GABA negatively regulates adventitious root development in poplar.
Identifieur interne : 000386 ( Main/Exploration ); précédent : 000385; suivant : 000387GABA negatively regulates adventitious root development in poplar.
Auteurs : Tiantian Xie [République populaire de Chine] ; Jing Ji [République populaire de Chine] ; Wei Chen [République populaire de Chine] ; Jianyun Yue [République populaire de Chine] ; Changjian Du [République populaire de Chine] ; Jiacheng Sun [République populaire de Chine] ; Lanzhen Chen [République populaire de Chine] ; Zeping Jiang [République populaire de Chine] ; Shengqing Shi [République populaire de Chine]Source :
- Journal of experimental botany [ 1460-2431 ] ; 2020.
Abstract
γ-Aminobutyric acid (GABA) influences plant growth, but little is known about how this metabolite regulates adventitious root (AR) development. Here, we investigate the effects of GABA on ARs using poplar lines overexpressing glutamate decarboxilase 2 (GAD2) and by treating poplar stem cuttings with exogenous GABA or vigabatrin (VGB; a specific GABA transaminase inhibitor). Endogenous GABA accumulation not only inhibited AR growth, but it also suppressed or delayed AR formation. Anatomical observations revealed that the GABA and VGB treatments resulted in a 1 d delay in the formation of AR primordia and the appearance of ARs. This delay coincided with changes in primary metabolism, including transient increases in hexose and amino acid levels. GABA-dependent changes in the expression of genes related to hormone synthesis and signalling, as well as analysis of hormone levels revealed that ethylene-dependent pathways were decreased at the earliest stage of AR formation. In contrast, auxin and abscisic acid were increased at 1-5 d as well as GA4 over a 5 d period of AR formation. These results demonstrate that GABA plays a crucial role in AR development. Evidence is presented demonstrating that GABA can interact with hormone-related pathways as well as carbon/nitrogen metabolism. These findings also elucidate the functions of GABA in plant development.
DOI: 10.1093/jxb/erz520
PubMed: 31740934
Affiliations:
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Academy of Forestry, Beijing</wicri:regionArea><placeName><settlement type="city">Pékin</settlement></placeName></affiliation></author><author><name sortKey="Chen, Wei" sort="Chen, Wei" uniqKey="Chen W" first="Wei" last="Chen">Wei Chen</name><affiliation wicri:level="3"><nlm:affiliation>State Key Laboratory of Tree Genetics and Breeding, Key Laboratory of Tree Breeding and Cultivation of State Forestry and Grassland Administration, Research Institute of Forestry Research, Chinese Academy of Forestry, Beijing, China.</nlm:affiliation><country xml:lang="fr">République populaire de Chine</country><wicri:regionArea>State Key Laboratory of Tree Genetics and Breeding, Key Laboratory of Tree Breeding and Cultivation of State Forestry and Grassland Administration, Research Institute of Forestry Research, Chinese Academy of Forestry, Beijing</wicri:regionArea><placeName><settlement type="city">Pékin</settlement></placeName></affiliation></author><author><name sortKey="Yue, Jianyun" sort="Yue, Jianyun" uniqKey="Yue J" first="Jianyun" last="Yue">Jianyun Yue</name><affiliation wicri:level="3"><nlm:affiliation>State Key Laboratory of Tree Genetics and Breeding, Key Laboratory of Tree Breeding and Cultivation of State Forestry and Grassland Administration, Research Institute of Forestry Research, Chinese Academy of Forestry, Beijing, China.</nlm:affiliation><country xml:lang="fr">République populaire de Chine</country><wicri:regionArea>State Key Laboratory of Tree Genetics and Breeding, Key Laboratory of Tree Breeding and Cultivation of State Forestry and Grassland Administration, Research Institute of Forestry Research, Chinese Academy of Forestry, Beijing</wicri:regionArea><placeName><settlement type="city">Pékin</settlement></placeName></affiliation></author><author><name sortKey="Du, Changjian" sort="Du, Changjian" uniqKey="Du C" first="Changjian" last="Du">Changjian Du</name><affiliation wicri:level="3"><nlm:affiliation>State Key Laboratory of Tree Genetics and Breeding, Key Laboratory of Tree Breeding and Cultivation of State Forestry and Grassland Administration, Research Institute of Forestry Research, Chinese Academy of Forestry, Beijing, China.</nlm:affiliation><country xml:lang="fr">République populaire de Chine</country><wicri:regionArea>State Key Laboratory of Tree Genetics and Breeding, Key Laboratory of Tree Breeding and Cultivation of State Forestry and Grassland Administration, Research Institute of Forestry Research, Chinese Academy of Forestry, Beijing</wicri:regionArea><placeName><settlement type="city">Pékin</settlement></placeName></affiliation></author><author><name sortKey="Sun, Jiacheng" sort="Sun, Jiacheng" uniqKey="Sun J" first="Jiacheng" last="Sun">Jiacheng Sun</name><affiliation wicri:level="3"><nlm:affiliation>State Key Laboratory of Tree Genetics and Breeding, Key Laboratory of Tree Breeding and Cultivation of State Forestry and Grassland Administration, Research Institute of Forestry Research, Chinese Academy of Forestry, Beijing, China.</nlm:affiliation><country xml:lang="fr">République populaire de Chine</country><wicri:regionArea>State Key Laboratory of Tree Genetics and Breeding, Key Laboratory of Tree Breeding and Cultivation of State Forestry and Grassland Administration, Research Institute of Forestry Research, Chinese Academy of Forestry, Beijing</wicri:regionArea><placeName><settlement type="city">Pékin</settlement></placeName></affiliation></author><author><name sortKey="Chen, Lanzhen" sort="Chen, Lanzhen" uniqKey="Chen L" first="Lanzhen" last="Chen">Lanzhen Chen</name><affiliation wicri:level="3"><nlm:affiliation>Institute of Apicultural Research, Chinese Academy of Agricultural Sciences, Beijing, China.</nlm:affiliation><country xml:lang="fr">République populaire de Chine</country><wicri:regionArea>Institute of Apicultural Research, Chinese Academy of Agricultural Sciences, Beijing</wicri:regionArea><placeName><settlement type="city">Pékin</settlement></placeName></affiliation><affiliation wicri:level="3"><nlm:affiliation>Risk Assessment Laboratory for Bee Products, Quality and Safety of Ministry of Agriculture, Beijing, China.</nlm:affiliation><country xml:lang="fr">République populaire de Chine</country><wicri:regionArea>Risk Assessment Laboratory for Bee Products, Quality and Safety of Ministry of Agriculture, Beijing</wicri:regionArea><placeName><settlement type="city">Pékin</settlement></placeName></affiliation></author><author><name sortKey="Jiang, Zeping" sort="Jiang, Zeping" uniqKey="Jiang Z" first="Zeping" last="Jiang">Zeping Jiang</name><affiliation wicri:level="3"><nlm:affiliation>Research Institute of Forest Ecology, Environment and Protection, Key Laboratory of Forest Ecology and Environment of State Forestry and Grassland Administration, Chinese Academy of Forestry, Beijing, China.</nlm:affiliation><country xml:lang="fr">République populaire de Chine</country><wicri:regionArea>Research Institute of Forest Ecology, Environment and Protection, Key Laboratory of Forest Ecology and Environment of State Forestry and Grassland Administration, Chinese Academy of Forestry, Beijing</wicri:regionArea><placeName><settlement type="city">Pékin</settlement></placeName></affiliation></author><author><name sortKey="Shi, Shengqing" sort="Shi, Shengqing" uniqKey="Shi S" first="Shengqing" last="Shi">Shengqing Shi</name><affiliation wicri:level="3"><nlm:affiliation>State Key Laboratory of Tree Genetics and Breeding, Key Laboratory of Tree Breeding and Cultivation of State Forestry and Grassland Administration, Research Institute of Forestry Research, Chinese Academy of Forestry, Beijing, China.</nlm:affiliation><country xml:lang="fr">République populaire de Chine</country><wicri:regionArea>State Key Laboratory of Tree Genetics and Breeding, Key Laboratory of Tree Breeding and Cultivation of State Forestry and Grassland Administration, Research Institute of Forestry Research, Chinese Academy of Forestry, Beijing</wicri:regionArea><placeName><settlement type="city">Pékin</settlement></placeName></affiliation></author></analytic><series><title level="j">Journal of experimental botany</title><idno type="eISSN">1460-2431</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">γ-Aminobutyric acid (GABA) influences plant growth, but little is known about how this metabolite regulates adventitious root (AR) development. Here, we investigate the effects of GABA on ARs using poplar lines overexpressing glutamate decarboxilase 2 (GAD2) and by treating poplar stem cuttings with exogenous GABA or vigabatrin (VGB; a specific GABA transaminase inhibitor). Endogenous GABA accumulation not only inhibited AR growth, but it also suppressed or delayed AR formation. Anatomical observations revealed that the GABA and VGB treatments resulted in a 1 d delay in the formation of AR primordia and the appearance of ARs. This delay coincided with changes in primary metabolism, including transient increases in hexose and amino acid levels. GABA-dependent changes in the expression of genes related to hormone synthesis and signalling, as well as analysis of hormone levels revealed that ethylene-dependent pathways were decreased at the earliest stage of AR formation. In contrast, auxin and abscisic acid were increased at 1-5 d as well as GA4 over a 5 d period of AR formation. These results demonstrate that GABA plays a crucial role in AR development. Evidence is presented demonstrating that GABA can interact with hormone-related pathways as well as carbon/nitrogen metabolism. These findings also elucidate the functions of GABA in plant development.</div></front></TEI><pubmed><MedlineCitation Status="In-Process" Owner="NLM"><PMID Version="1">31740934</PMID><DateRevised><Year>2020</Year><Month>09</Month><Day>10</Day></DateRevised><Article PubModel="Print"><Journal><ISSN IssnType="Electronic">1460-2431</ISSN><JournalIssue CitedMedium="Internet"><Volume>71</Volume><Issue>4</Issue><PubDate><Year>2020</Year><Month>02</Month><Day>19</Day></PubDate></JournalIssue><Title>Journal of experimental botany</Title><ISOAbbreviation>J Exp Bot</ISOAbbreviation></Journal><ArticleTitle>GABA negatively regulates adventitious root development in poplar.</ArticleTitle><Pagination><MedlinePgn>1459-1474</MedlinePgn></Pagination><ELocationID EIdType="doi" ValidYN="Y">10.1093/jxb/erz520</ELocationID><Abstract><AbstractText>γ-Aminobutyric acid (GABA) influences plant growth, but little is known about how this metabolite regulates adventitious root (AR) development. Here, we investigate the effects of GABA on ARs using poplar lines overexpressing glutamate decarboxilase 2 (GAD2) and by treating poplar stem cuttings with exogenous GABA or vigabatrin (VGB; a specific GABA transaminase inhibitor). Endogenous GABA accumulation not only inhibited AR growth, but it also suppressed or delayed AR formation. Anatomical observations revealed that the GABA and VGB treatments resulted in a 1 d delay in the formation of AR primordia and the appearance of ARs. This delay coincided with changes in primary metabolism, including transient increases in hexose and amino acid levels. GABA-dependent changes in the expression of genes related to hormone synthesis and signalling, as well as analysis of hormone levels revealed that ethylene-dependent pathways were decreased at the earliest stage of AR formation. In contrast, auxin and abscisic acid were increased at 1-5 d as well as GA4 over a 5 d period of AR formation. These results demonstrate that GABA plays a crucial role in AR development. Evidence is presented demonstrating that GABA can interact with hormone-related pathways as well as carbon/nitrogen metabolism. These findings also elucidate the functions of GABA in plant development.</AbstractText><CopyrightInformation>© The Author(s) 2019. Published by Oxford University Press on behalf of the Society for Experimental Biology. All rights reserved. For permissions, please email: journals.permissions@oup.com.</CopyrightInformation></Abstract><AuthorList CompleteYN="Y"><Author ValidYN="Y"><LastName>Xie</LastName><ForeName>Tiantian</ForeName><Initials>T</Initials><AffiliationInfo><Affiliation>State Key Laboratory of Tree Genetics and Breeding, Key Laboratory of Tree Breeding and Cultivation of State Forestry and Grassland Administration, Research Institute of Forestry Research, Chinese Academy of Forestry, Beijing, China.</Affiliation></AffiliationInfo></Author><Author ValidYN="Y"><LastName>Ji</LastName><ForeName>Jing</ForeName><Initials>J</Initials><AffiliationInfo><Affiliation>State Key Laboratory of Tree Genetics and Breeding, Key Laboratory of Tree Breeding and Cultivation of State Forestry and Grassland Administration, Research Institute of Forestry Research, Chinese Academy of Forestry, Beijing, China.</Affiliation></AffiliationInfo></Author><Author ValidYN="Y"><LastName>Chen</LastName><ForeName>Wei</ForeName><Initials>W</Initials><AffiliationInfo><Affiliation>State Key Laboratory of Tree Genetics and Breeding, Key Laboratory of Tree Breeding and Cultivation of State Forestry and Grassland Administration, Research Institute of Forestry Research, Chinese Academy of Forestry, Beijing, China.</Affiliation></AffiliationInfo></Author><Author ValidYN="Y"><LastName>Yue</LastName><ForeName>Jianyun</ForeName><Initials>J</Initials><AffiliationInfo><Affiliation>State Key Laboratory of Tree Genetics and Breeding, Key Laboratory of Tree Breeding and Cultivation of State Forestry and Grassland Administration, Research Institute of Forestry Research, Chinese Academy of Forestry, Beijing, China.</Affiliation></AffiliationInfo></Author><Author ValidYN="Y"><LastName>Du</LastName><ForeName>Changjian</ForeName><Initials>C</Initials><AffiliationInfo><Affiliation>State Key Laboratory of Tree Genetics and Breeding, Key Laboratory of Tree Breeding and Cultivation of State Forestry and Grassland Administration, Research Institute of Forestry Research, Chinese Academy of Forestry, Beijing, China.</Affiliation></AffiliationInfo></Author><Author ValidYN="Y"><LastName>Sun</LastName><ForeName>Jiacheng</ForeName><Initials>J</Initials><AffiliationInfo><Affiliation>State Key Laboratory of Tree Genetics and Breeding, Key Laboratory of Tree Breeding and Cultivation of State Forestry and Grassland Administration, Research Institute of Forestry Research, Chinese Academy of Forestry, Beijing, China.</Affiliation></AffiliationInfo></Author><Author ValidYN="Y"><LastName>Chen</LastName><ForeName>Lanzhen</ForeName><Initials>L</Initials><AffiliationInfo><Affiliation>Institute of Apicultural Research, Chinese Academy of Agricultural Sciences, Beijing, China.</Affiliation></AffiliationInfo><AffiliationInfo><Affiliation>Risk Assessment Laboratory for Bee Products, Quality and Safety of Ministry of Agriculture, Beijing, China.</Affiliation></AffiliationInfo></Author><Author ValidYN="Y"><LastName>Jiang</LastName><ForeName>Zeping</ForeName><Initials>Z</Initials><AffiliationInfo><Affiliation>Research Institute of Forest Ecology, Environment and Protection, Key Laboratory of Forest Ecology and Environment of State Forestry and Grassland Administration, Chinese Academy of Forestry, Beijing, China.</Affiliation></AffiliationInfo></Author><Author ValidYN="Y"><LastName>Shi</LastName><ForeName>Shengqing</ForeName><Initials>S</Initials><AffiliationInfo><Affiliation>State Key Laboratory of Tree Genetics and Breeding, Key Laboratory of Tree Breeding and Cultivation of State Forestry and Grassland Administration, Research Institute of Forestry Research, Chinese Academy of Forestry, Beijing, China.</Affiliation></AffiliationInfo></Author></AuthorList><Language>eng</Language><PublicationTypeList><PublicationType UI="D016428">Journal Article</PublicationType><PublicationType UI="D013485">Research Support, Non-U.S. Gov't</PublicationType></PublicationTypeList></Article><MedlineJournalInfo><Country>England</Country><MedlineTA>J Exp Bot</MedlineTA><NlmUniqueID>9882906</NlmUniqueID><ISSNLinking>0022-0957</ISSNLinking></MedlineJournalInfo><CitationSubset>IM</CitationSubset><KeywordList Owner="NOTNLM"><Keyword MajorTopicYN="Y">Adventitious root</Keyword><Keyword MajorTopicYN="Y">adventitious root primordia</Keyword><Keyword MajorTopicYN="Y">carbon and nitrogen metabolism</Keyword><Keyword MajorTopicYN="Y">hormone</Keyword><Keyword MajorTopicYN="Y">poplar</Keyword><Keyword MajorTopicYN="Y">γ-aminobutyric acid</Keyword></KeywordList></MedlineCitation><PubmedData><History><PubMedPubDate PubStatus="received"><Year>2018</Year><Month>12</Month><Day>13</Day></PubMedPubDate><PubMedPubDate PubStatus="accepted"><Year>2019</Year><Month>11</Month><Day>18</Day></PubMedPubDate><PubMedPubDate PubStatus="pubmed"><Year>2019</Year><Month>11</Month><Day>20</Day><Hour>6</Hour><Minute>0</Minute></PubMedPubDate><PubMedPubDate PubStatus="medline"><Year>2019</Year><Month>11</Month><Day>20</Day><Hour>6</Hour><Minute>0</Minute></PubMedPubDate><PubMedPubDate PubStatus="entrez"><Year>2019</Year><Month>11</Month><Day>20</Day><Hour>6</Hour><Minute>0</Minute></PubMedPubDate></History><PublicationStatus>ppublish</PublicationStatus><ArticleIdList><ArticleId IdType="pubmed">31740934</ArticleId><ArticleId IdType="pii">5629146</ArticleId><ArticleId IdType="doi">10.1093/jxb/erz520</ArticleId></ArticleIdList></PubmedData></pubmed><affiliations><list><country><li>République populaire de Chine</li></country><settlement><li>Pékin</li></settlement></list><tree><country name="République populaire de Chine"><noRegion><name sortKey="Xie, Tiantian" sort="Xie, Tiantian" uniqKey="Xie T" first="Tiantian" last="Xie">Tiantian Xie</name></noRegion><name sortKey="Chen, Lanzhen" sort="Chen, Lanzhen" uniqKey="Chen L" first="Lanzhen" last="Chen">Lanzhen Chen</name><name sortKey="Chen, Lanzhen" sort="Chen, Lanzhen" uniqKey="Chen L" first="Lanzhen" last="Chen">Lanzhen Chen</name><name sortKey="Chen, Wei" sort="Chen, Wei" uniqKey="Chen W" first="Wei" last="Chen">Wei Chen</name><name sortKey="Du, Changjian" sort="Du, Changjian" uniqKey="Du C" first="Changjian" last="Du">Changjian Du</name><name sortKey="Ji, Jing" sort="Ji, Jing" uniqKey="Ji J" first="Jing" last="Ji">Jing Ji</name><name sortKey="Jiang, Zeping" sort="Jiang, Zeping" uniqKey="Jiang Z" first="Zeping" last="Jiang">Zeping Jiang</name><name sortKey="Shi, Shengqing" sort="Shi, Shengqing" uniqKey="Shi S" first="Shengqing" last="Shi">Shengqing Shi</name><name sortKey="Sun, Jiacheng" sort="Sun, Jiacheng" uniqKey="Sun J" first="Jiacheng" last="Sun">Jiacheng Sun</name><name sortKey="Yue, Jianyun" sort="Yue, Jianyun" uniqKey="Yue J" first="Jianyun" last="Yue">Jianyun Yue</name></country></tree></affiliations></record>Pour manipuler ce 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