Aspen phenylpropanoid genes' expression levels correlate with genets' tannin richness and vary both in responses to soil nitrogen and associations with phenolic profiles.
Identifieur interne : 001517 ( Main/Exploration ); précédent : 001516; suivant : 001518Aspen phenylpropanoid genes' expression levels correlate with genets' tannin richness and vary both in responses to soil nitrogen and associations with phenolic profiles.
Auteurs : Vicki H G. Decker [Suède] ; Franziska Bandau [Suède] ; Michael J. Gundale [Suède] ; Christopher T. Cole [États-Unis] ; Benedicte R. Albrectsen [Suède]Source :
- Tree physiology [ 1758-4469 ] ; 2017.
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Abstract
Condensed tannin (CT) contents of European aspen (Populus tremula L.) vary among genotypes, and increases in nitrogen (N) availability generally reduce plants' tannin production in favor of growth, through poorly understood mechanisms. We hypothesized that intrinsic tannin production rates may co-vary with gene expression responses to soil N and resource allocation within the phenylpropanoid pathway (PPP). Thus, we examined correlations between soil N levels and both expression patterns of eight PPP genes (measured by quantitative-reverse transcription PCR) and foliar phenolic compounds (measured by liquid chromatography-mass spectrometry) in young aspen genets with intrinsically extreme CT levels. Monitored phenolics included salicinoids, lignins, flavones, flavonols, CT precursors and CTs. The PPP genes were consistently expressed more strongly in high-CT trees. Low N supplements reduced expression of genes throughout the PPP in all genets, while high N doses restored expression of genes at the beginning and end of the pathway. These PPP changes were not reflected in pools of tannin precursors, but varying correlations between gene expression and foliar phenolic pools were detected in young and mature leaves, suggesting that processes linking gene expression and the resulting phenolics vary spatially and temporally. Precursor fluxes suggested that CT-related metabolic rate or sink controls are linked to intrinsic carbon allocation strategies associated with N responses. Overall, we found more negative correlations (indicative of allocation trade-offs) between PPP gene expression and phenolic products following N additions in low-CT plants than in high-CT plants. The tannin-related expression dynamics suggest that, in addition to defense, relative tannin levels may also be indicative of intraspecific variations in the way aspen genets respond to soil fertility.
DOI: 10.1093/treephys/tpw118
PubMed: 27986954
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Gundale</name><affiliation wicri:level="1"><nlm:affiliation>Department of Forest Ecology and Management, Swedish University of Agricultural Sciences, UmeåSE 90183, Sweden.</nlm:affiliation><country xml:lang="fr">Suède</country><wicri:regionArea>Department of Forest Ecology and Management, Swedish University of Agricultural Sciences, UmeåSE 90183</wicri:regionArea><wicri:noRegion>UmeåSE 90183</wicri:noRegion></affiliation></author><author><name sortKey="Cole, Christopher T" sort="Cole, Christopher T" uniqKey="Cole C" first="Christopher T" last="Cole">Christopher T. 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Albrectsen</name><affiliation wicri:level="1"><nlm:affiliation>Department of Plant Physiology, Umeå Plant Science Centre, Umeå University, UmeåSE 90187, Sweden.</nlm:affiliation><country xml:lang="fr">Suède</country><wicri:regionArea>Department of Plant Physiology, Umeå Plant Science Centre, Umeå University, UmeåSE 90187</wicri:regionArea><wicri:noRegion>UmeåSE 90187</wicri:noRegion></affiliation></author></analytic><series><title level="j">Tree physiology</title><idno type="eISSN">1758-4469</idno><imprint><date when="2017" type="published">2017</date></imprint></series></biblStruct></sourceDesc></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Gene Expression Regulation, Plant (MeSH)</term><term>Genotype (MeSH)</term><term>Nitrogen (metabolism)</term><term>Populus (chemistry)</term><term>Populus (genetics)</term><term>Propanols (metabolism)</term><term>Soil (chemistry)</term><term>Tannins (genetics)</term><term>Tannins (metabolism)</term></keywords><keywords scheme="KwdFr" xml:lang="fr"><term>Azote (métabolisme)</term><term>Génotype (MeSH)</term><term>Populus (composition chimique)</term><term>Populus (génétique)</term><term>Propanols (métabolisme)</term><term>Régulation de l'expression des gènes végétaux (MeSH)</term><term>Sol (composition chimique)</term><term>Tanins (génétique)</term><term>Tanins (métabolisme)</term></keywords><keywords scheme="MESH" type="chemical" qualifier="chemistry" xml:lang="en"><term>Soil</term></keywords><keywords scheme="MESH" type="chemical" qualifier="genetics" xml:lang="en"><term>Tannins</term></keywords><keywords scheme="MESH" type="chemical" qualifier="metabolism" xml:lang="en"><term>Nitrogen</term><term>Propanols</term><term>Tannins</term></keywords><keywords scheme="MESH" qualifier="chemistry" xml:lang="en"><term>Populus</term></keywords><keywords scheme="MESH" qualifier="composition chimique" xml:lang="fr"><term>Populus</term><term>Sol</term></keywords><keywords scheme="MESH" qualifier="genetics" xml:lang="en"><term>Populus</term></keywords><keywords scheme="MESH" qualifier="génétique" xml:lang="fr"><term>Populus</term><term>Tanins</term></keywords><keywords scheme="MESH" qualifier="métabolisme" xml:lang="fr"><term>Azote</term><term>Propanols</term><term>Tanins</term></keywords><keywords scheme="MESH" xml:lang="en"><term>Gene Expression Regulation, Plant</term><term>Genotype</term></keywords><keywords scheme="MESH" xml:lang="fr"><term>Génotype</term><term>Régulation de l'expression des gènes végétaux</term></keywords></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">Condensed tannin (CT) contents of European aspen (Populus tremula L.) vary among genotypes, and increases in nitrogen (N) availability generally reduce plants' tannin production in favor of growth, through poorly understood mechanisms. We hypothesized that intrinsic tannin production rates may co-vary with gene expression responses to soil N and resource allocation within the phenylpropanoid pathway (PPP). Thus, we examined correlations between soil N levels and both expression patterns of eight PPP genes (measured by quantitative-reverse transcription PCR) and foliar phenolic compounds (measured by liquid chromatography-mass spectrometry) in young aspen genets with intrinsically extreme CT levels. Monitored phenolics included salicinoids, lignins, flavones, flavonols, CT precursors and CTs. The PPP genes were consistently expressed more strongly in high-CT trees. Low N supplements reduced expression of genes throughout the PPP in all genets, while high N doses restored expression of genes at the beginning and end of the pathway. These PPP changes were not reflected in pools of tannin precursors, but varying correlations between gene expression and foliar phenolic pools were detected in young and mature leaves, suggesting that processes linking gene expression and the resulting phenolics vary spatially and temporally. Precursor fluxes suggested that CT-related metabolic rate or sink controls are linked to intrinsic carbon allocation strategies associated with N responses. Overall, we found more negative correlations (indicative of allocation trade-offs) between PPP gene expression and phenolic products following N additions in low-CT plants than in high-CT plants. The tannin-related expression dynamics suggest that, in addition to defense, relative tannin levels may also be indicative of intraspecific variations in the way aspen genets respond to soil fertility.</div></front></TEI><pubmed><MedlineCitation Status="MEDLINE" Owner="NLM"><PMID Version="1">27986954</PMID><DateCompleted><Year>2017</Year><Month>09</Month><Day>05</Day></DateCompleted><DateRevised><Year>2017</Year><Month>12</Month><Day>18</Day></DateRevised><Article PubModel="Print"><Journal><ISSN IssnType="Electronic">1758-4469</ISSN><JournalIssue CitedMedium="Internet"><Volume>37</Volume><Issue>2</Issue><PubDate><Year>2017</Year><Month>02</Month><Day>01</Day></PubDate></JournalIssue><Title>Tree physiology</Title><ISOAbbreviation>Tree Physiol</ISOAbbreviation></Journal><ArticleTitle>Aspen phenylpropanoid genes' expression levels correlate with genets' tannin richness and vary both in responses to soil nitrogen and associations with phenolic profiles.</ArticleTitle><Pagination><MedlinePgn>270-279</MedlinePgn></Pagination><ELocationID EIdType="doi" ValidYN="Y">10.1093/treephys/tpw118</ELocationID><Abstract><AbstractText>Condensed tannin (CT) contents of European aspen (Populus tremula L.) vary among genotypes, and increases in nitrogen (N) availability generally reduce plants' tannin production in favor of growth, through poorly understood mechanisms. We hypothesized that intrinsic tannin production rates may co-vary with gene expression responses to soil N and resource allocation within the phenylpropanoid pathway (PPP). Thus, we examined correlations between soil N levels and both expression patterns of eight PPP genes (measured by quantitative-reverse transcription PCR) and foliar phenolic compounds (measured by liquid chromatography-mass spectrometry) in young aspen genets with intrinsically extreme CT levels. Monitored phenolics included salicinoids, lignins, flavones, flavonols, CT precursors and CTs. The PPP genes were consistently expressed more strongly in high-CT trees. Low N supplements reduced expression of genes throughout the PPP in all genets, while high N doses restored expression of genes at the beginning and end of the pathway. These PPP changes were not reflected in pools of tannin precursors, but varying correlations between gene expression and foliar phenolic pools were detected in young and mature leaves, suggesting that processes linking gene expression and the resulting phenolics vary spatially and temporally. Precursor fluxes suggested that CT-related metabolic rate or sink controls are linked to intrinsic carbon allocation strategies associated with N responses. Overall, we found more negative correlations (indicative of allocation trade-offs) between PPP gene expression and phenolic products following N additions in low-CT plants than in high-CT plants. The tannin-related expression dynamics suggest that, in addition to defense, relative tannin levels may also be indicative of intraspecific variations in the way aspen genets respond to soil fertility.</AbstractText><CopyrightInformation>© The Author 2016. Published by Oxford University Press. All rights reserved. For Permissions, please e-mail: journals.permissions@oup.com.</CopyrightInformation></Abstract><AuthorList CompleteYN="Y"><Author ValidYN="Y"><LastName>Decker</LastName><ForeName>Vicki H G</ForeName><Initials>VH</Initials><AffiliationInfo><Affiliation>Department of Plant Physiology, Umeå Plant Science Centre, Umeå University, UmeåSE 90187, Sweden.</Affiliation></AffiliationInfo></Author><Author ValidYN="Y"><LastName>Bandau</LastName><ForeName>Franziska</ForeName><Initials>F</Initials><AffiliationInfo><Affiliation>Department of Plant Physiology, Umeå Plant Science Centre, Umeå University, UmeåSE 90187, Sweden.</Affiliation></AffiliationInfo></Author><Author ValidYN="Y"><LastName>Gundale</LastName><ForeName>Michael J</ForeName><Initials>MJ</Initials><AffiliationInfo><Affiliation>Department of Forest Ecology and Management, Swedish University of Agricultural Sciences, UmeåSE 90183, Sweden.</Affiliation></AffiliationInfo></Author><Author ValidYN="Y"><LastName>Cole</LastName><ForeName>Christopher T</ForeName><Initials>CT</Initials><AffiliationInfo><Affiliation>Division of Science and Mathematics, University of Minnesota, Morris, MN56267, USA.</Affiliation></AffiliationInfo></Author><Author ValidYN="Y"><LastName>Albrectsen</LastName><ForeName>Benedicte R</ForeName><Initials>BR</Initials><AffiliationInfo><Affiliation>Department of Plant Physiology, Umeå Plant Science Centre, Umeå University, UmeåSE 90187, Sweden.</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>Canada</Country><MedlineTA>Tree Physiol</MedlineTA><NlmUniqueID>100955338</NlmUniqueID><ISSNLinking>0829-318X</ISSNLinking></MedlineJournalInfo><ChemicalList><Chemical><RegistryNumber>0</RegistryNumber><NameOfSubstance UI="D020005">Propanols</NameOfSubstance></Chemical><Chemical><RegistryNumber>0</RegistryNumber><NameOfSubstance UI="D012987">Soil</NameOfSubstance></Chemical><Chemical><RegistryNumber>0</RegistryNumber><NameOfSubstance UI="D013634">Tannins</NameOfSubstance></Chemical><Chemical><RegistryNumber>0F897O3O4M</RegistryNumber><NameOfSubstance UI="C439395">1-phenylpropanol</NameOfSubstance></Chemical><Chemical><RegistryNumber>N762921K75</RegistryNumber><NameOfSubstance UI="D009584">Nitrogen</NameOfSubstance></Chemical></ChemicalList><CitationSubset>IM</CitationSubset><MeshHeadingList><MeshHeading><DescriptorName UI="D018506" MajorTopicYN="Y">Gene Expression Regulation, Plant</DescriptorName></MeshHeading><MeshHeading><DescriptorName UI="D005838" MajorTopicYN="N">Genotype</DescriptorName></MeshHeading><MeshHeading><DescriptorName UI="D009584" MajorTopicYN="N">Nitrogen</DescriptorName><QualifierName UI="Q000378" MajorTopicYN="Y">metabolism</QualifierName></MeshHeading><MeshHeading><DescriptorName UI="D032107" MajorTopicYN="N">Populus</DescriptorName><QualifierName UI="Q000737" MajorTopicYN="Y">chemistry</QualifierName><QualifierName UI="Q000235" MajorTopicYN="Y">genetics</QualifierName></MeshHeading><MeshHeading><DescriptorName UI="D020005" MajorTopicYN="N">Propanols</DescriptorName><QualifierName UI="Q000378" MajorTopicYN="Y">metabolism</QualifierName></MeshHeading><MeshHeading><DescriptorName UI="D012987" MajorTopicYN="N">Soil</DescriptorName><QualifierName UI="Q000737" MajorTopicYN="Y">chemistry</QualifierName></MeshHeading><MeshHeading><DescriptorName UI="D013634" MajorTopicYN="N">Tannins</DescriptorName><QualifierName UI="Q000235" MajorTopicYN="Y">genetics</QualifierName><QualifierName UI="Q000378" MajorTopicYN="N">metabolism</QualifierName></MeshHeading></MeshHeadingList><KeywordList Owner="NOTNLM"><Keyword MajorTopicYN="Y">European aspen</Keyword><Keyword MajorTopicYN="Y">Populus tremula</Keyword><Keyword MajorTopicYN="Y">condensed tannins</Keyword><Keyword MajorTopicYN="Y">genotypic variation</Keyword><Keyword MajorTopicYN="Y">nitrogen addition</Keyword><Keyword MajorTopicYN="Y">phenylpropanoid pathway</Keyword><Keyword MajorTopicYN="Y">salicinoids</Keyword></KeywordList></MedlineCitation><PubmedData><History><PubMedPubDate PubStatus="received"><Year>2016</Year><Month>04</Month><Day>29</Day></PubMedPubDate><PubMedPubDate PubStatus="accepted"><Year>2016</Year><Month>11</Month><Day>07</Day></PubMedPubDate><PubMedPubDate PubStatus="pubmed"><Year>2016</Year><Month>12</Month><Day>18</Day><Hour>6</Hour><Minute>0</Minute></PubMedPubDate><PubMedPubDate PubStatus="medline"><Year>2017</Year><Month>9</Month><Day>7</Day><Hour>6</Hour><Minute>0</Minute></PubMedPubDate><PubMedPubDate PubStatus="entrez"><Year>2016</Year><Month>12</Month><Day>18</Day><Hour>6</Hour><Minute>0</Minute></PubMedPubDate></History><PublicationStatus>ppublish</PublicationStatus><ArticleIdList><ArticleId IdType="pubmed">27986954</ArticleId><ArticleId IdType="pii">tpw118</ArticleId><ArticleId IdType="doi">10.1093/treephys/tpw118</ArticleId></ArticleIdList></PubmedData></pubmed><affiliations><list><country><li>Suède</li><li>États-Unis</li></country><region><li>Minnesota</li></region></list><tree><country name="Suède"><noRegion><name sortKey="Decker, Vicki H G" sort="Decker, Vicki H G" uniqKey="Decker V" first="Vicki H G" last="Decker">Vicki H G. Decker</name></noRegion><name sortKey="Albrectsen, Benedicte R" sort="Albrectsen, Benedicte R" uniqKey="Albrectsen B" first="Benedicte R" last="Albrectsen">Benedicte R. Albrectsen</name><name sortKey="Bandau, Franziska" sort="Bandau, Franziska" uniqKey="Bandau F" first="Franziska" last="Bandau">Franziska Bandau</name><name sortKey="Gundale, Michael J" sort="Gundale, Michael J" uniqKey="Gundale M" first="Michael J" last="Gundale">Michael J. Gundale</name></country><country name="États-Unis"><region name="Minnesota"><name sortKey="Cole, Christopher T" sort="Cole, Christopher T" uniqKey="Cole C" first="Christopher T" last="Cole">Christopher T. Cole</name></region></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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