TARGET OF RAPAMYCIN signaling plays a role in Arabidopsis growth promotion by Azospirillum brasilense Sp245.
Identifieur interne : 000037 ( Main/Exploration ); précédent : 000036; suivant : 000038TARGET OF RAPAMYCIN signaling plays a role in Arabidopsis growth promotion by Azospirillum brasilense Sp245.
Auteurs : Manuel Méndez-G Mez [Mexique] ; Elda Castro-Mercado [Mexique] ; César Arturo Pe A-Uribe [Mexique] ; Homero Reyes-De La Cruz [Mexique] ; José L Pez-Bucio [Mexique] ; Ernesto García-Pineda [Mexique]Source :
- Plant science : an international journal of experimental plant biology [ 1873-2259 ] ; 2020.
Descripteurs français
- KwdFr :
- Acides indolacétiques (métabolisme), Arabidopsis (croissance et développement), Arabidopsis (métabolisme), Azospirillum brasilense (physiologie), Développement des plantes (MeSH), Méristème (métabolisme), Phosphatidylinositol 3-kinases (effets des médicaments et des substances chimiques), Phosphatidylinositol 3-kinases (métabolisme), Phosphorylation (MeSH), Protéines d'Arabidopsis (effets des médicaments et des substances chimiques), Protéines d'Arabidopsis (métabolisme), Quinoléines (antagonistes et inhibiteurs), Racines de plante (microbiologie), Racines de plante (métabolisme), Rhizobiaceae (MeSH), Transduction du signal (physiologie), Triazoles (antagonistes et inhibiteurs).
- MESH :
- antagonistes et inhibiteurs : Quinoléines, Triazoles.
- croissance et développement : Arabidopsis.
- effets des médicaments et des substances chimiques : Phosphatidylinositol 3-kinases, Protéines d'Arabidopsis.
- microbiologie : Racines de plante.
- métabolisme : Acides indolacétiques, Arabidopsis, Méristème, Phosphatidylinositol 3-kinases, Protéines d'Arabidopsis, Racines de plante.
- physiologie : Azospirillum brasilense, Transduction du signal.
- Développement des plantes, Phosphorylation, Rhizobiaceae.
English descriptors
- KwdEn :
- Arabidopsis (growth & development), Arabidopsis (metabolism), Arabidopsis Proteins (drug effects), Arabidopsis Proteins (metabolism), Azospirillum brasilense (physiology), Indoleacetic Acids (metabolism), Meristem (metabolism), Phosphatidylinositol 3-Kinases (drug effects), Phosphatidylinositol 3-Kinases (metabolism), Phosphorylation (MeSH), Plant Development (MeSH), Plant Roots (metabolism), Plant Roots (microbiology), Quinolines (antagonists & inhibitors), Rhizobiaceae (MeSH), Signal Transduction (physiology), Triazoles (antagonists & inhibitors).
- MESH :
- chemical , antagonists & inhibitors : Quinolines, Triazoles.
- chemical , drug effects : Arabidopsis Proteins.
- drug effects : Phosphatidylinositol 3-Kinases.
- growth & development : Arabidopsis.
- metabolism : Arabidopsis, Arabidopsis Proteins, Indoleacetic Acids, Meristem, Phosphatidylinositol 3-Kinases, Plant Roots.
- microbiology : Plant Roots.
- physiology : Azospirillum brasilense, Signal Transduction.
- Phosphorylation, Plant Development, Rhizobiaceae.
Abstract
Azospirillum brasilense colonizes plant roots and improves productivity, but the molecular mechanisms behind its phytostimulation properties remain mostly unknown. Here, we uncover an important role of TARGET OF RAPAMYCIN (TOR) signaling on the response of Arabidopsis thaliana to A. brasilense Sp245. The effect of the bacterium on TOR expression was analyzed in the transgenic line TOR/tor-1, which carries a translational fusion with the GUS reporter protein, and the activity of TOR was assayed thought the phosphorylation of its downstream signaling target S6K protein. Besides, the role of TOR on plant growth in inoculated plants was assessed using the ATP-competitive inhibitor AZD-8055. A decrease in growth of the primary root correlates with an improved branching and absorptive capacity via lateral root and root hair proliferation 6 days after transplant to different concentrations of the bacterium (103 or 105 CFU/mL). Bacterization increased the expression of TOR in shoot and root apexes and promoted phosphorylation of S6K 3 days after transplant. The TOR inhibitor AZD-8055 (1 μM) inhibited plant growth and cell division in root meristems and in lateral root primordia, interfering with the phytostimulation by A. brasilense. In addition, the role of auxin produced by the bacterium to stimulate TOR expression was explored. Noteworthy, the A. brasilense mutant FAJ009, impaired in auxin production, was unable to elicit TOR signaling to the level observed for the wild-type strain, showing the importance of this phyhormone to stimulate TOR signaling. Together, our findings establish an important role of TOR signaling for the probiotic traits elicited by A. brasilense in A. thaliana.
DOI: 10.1016/j.plantsci.2020.110416
PubMed: 32081264
Affiliations:
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Here, we uncover an important role of TARGET OF RAPAMYCIN (TOR) signaling on the response of Arabidopsis thaliana to A. brasilense Sp245. The effect of the bacterium on TOR expression was analyzed in the transgenic line TOR/tor-1, which carries a translational fusion with the GUS reporter protein, and the activity of TOR was assayed thought the phosphorylation of its downstream signaling target S6K protein. Besides, the role of TOR on plant growth in inoculated plants was assessed using the ATP-competitive inhibitor AZD-8055. A decrease in growth of the primary root correlates with an improved branching and absorptive capacity via lateral root and root hair proliferation 6 days after transplant to different concentrations of the bacterium (10<sup>3</sup> or 10<sup>5</sup> CFU/mL). Bacterization increased the expression of TOR in shoot and root apexes and promoted phosphorylation of S6K 3 days after transplant. The TOR inhibitor AZD-8055 (1 μM) inhibited plant growth and cell division in root meristems and in lateral root primordia, interfering with the phytostimulation by A. brasilense. In addition, the role of auxin produced by the bacterium to stimulate TOR expression was explored. Noteworthy, the A. brasilense mutant FAJ009, impaired in auxin production, was unable to elicit TOR signaling to the level observed for the wild-type strain, showing the importance of this phyhormone to stimulate TOR signaling. Together, our findings establish an important role of TOR signaling for the probiotic traits elicited by A. brasilense in A. thaliana.</div></front></TEI><pubmed><MedlineCitation Status="MEDLINE" Owner="NLM"><PMID Version="1">32081264</PMID><DateCompleted><Year>2020</Year><Month>10</Month><Day>26</Day></DateCompleted><DateRevised><Year>2020</Year><Month>10</Month><Day>26</Day></DateRevised><Article PubModel="Print-Electronic"><Journal><ISSN IssnType="Electronic">1873-2259</ISSN><JournalIssue CitedMedium="Internet"><Volume>293</Volume><PubDate><Year>2020</Year><Month>Apr</Month></PubDate></JournalIssue><Title>Plant science : an international journal of experimental plant biology</Title><ISOAbbreviation>Plant Sci</ISOAbbreviation></Journal><ArticleTitle>TARGET OF RAPAMYCIN signaling plays a role in Arabidopsis growth promotion by Azospirillum brasilense Sp245.</ArticleTitle><Pagination><MedlinePgn>110416</MedlinePgn></Pagination><ELocationID EIdType="pii" ValidYN="Y">S0168-9452(20)30018-2</ELocationID><ELocationID EIdType="doi" ValidYN="Y">10.1016/j.plantsci.2020.110416</ELocationID><Abstract><AbstractText>Azospirillum brasilense colonizes plant roots and improves productivity, but the molecular mechanisms behind its phytostimulation properties remain mostly unknown. Here, we uncover an important role of TARGET OF RAPAMYCIN (TOR) signaling on the response of Arabidopsis thaliana to A. brasilense Sp245. The effect of the bacterium on TOR expression was analyzed in the transgenic line TOR/tor-1, which carries a translational fusion with the GUS reporter protein, and the activity of TOR was assayed thought the phosphorylation of its downstream signaling target S6K protein. Besides, the role of TOR on plant growth in inoculated plants was assessed using the ATP-competitive inhibitor AZD-8055. A decrease in growth of the primary root correlates with an improved branching and absorptive capacity via lateral root and root hair proliferation 6 days after transplant to different concentrations of the bacterium (10<sup>3</sup> or 10<sup>5</sup> CFU/mL). Bacterization increased the expression of TOR in shoot and root apexes and promoted phosphorylation of S6K 3 days after transplant. The TOR inhibitor AZD-8055 (1 μM) inhibited plant growth and cell division in root meristems and in lateral root primordia, interfering with the phytostimulation by A. brasilense. In addition, the role of auxin produced by the bacterium to stimulate TOR expression was explored. Noteworthy, the A. brasilense mutant FAJ009, impaired in auxin production, was unable to elicit TOR signaling to the level observed for the wild-type strain, showing the importance of this phyhormone to stimulate TOR signaling. Together, our findings establish an important role of TOR signaling for the probiotic traits elicited by A. brasilense in A. thaliana.</AbstractText><CopyrightInformation>Copyright © 2020 Elsevier B.V. All rights reserved.</CopyrightInformation></Abstract><AuthorList CompleteYN="Y"><Author ValidYN="Y"><LastName>Méndez-Gómez</LastName><ForeName>Manuel</ForeName><Initials>M</Initials><AffiliationInfo><Affiliation>Instituto de Investigaciones Químico Biológicas, Universidad Michoacana de San Nicolás de Hidalgo, Ciudad Universitaria, Edif. A1´, Morelia, Michoacán CP 58040, Mexico.</Affiliation></AffiliationInfo></Author><Author ValidYN="Y"><LastName>Castro-Mercado</LastName><ForeName>Elda</ForeName><Initials>E</Initials><AffiliationInfo><Affiliation>Instituto de Investigaciones Químico Biológicas, Universidad Michoacana de San Nicolás de Hidalgo, Ciudad Universitaria, Edif. A1´, Morelia, Michoacán CP 58040, Mexico.</Affiliation></AffiliationInfo></Author><Author ValidYN="Y"><LastName>Peña-Uribe</LastName><ForeName>César Arturo</ForeName><Initials>CA</Initials><AffiliationInfo><Affiliation>Instituto de Investigaciones Químico Biológicas, Universidad Michoacana de San Nicolás de Hidalgo, Ciudad Universitaria, Edif. A1´, Morelia, Michoacán CP 58040, Mexico.</Affiliation></AffiliationInfo></Author><Author ValidYN="Y"><LastName>Reyes-de la Cruz</LastName><ForeName>Homero</ForeName><Initials>H</Initials><AffiliationInfo><Affiliation>Instituto de Investigaciones Químico Biológicas, Universidad Michoacana de San Nicolás de Hidalgo, Ciudad Universitaria, Edif. A1´, Morelia, Michoacán CP 58040, Mexico.</Affiliation></AffiliationInfo></Author><Author ValidYN="Y"><LastName>López-Bucio</LastName><ForeName>José</ForeName><Initials>J</Initials><AffiliationInfo><Affiliation>Instituto de Investigaciones Químico Biológicas, Universidad Michoacana de San Nicolás de Hidalgo, Ciudad Universitaria, Edif. A1´, Morelia, Michoacán CP 58040, Mexico.</Affiliation></AffiliationInfo></Author><Author ValidYN="Y"><LastName>García-Pineda</LastName><ForeName>Ernesto</ForeName><Initials>E</Initials><AffiliationInfo><Affiliation>Instituto de Investigaciones Químico Biológicas, Universidad Michoacana de San Nicolás de Hidalgo, Ciudad Universitaria, Edif. A1´, Morelia, Michoacán CP 58040, Mexico. Electronic address: egpineda@umich.mx.</Affiliation></AffiliationInfo></Author></AuthorList><Language>eng</Language><PublicationTypeList><PublicationType UI="D016428">Journal Article</PublicationType></PublicationTypeList><ArticleDate DateType="Electronic"><Year>2020</Year><Month>01</Month><Day>21</Day></ArticleDate></Article><MedlineJournalInfo><Country>Ireland</Country><MedlineTA>Plant Sci</MedlineTA><NlmUniqueID>9882015</NlmUniqueID><ISSNLinking>0168-9452</ISSNLinking></MedlineJournalInfo><ChemicalList><Chemical><RegistryNumber>0</RegistryNumber><NameOfSubstance UI="D029681">Arabidopsis Proteins</NameOfSubstance></Chemical><Chemical><RegistryNumber>0</RegistryNumber><NameOfSubstance UI="D007210">Indoleacetic Acids</NameOfSubstance></Chemical><Chemical><RegistryNumber>0</RegistryNumber><NameOfSubstance UI="D011804">Quinolines</NameOfSubstance></Chemical><Chemical><RegistryNumber>0</RegistryNumber><NameOfSubstance UI="D014230">Triazoles</NameOfSubstance></Chemical><Chemical><RegistryNumber>EC 2.7.1.137</RegistryNumber><NameOfSubstance UI="C512171">TOR protein, Arabidopsis</NameOfSubstance></Chemical></ChemicalList><CitationSubset>IM</CitationSubset><MeshHeadingList><MeshHeading><DescriptorName UI="D017360" MajorTopicYN="N">Arabidopsis</DescriptorName><QualifierName UI="Q000254" MajorTopicYN="Y">growth & development</QualifierName><QualifierName UI="Q000378" MajorTopicYN="Y">metabolism</QualifierName></MeshHeading><MeshHeading><DescriptorName UI="D029681" MajorTopicYN="N">Arabidopsis Proteins</DescriptorName><QualifierName UI="Q000187" MajorTopicYN="N">drug effects</QualifierName><QualifierName UI="Q000378" MajorTopicYN="Y">metabolism</QualifierName></MeshHeading><MeshHeading><DescriptorName UI="D015806" MajorTopicYN="N">Azospirillum brasilense</DescriptorName><QualifierName UI="Q000502" MajorTopicYN="Y">physiology</QualifierName></MeshHeading><MeshHeading><DescriptorName UI="D007210" MajorTopicYN="N">Indoleacetic Acids</DescriptorName><QualifierName UI="Q000378" MajorTopicYN="N">metabolism</QualifierName></MeshHeading><MeshHeading><DescriptorName UI="D018519" MajorTopicYN="N">Meristem</DescriptorName><QualifierName UI="Q000378" MajorTopicYN="N">metabolism</QualifierName></MeshHeading><MeshHeading><DescriptorName UI="D019869" MajorTopicYN="N">Phosphatidylinositol 3-Kinases</DescriptorName><QualifierName UI="Q000187" MajorTopicYN="N">drug effects</QualifierName><QualifierName UI="Q000378" MajorTopicYN="Y">metabolism</QualifierName></MeshHeading><MeshHeading><DescriptorName UI="D010766" MajorTopicYN="N">Phosphorylation</DescriptorName></MeshHeading><MeshHeading><DescriptorName UI="D063245" MajorTopicYN="N">Plant Development</DescriptorName></MeshHeading><MeshHeading><DescriptorName UI="D018517" MajorTopicYN="N">Plant Roots</DescriptorName><QualifierName UI="Q000378" MajorTopicYN="N">metabolism</QualifierName><QualifierName UI="Q000382" MajorTopicYN="N">microbiology</QualifierName></MeshHeading><MeshHeading><DescriptorName UI="D011804" MajorTopicYN="N">Quinolines</DescriptorName><QualifierName UI="Q000037" MajorTopicYN="N">antagonists & inhibitors</QualifierName></MeshHeading><MeshHeading><DescriptorName UI="D012230" MajorTopicYN="N">Rhizobiaceae</DescriptorName></MeshHeading><MeshHeading><DescriptorName UI="D015398" MajorTopicYN="N">Signal Transduction</DescriptorName><QualifierName UI="Q000502" MajorTopicYN="Y">physiology</QualifierName></MeshHeading><MeshHeading><DescriptorName UI="D014230" MajorTopicYN="N">Triazoles</DescriptorName><QualifierName UI="Q000037" MajorTopicYN="N">antagonists & inhibitors</QualifierName></MeshHeading></MeshHeadingList><KeywordList Owner="NOTNLM"><Keyword MajorTopicYN="N">Arabidopsis thaliana</Keyword><Keyword MajorTopicYN="N">Auxin</Keyword><Keyword MajorTopicYN="N">Azospirillum brasilense</Keyword><Keyword MajorTopicYN="N">Plant growth</Keyword><Keyword MajorTopicYN="N">Rhizobacteria</Keyword><Keyword MajorTopicYN="N">Target of rapamycin</Keyword></KeywordList><CoiStatement>Declaration of Competing Interest The authors declare that they have no conflict of interest.</CoiStatement></MedlineCitation><PubmedData><History><PubMedPubDate PubStatus="received"><Year>2019</Year><Month>08</Month><Day>06</Day></PubMedPubDate><PubMedPubDate PubStatus="revised"><Year>2019</Year><Month>12</Month><Day>16</Day></PubMedPubDate><PubMedPubDate PubStatus="accepted"><Year>2019</Year><Month>12</Month><Day>19</Day></PubMedPubDate><PubMedPubDate PubStatus="entrez"><Year>2020</Year><Month>2</Month><Day>22</Day><Hour>6</Hour><Minute>0</Minute></PubMedPubDate><PubMedPubDate PubStatus="pubmed"><Year>2020</Year><Month>2</Month><Day>23</Day><Hour>6</Hour><Minute>0</Minute></PubMedPubDate><PubMedPubDate PubStatus="medline"><Year>2020</Year><Month>10</Month><Day>27</Day><Hour>6</Hour><Minute>0</Minute></PubMedPubDate></History><PublicationStatus>ppublish</PublicationStatus><ArticleIdList><ArticleId IdType="pubmed">32081264</ArticleId><ArticleId IdType="pii">S0168-9452(20)30018-2</ArticleId><ArticleId IdType="doi">10.1016/j.plantsci.2020.110416</ArticleId></ArticleIdList></PubmedData></pubmed><affiliations><list><country><li>Mexique</li></country></list><tree><country name="Mexique"><noRegion><name sortKey="Mendez G Mez, Manuel" sort="Mendez G Mez, Manuel" uniqKey="Mendez G Mez M" first="Manuel" last="Méndez-G Mez">Manuel Méndez-G Mez</name></noRegion><name sortKey="Castro Mercado, Elda" sort="Castro Mercado, Elda" uniqKey="Castro Mercado E" first="Elda" last="Castro-Mercado">Elda Castro-Mercado</name><name sortKey="Garcia Pineda, Ernesto" sort="Garcia Pineda, Ernesto" uniqKey="Garcia Pineda E" first="Ernesto" last="García-Pineda">Ernesto García-Pineda</name><name sortKey="L Pez Bucio, Jose" sort="L Pez Bucio, Jose" uniqKey="L Pez Bucio J" first="José" last="L Pez-Bucio">José L Pez-Bucio</name><name sortKey="Pe A Uribe, Cesar Arturo" sort="Pe A Uribe, Cesar Arturo" uniqKey="Pe A Uribe C" first="César Arturo" last="Pe A-Uribe">César Arturo Pe A-Uribe</name><name sortKey="Reyes De La Cruz, Homero" sort="Reyes De La Cruz, Homero" uniqKey="Reyes De La Cruz H" first="Homero" last="Reyes-De La Cruz">Homero Reyes-De La Cruz</name></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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|texte= TARGET OF RAPAMYCIN signaling plays a role in Arabidopsis growth promotion by Azospirillum brasilense Sp245.
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