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Citron C-05 inhibits both the penetration and colonization of Xanthomonas citri subsp. citri to achieve resistance to citrus canker disease.

Identifieur interne : 000153 ( Main/Curation ); précédent : 000152; suivant : 000154

Citron C-05 inhibits both the penetration and colonization of Xanthomonas citri subsp. citri to achieve resistance to citrus canker disease.

Auteurs : Hongyan Fu ; Mingming Zhao ; Jing Xu ; Limei Tan ; Jian Han ; Dazhi Li ; Meijun Wang ; Shunyuan Xiao [États-Unis] ; Xianfeng Ma ; Ziniu Deng

Source :

RBID : pubmed:32377349

Abstract

Citrus canker, caused by Xanthomonas citri subsp. citri (Xcc), is a serious bacterial disease that affects citrus production worldwide. Citron C-05 (Citrus medica) is the only germplasm in the Citrus genus that has been identified to exhibit strong resistance to Xcc. However, it has not been determined when, where, and how Xcc is restricted in the tissues of Citron C-05 during the infection process. In the present study, we investigated the spatiotemporal growth dynamics of an eGFP-labeled virulent Xcc (eGFP-Xcc) strain in Citron C-05 along with five susceptible biotypes (i.e., lemon, pummelo, sour orange, sweet orange, and ponkan mandarin) upon inoculation via the spraying or leaf infiltration of a bacterial suspension. The results from extensive confocal laser scanning microscopy analyses showed that while Xcc grew rapidly in plants of all five susceptible genotypes, Xcc was severely restricted in the epidermal and mesophyll cell layers of the leaves of Citron C-05 in the early stage of infection. Not surprisingly, resistance against Xcc in Citron C-05 was found to be associated with the production of reactive oxygen species and hypersensitive response-like cell death, as well as greater upregulation of several defense-related genes, including a pathogenesis-related gene (PR1) and a glutathione S-transferase gene (GST1), compared with sweet orange as a susceptible control. Taken together, our results not only provide further valuable details of the spatiotemporal dynamics of the host entry, propagation, and spread of Xcc in both resistant and susceptible citrus plants but also suggest that resistance to Xcc in Citron C-05 may be attributed to the activation of multiple defense mechanisms.

DOI: 10.1038/s41438-020-0278-4
PubMed: 32377349
PubMed Central: PMC7193574

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pubmed:32377349

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Hongyan Fu
<affiliation>
<nlm:affiliation>1College of Horticulture, Hunan Agricultural University, 410128 Changsha, Hunan China.</nlm:affiliation>
<wicri:noCountry code="subField">Hunan China</wicri:noCountry>
</affiliation>
<affiliation>
<nlm:affiliation>National Center for Citrus Improvement, 410128 Changsha, Hunan China.</nlm:affiliation>
<wicri:noCountry code="subField">Hunan China</wicri:noCountry>
</affiliation>
Hongyan Fu
<affiliation>
<nlm:affiliation>National Center for Citrus Improvement, 410128 Changsha, Hunan China.</nlm:affiliation>
<wicri:noCountry code="subField">Hunan China</wicri:noCountry>
</affiliation>
Mingming Zhao
<affiliation>
<nlm:affiliation>1College of Horticulture, Hunan Agricultural University, 410128 Changsha, Hunan China.</nlm:affiliation>
<wicri:noCountry code="subField">Hunan China</wicri:noCountry>
</affiliation>
<affiliation>
<nlm:affiliation>National Center for Citrus Improvement, 410128 Changsha, Hunan China.</nlm:affiliation>
<wicri:noCountry code="subField">Hunan China</wicri:noCountry>
</affiliation>
Mingming Zhao
<affiliation>
<nlm:affiliation>National Center for Citrus Improvement, 410128 Changsha, Hunan China.</nlm:affiliation>
<wicri:noCountry code="subField">Hunan China</wicri:noCountry>
</affiliation>
Jing Xu
<affiliation>
<nlm:affiliation>1College of Horticulture, Hunan Agricultural University, 410128 Changsha, Hunan China.</nlm:affiliation>
<wicri:noCountry code="subField">Hunan China</wicri:noCountry>
</affiliation>
<affiliation>
<nlm:affiliation>National Center for Citrus Improvement, 410128 Changsha, Hunan China.</nlm:affiliation>
<wicri:noCountry code="subField">Hunan China</wicri:noCountry>
</affiliation>
Jing Xu
<affiliation>
<nlm:affiliation>National Center for Citrus Improvement, 410128 Changsha, Hunan China.</nlm:affiliation>
<wicri:noCountry code="subField">Hunan China</wicri:noCountry>
</affiliation>
Limei Tan
<affiliation>
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<wicri:noCountry code="subField">Hunan China</wicri:noCountry>
</affiliation>
Jian Han
<affiliation>
<nlm:affiliation>3Hunan Horticultural Research Institute, 410125 Changsha, Hunan China.</nlm:affiliation>
<wicri:noCountry code="subField">Hunan China</wicri:noCountry>
</affiliation>
Dazhi Li
<affiliation>
<nlm:affiliation>1College of Horticulture, Hunan Agricultural University, 410128 Changsha, Hunan China.</nlm:affiliation>
<wicri:noCountry code="subField">Hunan China</wicri:noCountry>
</affiliation>
<affiliation>
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<wicri:noCountry code="subField">Hunan China</wicri:noCountry>
</affiliation>
Dazhi Li
<affiliation>
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<wicri:noCountry code="subField">Hunan China</wicri:noCountry>
</affiliation>
Meijun Wang
<affiliation>
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<wicri:noCountry code="subField">Hunan China</wicri:noCountry>
</affiliation>
Xianfeng Ma
<affiliation>
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<wicri:noCountry code="subField">Hunan China</wicri:noCountry>
</affiliation>
<affiliation>
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</affiliation>
Xianfeng Ma
<affiliation>
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<wicri:noCountry code="subField">Hunan China</wicri:noCountry>
</affiliation>
Ziniu Deng
<affiliation>
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<wicri:noCountry code="subField">Hunan China</wicri:noCountry>
</affiliation>
<affiliation>
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<wicri:noCountry code="subField">Hunan China</wicri:noCountry>
</affiliation>
Ziniu Deng
<affiliation>
<nlm:affiliation>National Center for Citrus Improvement, 410128 Changsha, Hunan China.</nlm:affiliation>
<wicri:noCountry code="subField">Hunan China</wicri:noCountry>
</affiliation>

Le document en format XML

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<title xml:lang="en">Citron C-05 inhibits both the penetration and colonization of
<i>Xanthomonas citri</i>
subsp.
<i>citri</i>
to achieve resistance to citrus canker disease.</title>
<author>
<name sortKey="Fu, Hongyan" sort="Fu, Hongyan" uniqKey="Fu H" first="Hongyan" last="Fu">Hongyan Fu</name>
<affiliation>
<nlm:affiliation>1College of Horticulture, Hunan Agricultural University, 410128 Changsha, Hunan China.</nlm:affiliation>
<wicri:noCountry code="subField">Hunan China</wicri:noCountry>
</affiliation>
<affiliation>
<nlm:affiliation>National Center for Citrus Improvement, 410128 Changsha, Hunan China.</nlm:affiliation>
<wicri:noCountry code="subField">Hunan China</wicri:noCountry>
</affiliation>
</author>
<author>
<name sortKey="Zhao, Mingming" sort="Zhao, Mingming" uniqKey="Zhao M" first="Mingming" last="Zhao">Mingming Zhao</name>
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<name sortKey="Tan, Limei" sort="Tan, Limei" uniqKey="Tan L" first="Limei" last="Tan">Limei Tan</name>
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<name sortKey="Han, Jian" sort="Han, Jian" uniqKey="Han J" first="Jian" last="Han">Jian Han</name>
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<front>
<div type="abstract" xml:lang="en">Citrus canker, caused by
<i>Xanthomonas citri</i>
subsp.
<i>citri</i>
(
<i>Xcc</i>
), is a serious bacterial disease that affects citrus production worldwide. Citron C-05 (
<i>Citrus medica</i>
) is the only germplasm in the
<i>Citrus</i>
genus that has been identified to exhibit strong resistance to
<i>Xcc</i>
. However, it has not been determined when, where, and how
<i>Xcc</i>
is restricted in the tissues of Citron C-05 during the infection process. In the present study, we investigated the spatiotemporal growth dynamics of an
<i>eGFP</i>
-labeled virulent
<i>Xcc</i>
(
<i>eGFP-Xcc</i>
) strain in Citron C-05 along with five susceptible biotypes (i.e., lemon, pummelo, sour orange, sweet orange, and ponkan mandarin) upon inoculation via the spraying or leaf infiltration of a bacterial suspension. The results from extensive confocal laser scanning microscopy analyses showed that while
<i>Xcc</i>
grew rapidly in plants of all five susceptible genotypes,
<i>Xcc</i>
was severely restricted in the epidermal and mesophyll cell layers of the leaves of Citron C-05 in the early stage of infection. Not surprisingly, resistance against
<i>Xcc</i>
in Citron C-05 was found to be associated with the production of reactive oxygen species and hypersensitive response-like cell death, as well as greater upregulation of several defense-related genes, including a pathogenesis-related gene (
<i>PR1</i>
) and a glutathione S-transferase gene (
<i>GST1</i>
), compared with sweet orange as a susceptible control. Taken together, our results not only provide further valuable details of the spatiotemporal dynamics of the host entry, propagation, and spread of
<i>Xcc</i>
in both resistant and susceptible citrus plants but also suggest that resistance to
<i>Xcc</i>
in Citron C-05 may be attributed to the activation of multiple defense mechanisms.</div>
</front>
</TEI>
<pubmed>
<MedlineCitation Status="PubMed-not-MEDLINE" Owner="NLM">
<PMID Version="1">32377349</PMID>
<DateRevised>
<Year>2020</Year>
<Month>09</Month>
<Day>28</Day>
</DateRevised>
<Article PubModel="Electronic-eCollection">
<Journal>
<ISSN IssnType="Print">2052-7276</ISSN>
<JournalIssue CitedMedium="Print">
<Volume>7</Volume>
<PubDate>
<Year>2020</Year>
</PubDate>
</JournalIssue>
<Title>Horticulture research</Title>
<ISOAbbreviation>Hortic Res</ISOAbbreviation>
</Journal>
<ArticleTitle>Citron C-05 inhibits both the penetration and colonization of
<i>Xanthomonas citri</i>
subsp.
<i>citri</i>
to achieve resistance to citrus canker disease.</ArticleTitle>
<Pagination>
<MedlinePgn>58</MedlinePgn>
</Pagination>
<ELocationID EIdType="doi" ValidYN="Y">10.1038/s41438-020-0278-4</ELocationID>
<Abstract>
<AbstractText>Citrus canker, caused by
<i>Xanthomonas citri</i>
subsp.
<i>citri</i>
(
<i>Xcc</i>
), is a serious bacterial disease that affects citrus production worldwide. Citron C-05 (
<i>Citrus medica</i>
) is the only germplasm in the
<i>Citrus</i>
genus that has been identified to exhibit strong resistance to
<i>Xcc</i>
. However, it has not been determined when, where, and how
<i>Xcc</i>
is restricted in the tissues of Citron C-05 during the infection process. In the present study, we investigated the spatiotemporal growth dynamics of an
<i>eGFP</i>
-labeled virulent
<i>Xcc</i>
(
<i>eGFP-Xcc</i>
) strain in Citron C-05 along with five susceptible biotypes (i.e., lemon, pummelo, sour orange, sweet orange, and ponkan mandarin) upon inoculation via the spraying or leaf infiltration of a bacterial suspension. The results from extensive confocal laser scanning microscopy analyses showed that while
<i>Xcc</i>
grew rapidly in plants of all five susceptible genotypes,
<i>Xcc</i>
was severely restricted in the epidermal and mesophyll cell layers of the leaves of Citron C-05 in the early stage of infection. Not surprisingly, resistance against
<i>Xcc</i>
in Citron C-05 was found to be associated with the production of reactive oxygen species and hypersensitive response-like cell death, as well as greater upregulation of several defense-related genes, including a pathogenesis-related gene (
<i>PR1</i>
) and a glutathione S-transferase gene (
<i>GST1</i>
), compared with sweet orange as a susceptible control. Taken together, our results not only provide further valuable details of the spatiotemporal dynamics of the host entry, propagation, and spread of
<i>Xcc</i>
in both resistant and susceptible citrus plants but also suggest that resistance to
<i>Xcc</i>
in Citron C-05 may be attributed to the activation of multiple defense mechanisms.</AbstractText>
<CopyrightInformation>© The Author(s) 2020.</CopyrightInformation>
</Abstract>
<AuthorList CompleteYN="Y">
<Author ValidYN="Y">
<LastName>Fu</LastName>
<ForeName>Hongyan</ForeName>
<Initials>H</Initials>
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</AffiliationInfo>
<AffiliationInfo>
<Affiliation>National Center for Citrus Improvement, 410128 Changsha, Hunan China.</Affiliation>
</AffiliationInfo>
</Author>
<Author ValidYN="Y">
<LastName>Zhao</LastName>
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