TDIF regulates auxin accumulation and modulates auxin sensitivity to enhance both adventitious root and lateral root formation in poplar trees.
Identifieur interne : 000092 ( Main/Exploration ); précédent : 000091; suivant : 000093TDIF regulates auxin accumulation and modulates auxin sensitivity to enhance both adventitious root and lateral root formation in poplar trees.
Auteurs : Jing Yue [République populaire de Chine] ; Heyu Yang [République populaire de Chine] ; Shaohui Yang [République populaire de Chine] ; Jiehua Wang [République populaire de Chine]Source :
- Tree physiology [ 1758-4469 ] ; 2020.
Abstract
Of six TRACHEARY ELEMENT DIFFERENTIATION INHIBITORY FACTOR (TDIF)-encoding genes in poplar, PtTDIF1 is predominantly expressed in adventitious roots (ARs), and the other five PtTDIFs are preferentially expressed in lateral roots (LRs). Upon auxin application, expression of all PtTDIFs declined in ARs but transiently increased in LRs. Both exogenous TDIF peptides and overexpression of PtTDIFs in poplar positively regulated the initiation and elongation of LRs, and overexpression of PtTDIFs also increased the number of ARs. As visualized by the auxin-responsive marker DR5:GUS, TDIF had differential impacts on the auxin signaling activity in ARs and LRs, which was corroborated by the free indole-3-acetic acid (IAA) measurements in them. Shoot tips of PtTDIF2- and PtTDIFL2-overexpressing (together as PtTDIFsOE) trees revealed an enhanced IAA biosynthetic capacity, and removal of the aerial tissues dramatically diminished the root phenotypes of micro-propagated PtTDIFsOE trees. Furthermore, PtTDIFsOE poplars displayed an increased sensitivity for exogenous IAA, and N-1-naphthylphthalamic acid (NPA) completely blocked the TDIF-induced AR and LR formation. In PtTDIFsOE roots, several auxin-related LR initiation markers such as GATA23, LBD16 and LBD29 were transcriptionally upregulated, further supporting that TDIF regulates LR organogenesis by strengthening the spatiotemporal auxin cues and that dynamic interplays between hormones govern root branching and developmental plasticity in tree species.
DOI: 10.1093/treephys/tpaa077
PubMed: 32598454
Affiliations:
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Engineering, Tianjin University, Tianjin 300072, China.</nlm:affiliation><country xml:lang="fr">République populaire de Chine</country><wicri:regionArea>School of Environmental Science and Engineering, Tianjin University, Tianjin 300072</wicri:regionArea><placeName><settlement type="city">Tianjin</settlement></placeName></affiliation></author><author><name sortKey="Yang, Shaohui" sort="Yang, Shaohui" uniqKey="Yang S" first="Shaohui" last="Yang">Shaohui Yang</name><affiliation wicri:level="1"><nlm:affiliation>School of Environmental Science and Engineering, Tianjin University, Tianjin 300072, China.</nlm:affiliation><country xml:lang="fr">République populaire de Chine</country><wicri:regionArea>School of Environmental Science and Engineering, Tianjin University, Tianjin 300072</wicri:regionArea><placeName><settlement type="city">Tianjin</settlement></placeName></affiliation></author><author><name sortKey="Wang, Jiehua" sort="Wang, Jiehua" uniqKey="Wang J" first="Jiehua" last="Wang">Jiehua Wang</name><affiliation wicri:level="1"><nlm:affiliation>School of Environmental Science and Engineering, Tianjin University, Tianjin 300072, China.</nlm:affiliation><country xml:lang="fr">République populaire de Chine</country><wicri:regionArea>School of Environmental Science and Engineering, Tianjin University, Tianjin 300072</wicri:regionArea><placeName><settlement type="city">Tianjin</settlement></placeName></affiliation></author></analytic><series><title level="j">Tree physiology</title><idno type="eISSN">1758-4469</idno><imprint><date when="2020" type="published">2020</date></imprint></series></biblStruct></sourceDesc></fileDesc><profileDesc><textClass></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">Of six TRACHEARY ELEMENT DIFFERENTIATION INHIBITORY FACTOR (TDIF)-encoding genes in poplar, PtTDIF1 is predominantly expressed in adventitious roots (ARs), and the other five PtTDIFs are preferentially expressed in lateral roots (LRs). Upon auxin application, expression of all PtTDIFs declined in ARs but transiently increased in LRs. Both exogenous TDIF peptides and overexpression of PtTDIFs in poplar positively regulated the initiation and elongation of LRs, and overexpression of PtTDIFs also increased the number of ARs. As visualized by the auxin-responsive marker DR5:GUS, TDIF had differential impacts on the auxin signaling activity in ARs and LRs, which was corroborated by the free indole-3-acetic acid (IAA) measurements in them. Shoot tips of PtTDIF2- and PtTDIFL2-overexpressing (together as PtTDIFsOE) trees revealed an enhanced IAA biosynthetic capacity, and removal of the aerial tissues dramatically diminished the root phenotypes of micro-propagated PtTDIFsOE trees. Furthermore, PtTDIFsOE poplars displayed an increased sensitivity for exogenous IAA, and N-1-naphthylphthalamic acid (NPA) completely blocked the TDIF-induced AR and LR formation. In PtTDIFsOE roots, several auxin-related LR initiation markers such as GATA23, LBD16 and LBD29 were transcriptionally upregulated, further supporting that TDIF regulates LR organogenesis by strengthening the spatiotemporal auxin cues and that dynamic interplays between hormones govern root branching and developmental plasticity in tree species.</div></front></TEI><pubmed><MedlineCitation Status="In-Data-Review" Owner="NLM"><PMID Version="1">32598454</PMID><DateRevised><Year>2020</Year><Month>11</Month><Day>10</Day></DateRevised><Article PubModel="Print"><Journal><ISSN IssnType="Electronic">1758-4469</ISSN><JournalIssue CitedMedium="Internet"><Volume>40</Volume><Issue>11</Issue><PubDate><Year>2020</Year><Month>Oct</Month><Day>29</Day></PubDate></JournalIssue><Title>Tree physiology</Title><ISOAbbreviation>Tree Physiol</ISOAbbreviation></Journal><ArticleTitle>TDIF regulates auxin accumulation and modulates auxin sensitivity to enhance both adventitious root and lateral root formation in poplar trees.</ArticleTitle><Pagination><MedlinePgn>1534-1547</MedlinePgn></Pagination><ELocationID EIdType="doi" ValidYN="Y">10.1093/treephys/tpaa077</ELocationID><Abstract><AbstractText>Of six TRACHEARY ELEMENT DIFFERENTIATION INHIBITORY FACTOR (TDIF)-encoding genes in poplar, PtTDIF1 is predominantly expressed in adventitious roots (ARs), and the other five PtTDIFs are preferentially expressed in lateral roots (LRs). Upon auxin application, expression of all PtTDIFs declined in ARs but transiently increased in LRs. Both exogenous TDIF peptides and overexpression of PtTDIFs in poplar positively regulated the initiation and elongation of LRs, and overexpression of PtTDIFs also increased the number of ARs. As visualized by the auxin-responsive marker DR5:GUS, TDIF had differential impacts on the auxin signaling activity in ARs and LRs, which was corroborated by the free indole-3-acetic acid (IAA) measurements in them. Shoot tips of PtTDIF2- and PtTDIFL2-overexpressing (together as PtTDIFsOE) trees revealed an enhanced IAA biosynthetic capacity, and removal of the aerial tissues dramatically diminished the root phenotypes of micro-propagated PtTDIFsOE trees. Furthermore, PtTDIFsOE poplars displayed an increased sensitivity for exogenous IAA, and N-1-naphthylphthalamic acid (NPA) completely blocked the TDIF-induced AR and LR formation. In PtTDIFsOE roots, several auxin-related LR initiation markers such as GATA23, LBD16 and LBD29 were transcriptionally upregulated, further supporting that TDIF regulates LR organogenesis by strengthening the spatiotemporal auxin cues and that dynamic interplays between hormones govern root branching and developmental plasticity in tree species.</AbstractText><CopyrightInformation>© The Author(s) 2020. Published by Oxford University Press. All rights reserved. For permissions, please e-mail: journals.permission@oup.com.</CopyrightInformation></Abstract><AuthorList CompleteYN="Y"><Author ValidYN="Y"><LastName>Yue</LastName><ForeName>Jing</ForeName><Initials>J</Initials><AffiliationInfo><Affiliation>School of Environmental Science and Engineering, Tianjin University, Tianjin 300072, China.</Affiliation></AffiliationInfo></Author><Author ValidYN="Y"><LastName>Yang</LastName><ForeName>Heyu</ForeName><Initials>H</Initials><AffiliationInfo><Affiliation>School of Environmental Science and Engineering, Tianjin University, Tianjin 300072, China.</Affiliation></AffiliationInfo></Author><Author ValidYN="Y"><LastName>Yang</LastName><ForeName>Shaohui</ForeName><Initials>S</Initials><AffiliationInfo><Affiliation>School of Environmental Science and Engineering, Tianjin University, Tianjin 300072, China.</Affiliation></AffiliationInfo></Author><Author ValidYN="Y"><LastName>Wang</LastName><ForeName>Jiehua</ForeName><Initials>J</Initials><AffiliationInfo><Affiliation>School of Environmental Science and Engineering, Tianjin University, Tianjin 300072, China.</Affiliation></AffiliationInfo></Author></AuthorList><Language>eng</Language><PublicationTypeList><PublicationType UI="D016428">Journal Article</PublicationType></PublicationTypeList></Article><MedlineJournalInfo><Country>Canada</Country><MedlineTA>Tree Physiol</MedlineTA><NlmUniqueID>100955338</NlmUniqueID><ISSNLinking>0829-318X</ISSNLinking></MedlineJournalInfo><CitationSubset>IM</CitationSubset><KeywordList Owner="NOTNLM"><Keyword MajorTopicYN="N">IAA signaling</Keyword><Keyword MajorTopicYN="N">TDIF</Keyword><Keyword MajorTopicYN="N">adventitious root</Keyword><Keyword MajorTopicYN="N">auxin sensitivity</Keyword><Keyword MajorTopicYN="N">lateral root</Keyword><Keyword MajorTopicYN="N">poplar</Keyword></KeywordList></MedlineCitation><PubmedData><History><PubMedPubDate PubStatus="received"><Year>2020</Year><Month>02</Month><Day>20</Day></PubMedPubDate><PubMedPubDate PubStatus="revised"><Year>2020</Year><Month>05</Month><Day>11</Day></PubMedPubDate><PubMedPubDate PubStatus="accepted"><Year>2020</Year><Month>06</Month><Day>16</Day></PubMedPubDate><PubMedPubDate PubStatus="pubmed"><Year>2020</Year><Month>7</Month><Day>1</Day><Hour>6</Hour><Minute>0</Minute></PubMedPubDate><PubMedPubDate PubStatus="medline"><Year>2020</Year><Month>7</Month><Day>1</Day><Hour>6</Hour><Minute>0</Minute></PubMedPubDate><PubMedPubDate PubStatus="entrez"><Year>2020</Year><Month>6</Month><Day>30</Day><Hour>6</Hour><Minute>0</Minute></PubMedPubDate></History><PublicationStatus>ppublish</PublicationStatus><ArticleIdList><ArticleId IdType="pubmed">32598454</ArticleId><ArticleId IdType="pii">5864795</ArticleId><ArticleId IdType="doi">10.1093/treephys/tpaa077</ArticleId></ArticleIdList></PubmedData></pubmed><affiliations><list><country><li>République populaire de Chine</li></country><settlement><li>Tianjin</li></settlement></list><tree><country name="République populaire de Chine"><noRegion><name sortKey="Yue, Jing" sort="Yue, Jing" uniqKey="Yue J" first="Jing" last="Yue">Jing Yue</name></noRegion><name sortKey="Wang, Jiehua" sort="Wang, Jiehua" uniqKey="Wang J" first="Jiehua" last="Wang">Jiehua Wang</name><name sortKey="Yang, Heyu" sort="Yang, Heyu" uniqKey="Yang H" first="Heyu" last="Yang">Heyu Yang</name><name sortKey="Yang, Shaohui" sort="Yang, Shaohui" uniqKey="Yang S" first="Shaohui" last="Yang">Shaohui Yang</name></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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