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Wheat Gene TaATG8j Contributes to Stripe Rust Resistance.

Identifieur interne : 000148 ( Main/Exploration ); précédent : 000147; suivant : 000149

Wheat Gene TaATG8j Contributes to Stripe Rust Resistance.

Auteurs : Md Abdullah-Al Mamun [République populaire de Chine, Bangladesh] ; Chunlei Tang [République populaire de Chine] ; Yingchao Sun [République populaire de Chine] ; Md Nazrul Islam [République populaire de Chine, Bangladesh] ; Peng Liu [République populaire de Chine] ; Xiaojie Wang [République populaire de Chine] ; Zhensheng Kang [République populaire de Chine]

Source :

RBID : pubmed:29874811

Descripteurs français

English descriptors

Abstract

Autophagy-related 8 (ATG8) protein has been reported to be involved in plant's innate immune response, but it is not clear whether such genes play a similar role in cereal crops against obligate biotrophic fungal pathogens. Here, we reported an ATG8 gene from wheat (Triticum aestivum), designated TaATG8j. This gene has three copies located in chromosomes 2AS, 2BS, and 2DS. The transcriptions of all three copies were upregulated in plants of the wheat cultivar Suwon 11, inoculated with an avirulent race (CYR23) of Puccinia striiformis f. sp. tritici (Pst), the causal fungal pathogen of stripe rust. The transient expression of TaATG8j in Nicotiana benthamiana showed that TaATG8j proteins were distributed throughout the cytoplasm, but mainly in the nucleus and plasma membrane. The overexpression of TaATG8j in N. benthamiana slightly delayed the cell death caused by the mouse apoptotic protein BAX (BCL2-associated X protein). However, the expression of TaATG8j in yeast (Schizosaccharomyces pombe) induced cell death. The virus-induced gene silencing of all TaATG8j copies rendered Suwon 11 susceptible to the avirulent Pst race CYR23, accompanied by an increased fungal biomass and a decreased necrotic area per infection site. These results indicate that TaATG8j contributes to wheat resistance against stripe rust fungus by regulating cell death, providing information for the understanding of the mechanisms of wheat resistance to the stripe rust pathogen.

DOI: 10.3390/ijms19061666
PubMed: 29874811
PubMed Central: PMC6032272


Affiliations:


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Le document en format XML

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<term>Autophagy-Related Protein 8 Family (genetics)</term>
<term>Basidiomycota (genetics)</term>
<term>Basidiomycota (pathogenicity)</term>
<term>Gene Expression Regulation, Plant (genetics)</term>
<term>Host-Pathogen Interactions (genetics)</term>
<term>Immunity, Innate (genetics)</term>
<term>Plant Diseases (genetics)</term>
<term>Plant Diseases (microbiology)</term>
<term>Plant Leaves (genetics)</term>
<term>Plant Leaves (metabolism)</term>
<term>Plant Leaves (microbiology)</term>
<term>Plant Proteins (genetics)</term>
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<term>Triticum (growth & development)</term>
<term>Triticum (microbiology)</term>
</keywords>
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<term>Basidiomycota (génétique)</term>
<term>Basidiomycota (pathogénicité)</term>
<term>Famille de la protéine-8 associée à l'autophagie (génétique)</term>
<term>Feuilles de plante (génétique)</term>
<term>Feuilles de plante (microbiologie)</term>
<term>Feuilles de plante (métabolisme)</term>
<term>Immunité innée (génétique)</term>
<term>Interactions hôte-pathogène (génétique)</term>
<term>Maladies des plantes (génétique)</term>
<term>Maladies des plantes (microbiologie)</term>
<term>Protéines végétales (génétique)</term>
<term>Régulation de l'expression des gènes végétaux (génétique)</term>
<term>Triticum (croissance et développement)</term>
<term>Triticum (génétique)</term>
<term>Triticum (microbiologie)</term>
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<term>Plant Proteins</term>
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</keywords>
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<term>Basidiomycota</term>
<term>Gene Expression Regulation, Plant</term>
<term>Host-Pathogen Interactions</term>
<term>Immunity, Innate</term>
<term>Plant Diseases</term>
<term>Plant Leaves</term>
<term>Triticum</term>
</keywords>
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<term>Triticum</term>
</keywords>
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<term>Basidiomycota</term>
<term>Famille de la protéine-8 associée à l'autophagie</term>
<term>Feuilles de plante</term>
<term>Immunité innée</term>
<term>Interactions hôte-pathogène</term>
<term>Maladies des plantes</term>
<term>Protéines végétales</term>
<term>Régulation de l'expression des gènes végétaux</term>
<term>Triticum</term>
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<term>Plant Leaves</term>
</keywords>
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<term>Feuilles de plante</term>
<term>Maladies des plantes</term>
<term>Triticum</term>
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<front>
<div type="abstract" xml:lang="en">Autophagy-related 8 (ATG8) protein has been reported to be involved in plant's innate immune response, but it is not clear whether such genes play a similar role in cereal crops against obligate biotrophic fungal pathogens. Here, we reported an
<i>ATG8</i>
gene from wheat (
<i>Triticum aestivum</i>
), designated
<i>TaATG8j</i>
. This gene has three copies located in chromosomes 2AS, 2BS, and 2DS. The transcriptions of all three copies were upregulated in plants of the wheat cultivar Suwon 11, inoculated with an avirulent race (CYR23) of
<i>Puccinia striiformis</i>
f. sp.
<i>tritici</i>
(
<i>Pst</i>
), the causal fungal pathogen of stripe rust. The transient expression of
<i>TaATG8j</i>
in
<i>Nicotiana benthamiana</i>
showed that TaATG8j proteins were distributed throughout the cytoplasm, but mainly in the nucleus and plasma membrane. The overexpression of
<i>TaATG8j</i>
in
<i>N. benthamiana</i>
slightly delayed the cell death caused by the mouse apoptotic protein BAX (BCL2-associated X protein). However, the expression of
<i>TaATG8j</i>
in yeast (
<i>Schizosaccharomyces pombe</i>
) induced cell death. The virus-induced gene silencing of all
<i>TaATG8j</i>
copies rendered Suwon 11 susceptible to the avirulent
<i>Pst</i>
race CYR23, accompanied by an increased fungal biomass and a decreased necrotic area per infection site. These results indicate that
<i>TaATG8j</i>
contributes to wheat resistance against stripe rust fungus by regulating cell death, providing information for the understanding of the mechanisms of wheat resistance to the stripe rust pathogen.</div>
</front>
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<DateCompleted>
<Year>2018</Year>
<Month>10</Month>
<Day>15</Day>
</DateCompleted>
<DateRevised>
<Year>2018</Year>
<Month>11</Month>
<Day>14</Day>
</DateRevised>
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<Journal>
<ISSN IssnType="Electronic">1422-0067</ISSN>
<JournalIssue CitedMedium="Internet">
<Volume>19</Volume>
<Issue>6</Issue>
<PubDate>
<Year>2018</Year>
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<Title>International journal of molecular sciences</Title>
<ISOAbbreviation>Int J Mol Sci</ISOAbbreviation>
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<ArticleTitle>Wheat Gene
<i>TaATG8j</i>
Contributes to Stripe Rust Resistance.</ArticleTitle>
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<ELocationID EIdType="doi" ValidYN="Y">10.3390/ijms19061666</ELocationID>
<Abstract>
<AbstractText>Autophagy-related 8 (ATG8) protein has been reported to be involved in plant's innate immune response, but it is not clear whether such genes play a similar role in cereal crops against obligate biotrophic fungal pathogens. Here, we reported an
<i>ATG8</i>
gene from wheat (
<i>Triticum aestivum</i>
), designated
<i>TaATG8j</i>
. This gene has three copies located in chromosomes 2AS, 2BS, and 2DS. The transcriptions of all three copies were upregulated in plants of the wheat cultivar Suwon 11, inoculated with an avirulent race (CYR23) of
<i>Puccinia striiformis</i>
f. sp.
<i>tritici</i>
(
<i>Pst</i>
), the causal fungal pathogen of stripe rust. The transient expression of
<i>TaATG8j</i>
in
<i>Nicotiana benthamiana</i>
showed that TaATG8j proteins were distributed throughout the cytoplasm, but mainly in the nucleus and plasma membrane. The overexpression of
<i>TaATG8j</i>
in
<i>N. benthamiana</i>
slightly delayed the cell death caused by the mouse apoptotic protein BAX (BCL2-associated X protein). However, the expression of
<i>TaATG8j</i>
in yeast (
<i>Schizosaccharomyces pombe</i>
) induced cell death. The virus-induced gene silencing of all
<i>TaATG8j</i>
copies rendered Suwon 11 susceptible to the avirulent
<i>Pst</i>
race CYR23, accompanied by an increased fungal biomass and a decreased necrotic area per infection site. These results indicate that
<i>TaATG8j</i>
contributes to wheat resistance against stripe rust fungus by regulating cell death, providing information for the understanding of the mechanisms of wheat resistance to the stripe rust pathogen.</AbstractText>
</Abstract>
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<LastName>Mamun</LastName>
<ForeName>Md Abdullah-Al</ForeName>
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<Affiliation>State Key Laboratory of Crop Stress Biology for Arid Areas and College of Plant Protection, Northwest A&F University, Yangling 712100, China. mamunrwrc@yahoo.com.</Affiliation>
</AffiliationInfo>
<AffiliationInfo>
<Affiliation>Regional Wheat Research Centre, Bangladesh Agricultural Research Institute, Shyampur, Rajshahi-6212, Bangladesh. mamunrwrc@yahoo.com.</Affiliation>
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