α-Expansin EXPA4 Positively Regulates Abiotic Stress Tolerance but Negatively Regulates Pathogen Resistance in Nicotiana tabacum.
Identifieur interne : 000145 ( Main/Exploration ); précédent : 000144; suivant : 000146α-Expansin EXPA4 Positively Regulates Abiotic Stress Tolerance but Negatively Regulates Pathogen Resistance in Nicotiana tabacum.
Auteurs : Li-Juan Chen [République populaire de Chine] ; Wen-Shan Zou [République populaire de Chine] ; Chun-Yan Fei [République populaire de Chine] ; Guo Wu [République populaire de Chine] ; Xin-Yuan Li [République populaire de Chine] ; Hong-Hui Lin [République populaire de Chine] ; De-Hui Xi [République populaire de Chine]Source :
- Plant & cell physiology [ 1471-9053 ] ; 2018.
Descripteurs français
- KwdFr :
- Antioxydants (métabolisme), Déshydratation (physiopathologie), Facteur de croissance végétal (physiologie), Maladies des plantes (MeSH), Protéines végétales (physiologie), Pseudomonas syringae (MeSH), Régulation de l'expression des gènes végétaux (MeSH), Résistance à la maladie (physiologie), Tabac (génétique), Tabac (physiologie), Tabac (virologie), Tolérance au sel (physiologie), Virus de la mosaïque du tabac (MeSH), Végétaux génétiquement modifiés (MeSH).
- MESH :
- génétique : Tabac.
- métabolisme : Antioxydants.
- physiologie : Facteur de croissance végétal, Protéines végétales, Résistance à la maladie, Tabac, Tolérance au sel.
- physiopathologie : Déshydratation.
- virologie : Tabac.
- Maladies des plantes, Pseudomonas syringae, Régulation de l'expression des gènes végétaux, Virus de la mosaïque du tabac, Végétaux génétiquement modifiés.
English descriptors
- KwdEn :
- Antioxidants (metabolism), Dehydration (physiopathology), Disease Resistance (physiology), Gene Expression Regulation, Plant (MeSH), Plant Diseases (MeSH), Plant Growth Regulators (physiology), Plant Proteins (physiology), Plants, Genetically Modified (MeSH), Pseudomonas syringae (MeSH), Salt Tolerance (physiology), Tobacco (genetics), Tobacco (physiology), Tobacco (virology), Tobacco Mosaic Virus (MeSH).
- MESH :
- chemical , metabolism : Antioxidants.
- genetics : Tobacco.
- physiology : Disease Resistance, Plant Growth Regulators, Plant Proteins, Salt Tolerance, Tobacco.
- physiopathology : Dehydration.
- virology : Tobacco.
- Gene Expression Regulation, Plant, Plant Diseases, Plants, Genetically Modified, Pseudomonas syringae, Tobacco Mosaic Virus.
Abstract
Since they function as cell wall-loosening proteins, expansins can affect plant growth, developmental processes and environmental stress responses. Our previous study demonstrated that changes in Nicotiana tabacum α-expansin 4 (EXPA4) expression affect the sensitivity of tobacco to Tobacco mosaic virus [recombinant TMV encoding green fluorescent protein (TMV-GFP)] infection by Agrobacterium-mediated transient expression. In this study, to characterize the function of tobacco EXPA4 further, EXPA4 RNA interfernce (RNAi) mutants and overexpression lines were generated and assayed for their tolerance to abiotic stress and resistance to pathogens. First, the differential phenotypes and histomorphology of transgenic plants with altered EXPA4 expression indicated that EXPA4 is essential for normal tobacco growth and development. By utilizing tobacco EXPA4 mutants with abiotic stress, it was demonstrated that RNAi mutants have increased hypersensitivity to salt and drought stress. In contrast, the overexpression of EXPA4 in tobacco conferred greater tolerance to salt and drought stress, as indicated by less cell damage, higher fresh weight, higher soluble sugar and proline accumulation, and higher expression levels of several stress-responsive genes. In addition, the overexpression lines were more susceptible to the viral pathogen TMV-GFP when compared with the wild type or RNAi mutants. The induction of the antioxidant system, several defense-associated phytohormones and gene expression was down-regulated in overexpression lines but up-regulated in RNAi mutants when compared with the wild type following TMV-GFP infection. In addition, EXPA4 overexpression also accelerated the disease development of Pseudomonas syringae DC3000 on tobacco. Taken together, these results suggested that EXPA4 appears to be important in tobacco growth and responses to abiotic and biotic stress.
DOI: 10.1093/pcp/pcy155
PubMed: 30124953
Affiliations:
Links toward previous steps (curation, corpus...)
Le document en format XML
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University, Chengdu, Sichuan, PR China.</nlm:affiliation><country xml:lang="fr">République populaire de Chine</country><wicri:regionArea>Key Laboratory of Bio-Resource and Eco-Environment of Ministry of Education, College of Life Sciences, Sichuan University, Chengdu, Sichuan</wicri:regionArea><wicri:noRegion>Sichuan</wicri:noRegion></affiliation></author><author><name sortKey="Xi, De Hui" sort="Xi, De Hui" uniqKey="Xi D" first="De-Hui" last="Xi">De-Hui Xi</name><affiliation wicri:level="1"><nlm:affiliation>Key Laboratory of Bio-Resource and Eco-Environment of Ministry of Education, College of Life Sciences, Sichuan University, Chengdu, Sichuan, PR China.</nlm:affiliation><country xml:lang="fr">République populaire de Chine</country><wicri:regionArea>Key Laboratory of Bio-Resource and Eco-Environment of Ministry of Education, College of Life Sciences, Sichuan University, Chengdu, Sichuan</wicri:regionArea><wicri:noRegion>Sichuan</wicri:noRegion></affiliation></author></analytic><series><title level="j">Plant & cell physiology</title><idno type="eISSN">1471-9053</idno><imprint><date when="2018" type="published">2018</date></imprint></series></biblStruct></sourceDesc></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Antioxidants (metabolism)</term><term>Dehydration (physiopathology)</term><term>Disease Resistance (physiology)</term><term>Gene Expression Regulation, Plant (MeSH)</term><term>Plant Diseases (MeSH)</term><term>Plant Growth Regulators (physiology)</term><term>Plant Proteins (physiology)</term><term>Plants, Genetically Modified (MeSH)</term><term>Pseudomonas syringae (MeSH)</term><term>Salt Tolerance (physiology)</term><term>Tobacco (genetics)</term><term>Tobacco (physiology)</term><term>Tobacco (virology)</term><term>Tobacco Mosaic Virus (MeSH)</term></keywords><keywords scheme="KwdFr" xml:lang="fr"><term>Antioxydants (métabolisme)</term><term>Déshydratation (physiopathologie)</term><term>Facteur de croissance végétal (physiologie)</term><term>Maladies des plantes (MeSH)</term><term>Protéines végétales (physiologie)</term><term>Pseudomonas syringae (MeSH)</term><term>Régulation de l'expression des gènes végétaux (MeSH)</term><term>Résistance à la maladie (physiologie)</term><term>Tabac (génétique)</term><term>Tabac (physiologie)</term><term>Tabac (virologie)</term><term>Tolérance au sel (physiologie)</term><term>Virus de la mosaïque du tabac (MeSH)</term><term>Végétaux génétiquement modifiés (MeSH)</term></keywords><keywords scheme="MESH" type="chemical" qualifier="metabolism" xml:lang="en"><term>Antioxidants</term></keywords><keywords scheme="MESH" qualifier="genetics" xml:lang="en"><term>Tobacco</term></keywords><keywords scheme="MESH" qualifier="génétique" xml:lang="fr"><term>Tabac</term></keywords><keywords scheme="MESH" qualifier="métabolisme" xml:lang="fr"><term>Antioxydants</term></keywords><keywords scheme="MESH" qualifier="physiologie" xml:lang="fr"><term>Facteur de croissance végétal</term><term>Protéines végétales</term><term>Résistance à la maladie</term><term>Tabac</term><term>Tolérance au sel</term></keywords><keywords scheme="MESH" qualifier="physiology" xml:lang="en"><term>Disease Resistance</term><term>Plant Growth Regulators</term><term>Plant Proteins</term><term>Salt Tolerance</term><term>Tobacco</term></keywords><keywords scheme="MESH" qualifier="physiopathologie" xml:lang="fr"><term>Déshydratation</term></keywords><keywords scheme="MESH" qualifier="physiopathology" xml:lang="en"><term>Dehydration</term></keywords><keywords scheme="MESH" qualifier="virologie" xml:lang="fr"><term>Tabac</term></keywords><keywords scheme="MESH" qualifier="virology" xml:lang="en"><term>Tobacco</term></keywords><keywords scheme="MESH" xml:lang="en"><term>Gene Expression Regulation, Plant</term><term>Plant Diseases</term><term>Plants, Genetically Modified</term><term>Pseudomonas syringae</term><term>Tobacco Mosaic Virus</term></keywords><keywords scheme="MESH" xml:lang="fr"><term>Maladies des plantes</term><term>Pseudomonas syringae</term><term>Régulation de l'expression des gènes végétaux</term><term>Virus de la mosaïque du tabac</term><term>Végétaux génétiquement modifiés</term></keywords></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">Since they function as cell wall-loosening proteins, expansins can affect plant growth, developmental processes and environmental stress responses. Our previous study demonstrated that changes in Nicotiana tabacum α-expansin 4 (EXPA4) expression affect the sensitivity of tobacco to Tobacco mosaic virus [recombinant TMV encoding green fluorescent protein (TMV-GFP)] infection by Agrobacterium-mediated transient expression. In this study, to characterize the function of tobacco EXPA4 further, EXPA4 RNA interfernce (RNAi) mutants and overexpression lines were generated and assayed for their tolerance to abiotic stress and resistance to pathogens. First, the differential phenotypes and histomorphology of transgenic plants with altered EXPA4 expression indicated that EXPA4 is essential for normal tobacco growth and development. By utilizing tobacco EXPA4 mutants with abiotic stress, it was demonstrated that RNAi mutants have increased hypersensitivity to salt and drought stress. In contrast, the overexpression of EXPA4 in tobacco conferred greater tolerance to salt and drought stress, as indicated by less cell damage, higher fresh weight, higher soluble sugar and proline accumulation, and higher expression levels of several stress-responsive genes. In addition, the overexpression lines were more susceptible to the viral pathogen TMV-GFP when compared with the wild type or RNAi mutants. The induction of the antioxidant system, several defense-associated phytohormones and gene expression was down-regulated in overexpression lines but up-regulated in RNAi mutants when compared with the wild type following TMV-GFP infection. In addition, EXPA4 overexpression also accelerated the disease development of Pseudomonas syringae DC3000 on tobacco. Taken together, these results suggested that EXPA4 appears to be important in tobacco growth and responses to abiotic and biotic stress.</div></front></TEI><pubmed><MedlineCitation Status="MEDLINE" Owner="NLM"><PMID Version="1">30124953</PMID><DateCompleted><Year>2018</Year><Month>11</Month><Day>26</Day></DateCompleted><DateRevised><Year>2018</Year><Month>12</Month><Day>02</Day></DateRevised><Article PubModel="Print"><Journal><ISSN IssnType="Electronic">1471-9053</ISSN><JournalIssue CitedMedium="Internet"><Volume>59</Volume><Issue>11</Issue><PubDate><Year>2018</Year><Month>Nov</Month><Day>01</Day></PubDate></JournalIssue><Title>Plant & cell physiology</Title><ISOAbbreviation>Plant Cell Physiol</ISOAbbreviation></Journal><ArticleTitle>α-Expansin EXPA4 Positively Regulates Abiotic Stress Tolerance but Negatively Regulates Pathogen Resistance in Nicotiana tabacum.</ArticleTitle><Pagination><MedlinePgn>2317-2330</MedlinePgn></Pagination><ELocationID EIdType="doi" ValidYN="Y">10.1093/pcp/pcy155</ELocationID><Abstract><AbstractText>Since they function as cell wall-loosening proteins, expansins can affect plant growth, developmental processes and environmental stress responses. Our previous study demonstrated that changes in Nicotiana tabacum α-expansin 4 (EXPA4) expression affect the sensitivity of tobacco to Tobacco mosaic virus [recombinant TMV encoding green fluorescent protein (TMV-GFP)] infection by Agrobacterium-mediated transient expression. In this study, to characterize the function of tobacco EXPA4 further, EXPA4 RNA interfernce (RNAi) mutants and overexpression lines were generated and assayed for their tolerance to abiotic stress and resistance to pathogens. First, the differential phenotypes and histomorphology of transgenic plants with altered EXPA4 expression indicated that EXPA4 is essential for normal tobacco growth and development. By utilizing tobacco EXPA4 mutants with abiotic stress, it was demonstrated that RNAi mutants have increased hypersensitivity to salt and drought stress. In contrast, the overexpression of EXPA4 in tobacco conferred greater tolerance to salt and drought stress, as indicated by less cell damage, higher fresh weight, higher soluble sugar and proline accumulation, and higher expression levels of several stress-responsive genes. In addition, the overexpression lines were more susceptible to the viral pathogen TMV-GFP when compared with the wild type or RNAi mutants. The induction of the antioxidant system, several defense-associated phytohormones and gene expression was down-regulated in overexpression lines but up-regulated in RNAi mutants when compared with the wild type following TMV-GFP infection. In addition, EXPA4 overexpression also accelerated the disease development of Pseudomonas syringae DC3000 on tobacco. Taken together, these results suggested that EXPA4 appears to be important in tobacco growth and responses to abiotic and biotic stress.</AbstractText></Abstract><AuthorList CompleteYN="Y"><Author ValidYN="Y"><LastName>Chen</LastName><ForeName>Li-Juan</ForeName><Initials>LJ</Initials><AffiliationInfo><Affiliation>Key Laboratory of Bio-Resource and Eco-Environment of Ministry of Education, College of Life Sciences, Sichuan University, Chengdu, Sichuan, PR China.</Affiliation></AffiliationInfo></Author><Author ValidYN="Y"><LastName>Zou</LastName><ForeName>Wen-Shan</ForeName><Initials>WS</Initials><AffiliationInfo><Affiliation>Key Laboratory of Bio-Resource and Eco-Environment of Ministry of Education, College of Life Sciences, Sichuan University, Chengdu, Sichuan, PR China.</Affiliation></AffiliationInfo></Author><Author ValidYN="Y"><LastName>Fei</LastName><ForeName>Chun-Yan</ForeName><Initials>CY</Initials><AffiliationInfo><Affiliation>Key Laboratory of Bio-Resource and Eco-Environment of Ministry of Education, College of Life Sciences, Sichuan University, Chengdu, Sichuan, PR China.</Affiliation></AffiliationInfo></Author><Author ValidYN="Y"><LastName>Wu</LastName><ForeName>Guo</ForeName><Initials>G</Initials><AffiliationInfo><Affiliation>Key Laboratory of Bio-Resource and Eco-Environment of Ministry of Education, College of Life Sciences, Sichuan University, Chengdu, Sichuan, PR China.</Affiliation></AffiliationInfo></Author><Author ValidYN="Y"><LastName>Li</LastName><ForeName>Xin-Yuan</ForeName><Initials>XY</Initials><AffiliationInfo><Affiliation>Key Laboratory of Bio-Resource and Eco-Environment of Ministry of Education, College of Life Sciences, Sichuan University, Chengdu, Sichuan, PR China.</Affiliation></AffiliationInfo></Author><Author ValidYN="Y"><LastName>Lin</LastName><ForeName>Hong-Hui</ForeName><Initials>HH</Initials><AffiliationInfo><Affiliation>Key Laboratory of Bio-Resource and Eco-Environment of Ministry of Education, College of Life Sciences, Sichuan University, Chengdu, Sichuan, PR China.</Affiliation></AffiliationInfo></Author><Author ValidYN="Y"><LastName>Xi</LastName><ForeName>De-Hui</ForeName><Initials>DH</Initials><AffiliationInfo><Affiliation>Key Laboratory of Bio-Resource and Eco-Environment of Ministry of Education, College of Life Sciences, Sichuan University, Chengdu, Sichuan, PR China.</Affiliation></AffiliationInfo></Author></AuthorList><Language>eng</Language><PublicationTypeList><PublicationType UI="D016428">Journal Article</PublicationType></PublicationTypeList></Article><MedlineJournalInfo><Country>Japan</Country><MedlineTA>Plant Cell Physiol</MedlineTA><NlmUniqueID>9430925</NlmUniqueID><ISSNLinking>0032-0781</ISSNLinking></MedlineJournalInfo><ChemicalList><Chemical><RegistryNumber>0</RegistryNumber><NameOfSubstance UI="D000975">Antioxidants</NameOfSubstance></Chemical><Chemical><RegistryNumber>0</RegistryNumber><NameOfSubstance UI="D010937">Plant Growth Regulators</NameOfSubstance></Chemical><Chemical><RegistryNumber>0</RegistryNumber><NameOfSubstance UI="D010940">Plant Proteins</NameOfSubstance></Chemical><Chemical><RegistryNumber>0</RegistryNumber><NameOfSubstance UI="C095825">expansin protein, plant</NameOfSubstance></Chemical></ChemicalList><CitationSubset>IM</CitationSubset><MeshHeadingList><MeshHeading><DescriptorName UI="D000975" MajorTopicYN="N">Antioxidants</DescriptorName><QualifierName UI="Q000378" MajorTopicYN="N">metabolism</QualifierName></MeshHeading><MeshHeading><DescriptorName UI="D003681" MajorTopicYN="N">Dehydration</DescriptorName><QualifierName UI="Q000503" MajorTopicYN="N">physiopathology</QualifierName></MeshHeading><MeshHeading><DescriptorName UI="D060467" MajorTopicYN="N">Disease Resistance</DescriptorName><QualifierName UI="Q000502" MajorTopicYN="Y">physiology</QualifierName></MeshHeading><MeshHeading><DescriptorName UI="D018506" MajorTopicYN="N">Gene Expression Regulation, Plant</DescriptorName></MeshHeading><MeshHeading><DescriptorName UI="D010935" MajorTopicYN="N">Plant Diseases</DescriptorName></MeshHeading><MeshHeading><DescriptorName UI="D010937" MajorTopicYN="N">Plant Growth Regulators</DescriptorName><QualifierName UI="Q000502" MajorTopicYN="N">physiology</QualifierName></MeshHeading><MeshHeading><DescriptorName UI="D010940" MajorTopicYN="N">Plant Proteins</DescriptorName><QualifierName UI="Q000502" MajorTopicYN="Y">physiology</QualifierName></MeshHeading><MeshHeading><DescriptorName UI="D030821" MajorTopicYN="N">Plants, Genetically Modified</DescriptorName></MeshHeading><MeshHeading><DescriptorName UI="D044224" MajorTopicYN="N">Pseudomonas syringae</DescriptorName></MeshHeading><MeshHeading><DescriptorName UI="D055049" MajorTopicYN="N">Salt Tolerance</DescriptorName><QualifierName UI="Q000502" MajorTopicYN="N">physiology</QualifierName></MeshHeading><MeshHeading><DescriptorName UI="D014026" MajorTopicYN="N">Tobacco</DescriptorName><QualifierName UI="Q000235" MajorTopicYN="N">genetics</QualifierName><QualifierName UI="Q000502" MajorTopicYN="Y">physiology</QualifierName><QualifierName UI="Q000821" MajorTopicYN="N">virology</QualifierName></MeshHeading><MeshHeading><DescriptorName UI="D014027" MajorTopicYN="N">Tobacco Mosaic Virus</DescriptorName></MeshHeading></MeshHeadingList></MedlineCitation><PubmedData><History><PubMedPubDate PubStatus="received"><Year>2017</Year><Month>12</Month><Day>14</Day></PubMedPubDate><PubMedPubDate PubStatus="accepted"><Year>2018</Year><Month>07</Month><Day>30</Day></PubMedPubDate><PubMedPubDate PubStatus="pubmed"><Year>2018</Year><Month>8</Month><Day>21</Day><Hour>6</Hour><Minute>0</Minute></PubMedPubDate><PubMedPubDate PubStatus="medline"><Year>2018</Year><Month>11</Month><Day>27</Day><Hour>6</Hour><Minute>0</Minute></PubMedPubDate><PubMedPubDate PubStatus="entrez"><Year>2018</Year><Month>8</Month><Day>21</Day><Hour>6</Hour><Minute>0</Minute></PubMedPubDate></History><PublicationStatus>ppublish</PublicationStatus><ArticleIdList><ArticleId IdType="pubmed">30124953</ArticleId><ArticleId IdType="pii">5074289</ArticleId><ArticleId IdType="doi">10.1093/pcp/pcy155</ArticleId></ArticleIdList></PubmedData></pubmed><affiliations><list><country><li>République populaire de Chine</li></country></list><tree><country name="République populaire de Chine"><noRegion><name sortKey="Chen, Li Juan" sort="Chen, Li Juan" uniqKey="Chen L" first="Li-Juan" last="Chen">Li-Juan Chen</name></noRegion><name sortKey="Fei, Chun Yan" sort="Fei, Chun Yan" uniqKey="Fei C" first="Chun-Yan" last="Fei">Chun-Yan Fei</name><name sortKey="Li, Xin Yuan" sort="Li, Xin Yuan" uniqKey="Li X" first="Xin-Yuan" last="Li">Xin-Yuan Li</name><name sortKey="Lin, Hong Hui" sort="Lin, Hong Hui" uniqKey="Lin H" first="Hong-Hui" last="Lin">Hong-Hui Lin</name><name sortKey="Wu, Guo" sort="Wu, Guo" uniqKey="Wu G" first="Guo" last="Wu">Guo Wu</name><name sortKey="Xi, De Hui" sort="Xi, De Hui" uniqKey="Xi D" first="De-Hui" last="Xi">De-Hui Xi</name><name sortKey="Zou, Wen Shan" sort="Zou, Wen Shan" uniqKey="Zou W" first="Wen-Shan" last="Zou">Wen-Shan Zou</name></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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