequence identity (99%) with the pigeon pea witches'-broom phytoplasma of group 16Sr IX. Sequences of PCR products obtained with phytoplasma 16S rDNA primer pairs fU5/rU3, fU5/P7 confirm these results. With two primers D7f2/D7r2 designed based on the 16S rDNA sequence of the cloned DNA fragment, positive amplifications were obtained from more than one hundred samples including symptomatic fruits and blotchy mottle leaves. Samples positive for phytoplasmas were negative for liberibacters, except for four samples, which were positive for both the phytoplasma and 'Candidatus Liberibacter asiaticus'. The phytoplasma was detected by electron microscopy in the sieve tubes of midribs from symptomatic leaves. These results show that a phytoplasma of group IX is associated with citrus HLB symptoms in northern, central, and southern SPs. This phytoplasma has very probably been transmitted to citrus from an external source of inoculum, but the putative insect vector is not yet known.

Affiliations:

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Pascal:08-0429161

Le document en format XML

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<author><name sortKey="Teixeira, D C" sort="Teixeira, D C" uniqKey="Teixeira D" first="D. C." last="Teixeira">D. C. Teixeira</name>
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<author><name sortKey="Kitajima, E W" sort="Kitajima, E W" uniqKey="Kitajima E" first="E. W." last="Kitajima">E. W. Kitajima</name>
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<author><name sortKey="Bassanezi, R" sort="Bassanezi, R" uniqKey="Bassanezi R" first="R." last="Bassanezi">R. Bassanezi</name>
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<country>Brésil</country>
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<author><name sortKey="Eveillard, S" sort="Eveillard, S" uniqKey="Eveillard S" first="S." last="Eveillard">S. Eveillard</name>
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<country>France</country>
<placeName><region type="region" nuts="2">Nouvelle-Aquitaine</region>
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<settlement type="city">Villenave d'Ornon</settlement>
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<region type="old region" nuts="2">Aquitaine</region>
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<author><name sortKey="Bove, J M" sort="Bove, J M" uniqKey="Bove J" first="J. M." last="Bove">J. M. Bove</name>
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<s2>33883 Villenave d'Ornon</s2>
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<placeName><region type="region" nuts="2">Nouvelle-Aquitaine</region>
<region type="old region" nuts="2">Aquitaine</region>
<settlement type="city">Villenave d'Ornon</settlement>
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<sourceDesc><biblStruct><analytic><title xml:lang="en" level="a">A Phytoplasma Closely Related to the Pigeon Pea Witches'-Broom Phytoplasma (16Sr IX) Is Associated with Citrus Huanglongbing Symptoms in the State of Sao Paulo, Brazil</title>
<author><name sortKey="Teixeira, D C" sort="Teixeira, D C" uniqKey="Teixeira D" first="D. C." last="Teixeira">D. C. Teixeira</name>
<affiliation wicri:level="1"><inist:fA14 i1="01"><s1>Fundecitrus</s1>
<s2>Araraquara, SP, CEP 14807-040</s2>
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<author><name sortKey="Wulff, N A" sort="Wulff, N A" uniqKey="Wulff N" first="N. A." last="Wulff">N. A. Wulff</name>
<affiliation wicri:level="1"><inist:fA14 i1="01"><s1>Fundecitrus</s1>
<s2>Araraquara, SP, CEP 14807-040</s2>
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<wicri:noRegion>Fundecitrus</wicri:noRegion>
</affiliation>
</author>
<author><name sortKey="Martins, E C" sort="Martins, E C" uniqKey="Martins E" first="E. C." last="Martins">E. C. Martins</name>
<affiliation wicri:level="1"><inist:fA14 i1="01"><s1>Fundecitrus</s1>
<s2>Araraquara, SP, CEP 14807-040</s2>
<s3>BRA</s3>
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<sZ>2 aut.</sZ>
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<country>Brésil</country>
<wicri:noRegion>Fundecitrus</wicri:noRegion>
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<author><name sortKey="Kitajima, E W" sort="Kitajima, E W" uniqKey="Kitajima E" first="E. W." last="Kitajima">E. W. Kitajima</name>
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<country>Brésil</country>
<placeName><region type="state">État de São Paulo</region>
<settlement type="city">São Paulo</settlement>
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<orgName type="university">Université de São Paulo</orgName>
</affiliation>
</author>
<author><name sortKey="Bassanezi, R" sort="Bassanezi, R" uniqKey="Bassanezi R" first="R." last="Bassanezi">R. Bassanezi</name>
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<s2>Araraquara, SP, CEP 14807-040</s2>
<s3>BRA</s3>
<sZ>1 aut.</sZ>
<sZ>2 aut.</sZ>
<sZ>3 aut.</sZ>
<sZ>5 aut.</sZ>
<sZ>6 aut.</sZ>
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<country>Brésil</country>
<wicri:noRegion>Fundecitrus</wicri:noRegion>
</affiliation>
</author>
<author><name sortKey="Ayres, A J" sort="Ayres, A J" uniqKey="Ayres A" first="A. J." last="Ayres">A. J. Ayres</name>
<affiliation wicri:level="1"><inist:fA14 i1="01"><s1>Fundecitrus</s1>
<s2>Araraquara, SP, CEP 14807-040</s2>
<s3>BRA</s3>
<sZ>1 aut.</sZ>
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<sZ>3 aut.</sZ>
<sZ>5 aut.</sZ>
<sZ>6 aut.</sZ>
</inist:fA14>
<country>Brésil</country>
<wicri:noRegion>Fundecitrus</wicri:noRegion>
</affiliation>
</author>
<author><name sortKey="Eveillard, S" sort="Eveillard, S" uniqKey="Eveillard S" first="S." last="Eveillard">S. Eveillard</name>
<affiliation wicri:level="3"><inist:fA14 i1="03"><s1>Institut National de la Recherche Agronomique and Université de Bordeaux 2, UMR 1090, BP 81</s1>
<s2>33883 Villenave d'Ornon</s2>
<s3>FRA</s3>
<sZ>7 aut.</sZ>
<sZ>8 aut.</sZ>
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</inist:fA14>
<country>France</country>
<placeName><region type="region" nuts="2">Nouvelle-Aquitaine</region>
<region type="old region" nuts="2">Aquitaine</region>
<settlement type="city">Villenave d'Ornon</settlement>
</placeName>
</affiliation>
</author>
<author><name sortKey="Saillard, C" sort="Saillard, C" uniqKey="Saillard C" first="C." last="Saillard">C. Saillard</name>
<affiliation wicri:level="3"><inist:fA14 i1="03"><s1>Institut National de la Recherche Agronomique and Université de Bordeaux 2, UMR 1090, BP 81</s1>
<s2>33883 Villenave d'Ornon</s2>
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<sZ>7 aut.</sZ>
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</inist:fA14>
<country>France</country>
<placeName><region type="region" nuts="2">Nouvelle-Aquitaine</region>
<region type="old region" nuts="2">Aquitaine</region>
<settlement type="city">Villenave d'Ornon</settlement>
</placeName>
</affiliation>
</author>
<author><name sortKey="Bove, J M" sort="Bove, J M" uniqKey="Bove J" first="J. M." last="Bove">J. M. Bove</name>
<affiliation wicri:level="3"><inist:fA14 i1="03"><s1>Institut National de la Recherche Agronomique and Université de Bordeaux 2, UMR 1090, BP 81</s1>
<s2>33883 Villenave d'Ornon</s2>
<s3>FRA</s3>
<sZ>7 aut.</sZ>
<sZ>8 aut.</sZ>
<sZ>9 aut.</sZ>
</inist:fA14>
<country>France</country>
<placeName><region type="region" nuts="2">Nouvelle-Aquitaine</region>
<region type="old region" nuts="2">Aquitaine</region>
<settlement type="city">Villenave d'Ornon</settlement>
</placeName>
</affiliation>
</author>
</analytic>
<series><title level="j" type="main">Phytopathology</title>
<title level="j" type="abbreviated">Phytopathology</title>
<idno type="ISSN">0031-949X</idno>
<imprint><date when="2008">2008</date>
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</sourceDesc>
<seriesStmt><title level="j" type="main">Phytopathology</title>
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<idno type="ISSN">0031-949X</idno>
</seriesStmt>
</fileDesc>
<profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Amplification</term>
<term>Brazil</term>
<term>Citrus sinensis</term>
<term>Detection</term>
<term>Electron microscopy</term>
<term>Insecta</term>
<term>Microbiology</term>
<term>Nucleotide sequence</term>
<term>Phytoplasma</term>
<term>Pigeon</term>
<term>Pisum sativum</term>
<term>Plant pathogen</term>
<term>Plant pathology</term>
<term>Polymerase chain reaction</term>
<term>Ribosomal DNA</term>
<term>Vector</term>
</keywords>
<keywords scheme="Pascal" xml:lang="fr"><term>Phytoplasme</term>
<term>Pisum sativum</term>
<term>Citrus sinensis</term>
<term>Insecta</term>
<term>Pigeon</term>
<term>Brésil</term>
<term>Réaction chaîne polymérase</term>
<term>Amplification</term>
<term>DNA ribosomique</term>
<term>Séquence nucléotide</term>
<term>Détection</term>
<term>Microscopie électronique</term>
<term>Vecteur</term>
<term>Microbiologie</term>
<term>Phytopathologie</term>
<term>Phytopathogène</term>
</keywords>
<keywords scheme="Wicri" type="geographic" xml:lang="fr"><term>Brésil</term>
</keywords>
</textClass>
</profileDesc>
</teiHeader>
<front><div type="abstract" xml:lang="en">In February 2007, sweet orange trees with characteristic symptoms of huanglongbing (HLB) were encountered in a region of Sao Paulo state (SPs) hitherto free of HLB. These trees tested negative for the three liberibacter species associated with HLB. A polymerase chain reaction (PCR) product from symptomatic fruit columella DNA amplifications with universal primers fD1/rP1 was cloned and sequenced. The corresponding agent was found to have highest 16S rDNA sequence identity (99%) with the pigeon pea witches'-broom phytoplasma of group 16Sr IX. Sequences of PCR products obtained with phytoplasma 16S rDNA primer pairs fU5/rU3, fU5/P7 confirm these results. With two primers D7f2/D7r2 designed based on the 16S rDNA sequence of the cloned DNA fragment, positive amplifications were obtained from more than one hundred samples including symptomatic fruits and blotchy mottle leaves. Samples positive for phytoplasmas were negative for liberibacters, except for four samples, which were positive for both the phytoplasma and 'Candidatus Liberibacter asiaticus'. The phytoplasma was detected by electron microscopy in the sieve tubes of midribs from symptomatic leaves. These results show that a phytoplasma of group IX is associated with citrus HLB symptoms in northern, central, and southern SPs. This phytoplasma has very probably been transmitted to citrus from an external source of inoculum, but the putative insect vector is not yet known.</div>
</front>
</TEI>
<affiliations><list><country><li>Brésil</li>
<li>France</li>
</country>
<region><li>Aquitaine</li>
<li>Nouvelle-Aquitaine</li>
<li>État de São Paulo</li>
</region>
<settlement><li>São Paulo</li>
<li>Villenave d'Ornon</li>
</settlement>
<orgName><li>Université de São Paulo</li>
</orgName>
</list>
<tree><country name="Brésil"><noRegion><name sortKey="Teixeira, D C" sort="Teixeira, D C" uniqKey="Teixeira D" first="D. C." last="Teixeira">D. C. Teixeira</name>
</noRegion>
<name sortKey="Ayres, A J" sort="Ayres, A J" uniqKey="Ayres A" first="A. J." last="Ayres">A. J. Ayres</name>
<name sortKey="Bassanezi, R" sort="Bassanezi, R" uniqKey="Bassanezi R" first="R." last="Bassanezi">R. Bassanezi</name>
<name sortKey="Kitajima, E W" sort="Kitajima, E W" uniqKey="Kitajima E" first="E. W." last="Kitajima">E. W. Kitajima</name>
<name sortKey="Martins, E C" sort="Martins, E C" uniqKey="Martins E" first="E. C." last="Martins">E. C. Martins</name>
<name sortKey="Wulff, N A" sort="Wulff, N A" uniqKey="Wulff N" first="N. A." last="Wulff">N. A. Wulff</name>
</country>
<country name="France"><region name="Nouvelle-Aquitaine"><name sortKey="Eveillard, S" sort="Eveillard, S" uniqKey="Eveillard S" first="S." last="Eveillard">S. Eveillard</name>
</region>
<name sortKey="Bove, J M" sort="Bove, J M" uniqKey="Bove J" first="J. M." last="Bove">J. M. Bove</name>
<name sortKey="Saillard, C" sort="Saillard, C" uniqKey="Saillard C" first="C." last="Saillard">C. Saillard</name>
</country>
</tree>
</affiliations>
</record>

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A Phytoplasma Closely Related to the Pigeon Pea Witches'-Broom Phytoplasma (16Sr IX) Is Associated with Citrus Huanglongbing Symptoms in the State of Sao Paulo, Brazil

A Phytoplasma Closely Related to the Pigeon Pea Witches'-Broom Phytoplasma (16Sr IX) Is Associated with Citrus Huanglongbing Symptoms in the State of Sao Paulo, Brazil

Source :

Descripteurs français

English descriptors

Abstract

Links toward previous steps (curation, corpus...)

Links to Exploration step

Le document en format XML

Pour manipuler ce document sous Unix (Dilib)

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