OrangerV1, Main, Exploration, bibRecord, 001568

Weedy Hosts and Prevalence of Potential Leafhopper Vectors (Hemiptera: Cicadellidae) of a Phytoplasma (16SrIX group) Associated With Huanglongbing Symptoms in Citrus Groves

Identifieur interne : 001568 ( Main/Exploration ); précédent : 001567; suivant : 001569

Weedy Hosts and Prevalence of Potential Leafhopper Vectors (Hemiptera: Cicadellidae) of a Phytoplasma (16SrIX group) Associated With Huanglongbing Symptoms in Citrus Groves

Auteurs : R. N. Marques [Brésil] ; D. C. Teixeira [Brésil] ; P. T. Yamamoto [Brésil] ; J. R. S. Lopes [Brésil]

Source :

Journal of economic entomology [ 0022-0493 ] ; 2012.

RBID : Pascal:12-0181622

Descripteurs français

Pascal (Inist)
- Hôte, Prévalence, Vecteur, Phytoplasme, Bocage, Mauvaise herbe, Maladie, Phloème, Sève, Cicadellidae, Citrus.
Wicri :
- geographic : Brésil.
- topic : Maladie.

English descriptors

KwdEn :
- Animals, Brazil, Cicadellidae, Citrus, Citrus (microbiology), DNA, Bacterial (analysis), Disease, Grove, Hemiptera (classification), Hemiptera (microbiology), Host, Insect Vectors (classification), Insect Vectors (microbiology), Phloem, Phytoplasma, Phytoplasma (classification), Phytoplasma (genetics), Phytoplasma (isolation & purification), Phytoplasma (physiology), Plant Diseases (microbiology), Plant Weeds (growth & development), Polymerase Chain Reaction, Population Density, Prevalence, Sap, Sequence Analysis, DNA, Species Specificity, Vector, Weed.
MESH :
- chemical , analysis : DNA, Bacterial.
- geographic : Brazil.
- classification : Hemiptera, Insect Vectors, Phytoplasma.
- genetics : Phytoplasma.
- growth & development : Plant Weeds.
- isolation & purification : Phytoplasma.
- microbiology : Citrus, Hemiptera, Insect Vectors, Plant Diseases.
- physiology : Phytoplasma.
- Animals, Polymerase Chain Reaction, Population Density, Sequence Analysis, DNA, Species Specificity.

Abstract

Huanglongbing (HLB) is a severe citrus (Citrus spp.) disease associated with the bacteria genus Candidatus Liberibacter, detected in Brazil in 2004. Another bacterium was found in association with HLB symptoms and characterized as a phytoplasma belonging to the 16SrIX group. The objectives of this study were to identify potential leafhopper vectors of the HLB-associated phytoplasma and their host plants. Leafhoppers were sampled every other week for 12 mo with sticky yellow cards placed at two heights (0.3 and 1.5 m) in the citrus tree canopy and by using a sweep net in the ground vegetation of two sweet orange, Citrus sinensis (L.) Osbeck, groves infected by the HLB-phytoplasma in Sao Paulo state. Faunistic analyses indicated one Agalliinae (Agallia albidula Uhler) and three Deltocephalinae [Balclutha hebe (Kirkaldy), Planicephalus flavicosta (Stål), and Scaphytopius (Convelinus) marginelineatus (Stål)] species, as the most abundant and frequent leafhoppers (Hemiptera: Cicadellidae). Visual observations indicated an association of leafhopper species with some weeds and the influence of weed species composition on leafhopper abundance in low-lying vegetation. S. marginelineatus and P. flavicosta were more frequent on Sida rhombifolia L. and Althernantera tenella Colla, respectively, whereas A. albidula was observed more often on Conyza bonariensis (L.) Cronq. and B. hebe only occurred on grasses. DNA samples of field-collected S. marginelineatus were positive by polymerase chain reaction and sequencing tests for the presence of the HLB-phytoplasma group, indicating it as a potential vector. The association of leafhoppers with their hosts may be used in deciding which management strategies to adopt against weeds and diseases in citrus orchards.

Affiliations:

Le document en format XML

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<series><title level="j" type="main">Journal of economic entomology</title>
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<term>Brazil</term>
<term>Cicadellidae</term>
<term>Citrus</term>
<term>Citrus (microbiology)</term>
<term>DNA, Bacterial (analysis)</term>
<term>Disease</term>
<term>Grove</term>
<term>Hemiptera (classification)</term>
<term>Hemiptera (microbiology)</term>
<term>Host</term>
<term>Insect Vectors (classification)</term>
<term>Insect Vectors (microbiology)</term>
<term>Phloem</term>
<term>Phytoplasma</term>
<term>Phytoplasma (classification)</term>
<term>Phytoplasma (genetics)</term>
<term>Phytoplasma (isolation & purification)</term>
<term>Phytoplasma (physiology)</term>
<term>Plant Diseases (microbiology)</term>
<term>Plant Weeds (growth & development)</term>
<term>Polymerase Chain Reaction</term>
<term>Population Density</term>
<term>Prevalence</term>
<term>Sap</term>
<term>Sequence Analysis, DNA</term>
<term>Species Specificity</term>
<term>Vector</term>
<term>Weed</term>
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<keywords scheme="MESH" qualifier="classification" xml:lang="en"><term>Hemiptera</term>
<term>Insect Vectors</term>
<term>Phytoplasma</term>
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<keywords scheme="MESH" qualifier="growth & development" xml:lang="en"><term>Plant Weeds</term>
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<keywords scheme="MESH" qualifier="isolation & purification" xml:lang="en"><term>Phytoplasma</term>
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<keywords scheme="MESH" qualifier="microbiology" xml:lang="en"><term>Citrus</term>
<term>Hemiptera</term>
<term>Insect Vectors</term>
<term>Plant Diseases</term>
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<term>Polymerase Chain Reaction</term>
<term>Population Density</term>
<term>Sequence Analysis, DNA</term>
<term>Species Specificity</term>
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<keywords scheme="Pascal" xml:lang="fr"><term>Hôte</term>
<term>Prévalence</term>
<term>Vecteur</term>
<term>Phytoplasme</term>
<term>Bocage</term>
<term>Mauvaise herbe</term>
<term>Maladie</term>
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<term>Sève</term>
<term>Cicadellidae</term>
<term>Citrus</term>
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<front><div type="abstract" xml:lang="en">Huanglongbing (HLB) is a severe citrus (Citrus spp.) disease associated with the bacteria genus Candidatus Liberibacter, detected in Brazil in 2004. Another bacterium was found in association with HLB symptoms and characterized as a phytoplasma belonging to the 16SrIX group. The objectives of this study were to identify potential leafhopper vectors of the HLB-associated phytoplasma and their host plants. Leafhoppers were sampled every other week for 12 mo with sticky yellow cards placed at two heights (0.3 and 1.5 m) in the citrus tree canopy and by using a sweep net in the ground vegetation of two sweet orange, Citrus sinensis (L.) Osbeck, groves infected by the HLB-phytoplasma in Sao Paulo state. Faunistic analyses indicated one Agalliinae (Agallia albidula Uhler) and three Deltocephalinae [Balclutha hebe (Kirkaldy), Planicephalus flavicosta (Stål), and Scaphytopius (Convelinus) marginelineatus (Stål)] species, as the most abundant and frequent leafhoppers (Hemiptera: Cicadellidae). Visual observations indicated an association of leafhopper species with some weeds and the influence of weed species composition on leafhopper abundance in low-lying vegetation. S. marginelineatus and P. flavicosta were more frequent on Sida rhombifolia L. and Althernantera tenella Colla, respectively, whereas A. albidula was observed more often on Conyza bonariensis (L.) Cronq. and B. hebe only occurred on grasses. DNA samples of field-collected S. marginelineatus were positive by polymerase chain reaction and sequencing tests for the presence of the HLB-phytoplasma group, indicating it as a potential vector. The association of leafhoppers with their hosts may be used in deciding which management strategies to adopt against weeds and diseases in citrus orchards.</div>
</front>
</TEI>
<affiliations><list><country><li>Brésil</li>
</country>
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<settlement><li>São Paulo</li>
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<tree><country name="Brésil"><region name="État de São Paulo"><name sortKey="Marques, R N" sort="Marques, R N" uniqKey="Marques R" first="R. N." last="Marques">R. N. Marques</name>
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<name sortKey="Lopes, J R S" sort="Lopes, J R S" uniqKey="Lopes J" first="J. R. S." last="Lopes">J. R. S. Lopes</name>
<name sortKey="Teixeira, D C" sort="Teixeira, D C" uniqKey="Teixeira D" first="D. C." last="Teixeira">D. C. Teixeira</name>
<name sortKey="Yamamoto, P T" sort="Yamamoto, P T" uniqKey="Yamamoto P" first="P. T." last="Yamamoto">P. T. Yamamoto</name>
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</record>

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Weedy Hosts and Prevalence of Potential Leafhopper Vectors (Hemiptera: Cicadellidae) of a Phytoplasma (16SrIX group) Associated With Huanglongbing Symptoms in Citrus Groves

Weedy Hosts and Prevalence of Potential Leafhopper Vectors (Hemiptera: Cicadellidae) of a Phytoplasma (16SrIX group) Associated With Huanglongbing Symptoms in Citrus Groves

Source :

Descripteurs français

English descriptors

Abstract

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Le document en format XML

Pour manipuler ce document sous Unix (Dilib)

Pour mettre un lien sur cette page dans le réseau Wicri

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