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Influence of temperature on infection and establishment of 'Candidates Liberibacter americanus' and 'Candidatus Liberibacter asiaticus' in citrus plants

Identifieur interne : 001616 ( Main/Merge ); précédent : 001615; suivant : 001617

Influence of temperature on infection and establishment of 'Candidates Liberibacter americanus' and 'Candidatus Liberibacter asiaticus' in citrus plants

Auteurs : M. C. G. Gasparoto [Brésil] ; H. D. Coletta-Filho [Brésil] ; R. B. Bassanezi [Brésil] ; S. A. Lopes [Brésil] ; S. A. Lourenco [Brésil] ; L. Amorim [Brésil]

Source :

Plant pathology [ 0032-0862 ] ; 2012.

RBID : Pascal:12-0297411

Descripteurs français

Pascal (Inist)
- Effet température, Infection, Colonisation, Phytopathologie, Rutaceae, Citrus sinensis, <<>>, Liberibacter americanus, Liberibacter asiaticus.

English descriptors

KwdEn :
- Citrus sinensis, Colonization, Infection, Plant pathology, Rutaceae, Temperature effect.

Abstract

The objectives of this work were (i) to determine the influence of temperature on infection of citrus by 'Candidatus Liberibacter asiaticus' and 'Candidatus Liberibacter americanus', the two bacterial species associated with citrus huanglongbing (HLB) in Brazil, and (ii) to determine the influence of temperature on citrus colonization by 'Ca. L. asiaticus', which has taken over from 'Ca. L. americanus' as the predominant species in Brazil since 2008. Two experiments were carried out with graft-inoculated Valencia oranges on Rangpur lime rootstocks. Immediately after inoculation the plants were maintained for 423 days in growth chambers under the following night/day temperature conditions: 17/22, 22/27 or 27/32°C, with a dark/light photoperiod of 8/16 h. Infection and colonization of plants were determined using quantitative PCR (qPCR). 'Candidatus Liberibacter americanus' did not infect the plants maintained at 27/32°C; however, infection by 'Ca. L. asiaticus' occurred at all studied temperatures. Two months after inoculation, 'Ca. L. asiaticus' was distributed throughout the inoculated plants, with mean C, values in the range of 30-31 for leaves and 25-28 for roots. Over time, 'Ca. L. asiaticus' reached the highest titres in mature leaves (mean C_t value = 26.7) of citrus plants maintained at 22/27°C. 'Candidatus Liberibacter asiaticus' colonization of citrus plants was negatively affected by the daily temperature regime of 27/32°C (mean C_t value in mature leaves = 33.6).

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Pascal:12-0297411

Le document en format XML

<record><TEI><teiHeader><fileDesc><titleStmt><title xml:lang="en" level="a">Influence of temperature on infection and establishment of 'Candidates Liberibacter americanus' and 'Candidatus Liberibacter asiaticus' in citrus plants</title>
<author><name sortKey="Gasparoto, M C G" sort="Gasparoto, M C G" uniqKey="Gasparoto M" first="M. C. G." last="Gasparoto">M. C. G. Gasparoto</name>
<affiliation wicri:level="3"><inist:fA14 i1="01"><s1>Departamento de Fitopatologia e Nematologia, Universidade de São Paulo/ESALQ Av. Padua Dias 11, CP 9</s1>
<s2>CEP 13418-900 Piracicaba, São Paulo</s2>
<s3>BRA</s3>
<sZ>1 aut.</sZ>
<sZ>5 aut.</sZ>
<sZ>6 aut.</sZ>
</inist:fA14>
<country>Brésil</country>
<placeName><settlement type="city">São Paulo</settlement>
<region type="state">État de São Paulo</region>
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<author><name sortKey="Coletta Filho, H D" sort="Coletta Filho, H D" uniqKey="Coletta Filho H" first="H. D." last="Coletta-Filho">H. D. Coletta-Filho</name>
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<s2>CEP 13490-970 Cordeirópolis, São Paulo</s2>
<s3>BRA</s3>
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</inist:fA14>
<country>Brésil</country>
<placeName><settlement type="city">São Paulo</settlement>
<region type="state">État de São Paulo</region>
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<author><name sortKey="Bassanezi, R B" sort="Bassanezi, R B" uniqKey="Bassanezi R" first="R. B." last="Bassanezi">R. B. Bassanezi</name>
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<author><name sortKey="Lourenco, S A" sort="Lourenco, S A" uniqKey="Lourenco S" first="S. A." last="Lourenco">S. A. Lourenco</name>
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<author><name sortKey="Amorim, L" sort="Amorim, L" uniqKey="Amorim L" first="L." last="Amorim">L. Amorim</name>
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<s3>BRA</s3>
<sZ>1 aut.</sZ>
<sZ>5 aut.</sZ>
<sZ>6 aut.</sZ>
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<placeName><settlement type="city">São Paulo</settlement>
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<sourceDesc><biblStruct><analytic><title xml:lang="en" level="a">Influence of temperature on infection and establishment of 'Candidates Liberibacter americanus' and 'Candidatus Liberibacter asiaticus' in citrus plants</title>
<author><name sortKey="Gasparoto, M C G" sort="Gasparoto, M C G" uniqKey="Gasparoto M" first="M. C. G." last="Gasparoto">M. C. G. Gasparoto</name>
<affiliation wicri:level="3"><inist:fA14 i1="01"><s1>Departamento de Fitopatologia e Nematologia, Universidade de São Paulo/ESALQ Av. Padua Dias 11, CP 9</s1>
<s2>CEP 13418-900 Piracicaba, São Paulo</s2>
<s3>BRA</s3>
<sZ>1 aut.</sZ>
<sZ>5 aut.</sZ>
<sZ>6 aut.</sZ>
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<country>Brésil</country>
<placeName><settlement type="city">São Paulo</settlement>
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<author><name sortKey="Coletta Filho, H D" sort="Coletta Filho, H D" uniqKey="Coletta Filho H" first="H. D." last="Coletta-Filho">H. D. Coletta-Filho</name>
<affiliation wicri:level="3"><inist:fA14 i1="02"><s1>Centro APTA Citros Sylvio Moreira, IAC, Rod. Anhanguera km 158, CP 4</s1>
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<s3>BRA</s3>
<sZ>2 aut.</sZ>
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<country>Brésil</country>
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</author>
<author><name sortKey="Bassanezi, R B" sort="Bassanezi, R B" uniqKey="Bassanezi R" first="R. B." last="Bassanezi">R. B. Bassanezi</name>
<affiliation wicri:level="3"><inist:fA14 i1="03"><s1>Fundo de Defesa da Citricultura (FUNDECITRUS), Av. Dr. Adhemar Pereira de Barros 201, Vila Melhado</s1>
<s2>CEP 14807-040 Araraquara, São Paulo</s2>
<s3>BRA</s3>
<sZ>3 aut.</sZ>
<sZ>4 aut.</sZ>
</inist:fA14>
<country>Brésil</country>
<placeName><settlement type="city">São Paulo</settlement>
<region type="state">État de São Paulo</region>
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</affiliation>
</author>
<author><name sortKey="Lopes, S A" sort="Lopes, S A" uniqKey="Lopes S" first="S. A." last="Lopes">S. A. Lopes</name>
<affiliation wicri:level="3"><inist:fA14 i1="03"><s1>Fundo de Defesa da Citricultura (FUNDECITRUS), Av. Dr. Adhemar Pereira de Barros 201, Vila Melhado</s1>
<s2>CEP 14807-040 Araraquara, São Paulo</s2>
<s3>BRA</s3>
<sZ>3 aut.</sZ>
<sZ>4 aut.</sZ>
</inist:fA14>
<country>Brésil</country>
<placeName><settlement type="city">São Paulo</settlement>
<region type="state">État de São Paulo</region>
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<author><name sortKey="Lourenco, S A" sort="Lourenco, S A" uniqKey="Lourenco S" first="S. A." last="Lourenco">S. A. Lourenco</name>
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<s2>CEP 13418-900 Piracicaba, São Paulo</s2>
<s3>BRA</s3>
<sZ>1 aut.</sZ>
<sZ>5 aut.</sZ>
<sZ>6 aut.</sZ>
</inist:fA14>
<country>Brésil</country>
<placeName><settlement type="city">São Paulo</settlement>
<region type="state">État de São Paulo</region>
</placeName>
</affiliation>
</author>
<author><name sortKey="Amorim, L" sort="Amorim, L" uniqKey="Amorim L" first="L." last="Amorim">L. Amorim</name>
<affiliation wicri:level="3"><inist:fA14 i1="01"><s1>Departamento de Fitopatologia e Nematologia, Universidade de São Paulo/ESALQ Av. Padua Dias 11, CP 9</s1>
<s2>CEP 13418-900 Piracicaba, São Paulo</s2>
<s3>BRA</s3>
<sZ>1 aut.</sZ>
<sZ>5 aut.</sZ>
<sZ>6 aut.</sZ>
</inist:fA14>
<country>Brésil</country>
<placeName><settlement type="city">São Paulo</settlement>
<region type="state">État de São Paulo</region>
</placeName>
</affiliation>
</author>
</analytic>
<series><title level="j" type="main">Plant pathology</title>
<title level="j" type="abbreviated">Plant pathol.</title>
<idno type="ISSN">0032-0862</idno>
<imprint><date when="2012">2012</date>
</imprint>
</series>
</biblStruct>
</sourceDesc>
<seriesStmt><title level="j" type="main">Plant pathology</title>
<title level="j" type="abbreviated">Plant pathol.</title>
<idno type="ISSN">0032-0862</idno>
</seriesStmt>
</fileDesc>
<profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Citrus sinensis</term>
<term>Colonization</term>
<term>Infection</term>
<term>Plant pathology</term>
<term>Rutaceae</term>
<term>Temperature effect</term>
</keywords>
<keywords scheme="Pascal" xml:lang="fr"><term>Effet température</term>
<term>Infection</term>
<term>Colonisation</term>
<term>Phytopathologie</term>
<term>Rutaceae</term>
<term>Citrus sinensis</term>
<term><<>></term>
<term>Liberibacter americanus</term>
<term>Liberibacter asiaticus</term>
</keywords>
</textClass>
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<front><div type="abstract" xml:lang="en">The objectives of this work were (i) to determine the influence of temperature on infection of citrus by 'Candidatus Liberibacter asiaticus' and 'Candidatus Liberibacter americanus', the two bacterial species associated with citrus huanglongbing (HLB) in Brazil, and (ii) to determine the influence of temperature on citrus colonization by 'Ca. L. asiaticus', which has taken over from 'Ca. L. americanus' as the predominant species in Brazil since 2008. Two experiments were carried out with graft-inoculated Valencia oranges on Rangpur lime rootstocks. Immediately after inoculation the plants were maintained for 423 days in growth chambers under the following night/day temperature conditions: 17/22, 22/27 or 27/32°C, with a dark/light photoperiod of 8/16 h. Infection and colonization of plants were determined using quantitative PCR (qPCR). 'Candidatus Liberibacter americanus' did not infect the plants maintained at 27/32°C; however, infection by 'Ca. L. asiaticus' occurred at all studied temperatures. Two months after inoculation, 'Ca. L. asiaticus' was distributed throughout the inoculated plants, with mean C, values in the range of 30-31 for leaves and 25-28 for roots. Over time, 'Ca. L. asiaticus' reached the highest titres in mature leaves (mean C<sub>t</sub>
 value = 26.7) of citrus plants maintained at 22/27°C. 'Candidatus Liberibacter asiaticus' colonization of citrus plants was negatively affected by the daily temperature regime of 27/32°C (mean C<sub>t</sub>
 value in mature leaves = 33.6).</div>
</front>
</TEI>
<affiliations><list><country><li>Brésil</li>
</country>
<region><li>État de São Paulo</li>
</region>
<settlement><li>São Paulo</li>
</settlement>
</list>
<tree><country name="Brésil"><region name="État de São Paulo"><name sortKey="Gasparoto, M C G" sort="Gasparoto, M C G" uniqKey="Gasparoto M" first="M. C. G." last="Gasparoto">M. C. G. Gasparoto</name>
</region>
<name sortKey="Amorim, L" sort="Amorim, L" uniqKey="Amorim L" first="L." last="Amorim">L. Amorim</name>
<name sortKey="Bassanezi, R B" sort="Bassanezi, R B" uniqKey="Bassanezi R" first="R. B." last="Bassanezi">R. B. Bassanezi</name>
<name sortKey="Coletta Filho, H D" sort="Coletta Filho, H D" uniqKey="Coletta Filho H" first="H. D." last="Coletta-Filho">H. D. Coletta-Filho</name>
<name sortKey="Lopes, S A" sort="Lopes, S A" uniqKey="Lopes S" first="S. A." last="Lopes">S. A. Lopes</name>
<name sortKey="Lourenco, S A" sort="Lourenco, S A" uniqKey="Lourenco S" first="S. A." last="Lourenco">S. A. Lourenco</name>
</country>
</tree>
</affiliations>
</record>

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Influence of temperature on infection and establishment of 'Candidates Liberibacter americanus' and 'Candidatus Liberibacter asiaticus' in citrus plants

Influence of temperature on infection and establishment of 'Candidates Liberibacter americanus' and 'Candidatus Liberibacter asiaticus' in citrus plants

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)

Pour mettre un lien sur cette page dans le réseau Wicri