Accumulation of Catechin and Proanthocyanidins in Black Poplar Stems After Infection by Plectosphaerella populi: Hormonal Regulation, Biosynthesis and Antifungal Activity.
Identifieur interne : 000B51 ( Main/Exploration ); précédent : 000B50; suivant : 000B52Accumulation of Catechin and Proanthocyanidins in Black Poplar Stems After Infection by Plectosphaerella populi: Hormonal Regulation, Biosynthesis and Antifungal Activity.
Auteurs : Chhana Ullah [Allemagne] ; Sybille B. Unsicker [Allemagne] ; Michael Reichelt [Allemagne] ; Jonathan Gershenzon [Allemagne] ; Almuth Hammerbacher [Afrique du Sud]Source :
- Frontiers in plant science [ 1664-462X ] ; 2019.
Abstract
Flavan-3-ols including the monomeric catechin and the polymeric proanthocyanidins (PAs) are abundant phenolic metabolites in poplar (Populus spp.) previously described to protect leaves against pathogen infection. However, it is not known whether stems are also defended in this way. Here we investigated flavan-3-ol accumulation, activity, and the regulation of formation in black poplar (P. nigra) stems after infection by a newly described fungal stem pathogen, Plectosphaerella populi, which forms canker-like lesions in stems. We showed that flavan-3-ol contents increased in P. populi-infected black poplar stems over the course of infection compared to non-infected controls. Transcripts of leucoanthocyanidin reductase (LAR) and anthocyanidin reductase (ANR) genes involved in the last steps of flavan-3-ol biosynthesis were also upregulated upon fungal infection indicating de novo biosynthesis. Amending culture medium with catechin and PAs reduced the mycelial growth of P. populi, suggesting that these metabolites act as anti-pathogen defenses in poplar in vivo. Among the hormones, salicylic acid (SA) was higher in P. populi-infected tissues compared to the non-infected controls over the course of infection studied, while jasmonic acid (JA) and JA-isoleucine (JA-Ile) levels were higher than controls only at the early stages of infection. Interestingly, cytokinins (CKs) were also upregulated in P. populi-infected stems. Poplar saplings treated with CK showed decreased levels of flavan-3-ols and SA in stems suggesting a negative association between CK and flavan-3-ol accumulation. Taken together, the sustained upregulation of SA in correlation with catechin and PA accumulation suggests that this is the dominant hormone inducing the formation of antifungal flavan-3-ols during P. populi infection of poplar stems.
DOI: 10.3389/fpls.2019.01441
PubMed: 31803202
PubMed Central: PMC6873352
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Unsicker</name><affiliation wicri:level="1"><nlm:affiliation>Department of Biochemistry, Max Planck Institute for Chemical Ecology, Jena, Germany.</nlm:affiliation><country xml:lang="fr">Allemagne</country><wicri:regionArea>Department of Biochemistry, Max Planck Institute for Chemical Ecology, Jena</wicri:regionArea><wicri:noRegion>Jena</wicri:noRegion><wicri:noRegion>Jena</wicri:noRegion><wicri:noRegion>Jena</wicri:noRegion></affiliation></author><author><name sortKey="Reichelt, Michael" sort="Reichelt, Michael" uniqKey="Reichelt M" first="Michael" last="Reichelt">Michael Reichelt</name><affiliation wicri:level="1"><nlm:affiliation>Department of Biochemistry, Max Planck Institute for Chemical Ecology, Jena, Germany.</nlm:affiliation><country xml:lang="fr">Allemagne</country><wicri:regionArea>Department of Biochemistry, Max Planck Institute for Chemical Ecology, Jena</wicri:regionArea><wicri:noRegion>Jena</wicri:noRegion><wicri:noRegion>Jena</wicri:noRegion><wicri:noRegion>Jena</wicri:noRegion></affiliation></author><author><name sortKey="Gershenzon, Jonathan" sort="Gershenzon, Jonathan" uniqKey="Gershenzon J" first="Jonathan" last="Gershenzon">Jonathan Gershenzon</name><affiliation wicri:level="1"><nlm:affiliation>Department of Biochemistry, Max Planck Institute for Chemical Ecology, Jena, Germany.</nlm:affiliation><country xml:lang="fr">Allemagne</country><wicri:regionArea>Department of Biochemistry, Max Planck Institute for Chemical Ecology, Jena</wicri:regionArea><wicri:noRegion>Jena</wicri:noRegion><wicri:noRegion>Jena</wicri:noRegion><wicri:noRegion>Jena</wicri:noRegion></affiliation></author><author><name sortKey="Hammerbacher, Almuth" sort="Hammerbacher, Almuth" uniqKey="Hammerbacher A" first="Almuth" last="Hammerbacher">Almuth Hammerbacher</name><affiliation wicri:level="1"><nlm:affiliation>Department of Zoology and Entomology, Forestry and Agricultural Biotechnology Institute, University of Pretoria, Pretoria, South Africa.</nlm:affiliation><country xml:lang="fr">Afrique du Sud</country><wicri:regionArea>Department of Zoology and Entomology, Forestry and Agricultural Biotechnology Institute, University of Pretoria, Pretoria</wicri:regionArea><wicri:noRegion>Pretoria</wicri:noRegion></affiliation></author></analytic><series><title level="j">Frontiers in plant science</title><idno type="ISSN">1664-462X</idno><imprint><date when="2019" type="published">2019</date></imprint></series></biblStruct></sourceDesc></fileDesc><profileDesc><textClass></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">Flavan-3-ols including the monomeric catechin and the polymeric proanthocyanidins (PAs) are abundant phenolic metabolites in poplar (<i>Populus</i> spp.) previously described to protect leaves against pathogen infection. However, it is not known whether stems are also defended in this way. Here we investigated flavan-3-ol accumulation, activity, and the regulation of formation in black poplar (<i>P. nigra</i>) stems after infection by a newly described fungal stem pathogen, <i>Plectosphaerella populi</i>, which forms canker-like lesions in stems. We showed that flavan-3-ol contents increased in <i>P. populi</i>-infected black poplar stems over the course of infection compared to non-infected controls. Transcripts of leucoanthocyanidin reductase (<i>LAR</i>) and anthocyanidin reductase (<i>ANR</i>) genes involved in the last steps of flavan-3-ol biosynthesis were also upregulated upon fungal infection indicating <i>de novo</i> biosynthesis. Amending culture medium with catechin and PAs reduced the mycelial growth of <i>P. populi</i>, suggesting that these metabolites act as anti-pathogen defenses in poplar <i>in vivo</i>. Among the hormones, salicylic acid (SA) was higher in <i>P. populi</i>-infected tissues compared to the non-infected controls over the course of infection studied, while jasmonic acid (JA) and JA-isoleucine (JA-Ile) levels were higher than controls only at the early stages of infection. Interestingly, cytokinins (CKs) were also upregulated in <i>P. populi</i>-infected stems. Poplar saplings treated with CK showed decreased levels of flavan-3-ols and SA in stems suggesting a negative association between CK and flavan-3-ol accumulation. Taken together, the sustained upregulation of SA in correlation with catechin and PA accumulation suggests that this is the dominant hormone inducing the formation of antifungal flavan-3-ols during <i>P. populi</i> infection of poplar stems.</div></front></TEI><pubmed><MedlineCitation Status="PubMed-not-MEDLINE" Owner="NLM"><PMID Version="1">31803202</PMID><DateRevised><Year>2020</Year><Month>10</Month><Day>01</Day></DateRevised><Article PubModel="Electronic-eCollection"><Journal><ISSN IssnType="Print">1664-462X</ISSN><JournalIssue CitedMedium="Print"><Volume>10</Volume><PubDate><Year>2019</Year></PubDate></JournalIssue><Title>Frontiers in plant science</Title><ISOAbbreviation>Front Plant Sci</ISOAbbreviation></Journal><ArticleTitle>Accumulation of Catechin and Proanthocyanidins in Black Poplar Stems After Infection by <i>Plectosphaerella populi</i>: Hormonal Regulation, Biosynthesis and Antifungal Activity.</ArticleTitle><Pagination><MedlinePgn>1441</MedlinePgn></Pagination><ELocationID EIdType="doi" ValidYN="Y">10.3389/fpls.2019.01441</ELocationID><Abstract><AbstractText>Flavan-3-ols including the monomeric catechin and the polymeric proanthocyanidins (PAs) are abundant phenolic metabolites in poplar (<i>Populus</i> spp.) previously described to protect leaves against pathogen infection. However, it is not known whether stems are also defended in this way. Here we investigated flavan-3-ol accumulation, activity, and the regulation of formation in black poplar (<i>P. nigra</i>) stems after infection by a newly described fungal stem pathogen, <i>Plectosphaerella populi</i>, which forms canker-like lesions in stems. We showed that flavan-3-ol contents increased in <i>P. populi</i>-infected black poplar stems over the course of infection compared to non-infected controls. Transcripts of leucoanthocyanidin reductase (<i>LAR</i>) and anthocyanidin reductase (<i>ANR</i>) genes involved in the last steps of flavan-3-ol biosynthesis were also upregulated upon fungal infection indicating <i>de novo</i> biosynthesis. Amending culture medium with catechin and PAs reduced the mycelial growth of <i>P. populi</i>, suggesting that these metabolites act as anti-pathogen defenses in poplar <i>in vivo</i>. Among the hormones, salicylic acid (SA) was higher in <i>P. populi</i>-infected tissues compared to the non-infected controls over the course of infection studied, while jasmonic acid (JA) and JA-isoleucine (JA-Ile) levels were higher than controls only at the early stages of infection. Interestingly, cytokinins (CKs) were also upregulated in <i>P. populi</i>-infected stems. Poplar saplings treated with CK showed decreased levels of flavan-3-ols and SA in stems suggesting a negative association between CK and flavan-3-ol accumulation. Taken together, the sustained upregulation of SA in correlation with catechin and PA accumulation suggests that this is the dominant hormone inducing the formation of antifungal flavan-3-ols during <i>P. populi</i> infection of poplar stems.</AbstractText><CopyrightInformation>Copyright © 2019 Ullah, Unsicker, Reichelt, Gershenzon and Hammerbacher.</CopyrightInformation></Abstract><AuthorList CompleteYN="Y"><Author ValidYN="Y"><LastName>Ullah</LastName><ForeName>Chhana</ForeName><Initials>C</Initials><AffiliationInfo><Affiliation>Department of Biochemistry, Max Planck Institute for Chemical Ecology, Jena, Germany.</Affiliation></AffiliationInfo></Author><Author ValidYN="Y"><LastName>Unsicker</LastName><ForeName>Sybille B</ForeName><Initials>SB</Initials><AffiliationInfo><Affiliation>Department of Biochemistry, Max Planck Institute for Chemical Ecology, Jena, Germany.</Affiliation></AffiliationInfo></Author><Author ValidYN="Y"><LastName>Reichelt</LastName><ForeName>Michael</ForeName><Initials>M</Initials><AffiliationInfo><Affiliation>Department of Biochemistry, Max Planck Institute for Chemical Ecology, Jena, Germany.</Affiliation></AffiliationInfo></Author><Author ValidYN="Y"><LastName>Gershenzon</LastName><ForeName>Jonathan</ForeName><Initials>J</Initials><AffiliationInfo><Affiliation>Department of Biochemistry, Max Planck Institute for Chemical Ecology, Jena, Germany.</Affiliation></AffiliationInfo></Author><Author ValidYN="Y"><LastName>Hammerbacher</LastName><ForeName>Almuth</ForeName><Initials>A</Initials><AffiliationInfo><Affiliation>Department of Zoology and Entomology, Forestry and Agricultural Biotechnology Institute, University of Pretoria, Pretoria, South Africa.</Affiliation></AffiliationInfo></Author></AuthorList><Language>eng</Language><PublicationTypeList><PublicationType UI="D016428">Journal Article</PublicationType></PublicationTypeList><ArticleDate DateType="Electronic"><Year>2019</Year><Month>11</Month><Day>15</Day></ArticleDate></Article><MedlineJournalInfo><Country>Switzerland</Country><MedlineTA>Front Plant Sci</MedlineTA><NlmUniqueID>101568200</NlmUniqueID><ISSNLinking>1664-462X</ISSNLinking></MedlineJournalInfo><KeywordList Owner="NOTNLM"><Keyword MajorTopicYN="N">Populus</Keyword><Keyword MajorTopicYN="N">chemical defense</Keyword><Keyword MajorTopicYN="N">cytokinin</Keyword><Keyword MajorTopicYN="N">flavonoids</Keyword><Keyword MajorTopicYN="N">phytohormones</Keyword><Keyword MajorTopicYN="N">salicylic acid</Keyword><Keyword MajorTopicYN="N">secondary metabolism</Keyword></KeywordList></MedlineCitation><PubmedData><History><PubMedPubDate PubStatus="received"><Year>2019</Year><Month>07</Month><Day>30</Day></PubMedPubDate><PubMedPubDate PubStatus="accepted"><Year>2019</Year><Month>10</Month><Day>16</Day></PubMedPubDate><PubMedPubDate 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sortKey="Reichelt, Michael" sort="Reichelt, Michael" uniqKey="Reichelt M" first="Michael" last="Reichelt">Michael Reichelt</name><name sortKey="Unsicker, Sybille B" sort="Unsicker, Sybille B" uniqKey="Unsicker S" first="Sybille B" last="Unsicker">Sybille B. Unsicker</name></country><country name="Afrique du Sud"><noRegion><name sortKey="Hammerbacher, Almuth" sort="Hammerbacher, Almuth" uniqKey="Hammerbacher A" first="Almuth" last="Hammerbacher">Almuth Hammerbacher</name></noRegion></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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