Molecular analysis of poplar defense against herbivory: comparison of wound- and insect elicitor-induced gene expression.
Identifieur interne : 003C83 ( Main/Curation ); précédent : 003C82; suivant : 003C84Molecular analysis of poplar defense against herbivory: comparison of wound- and insect elicitor-induced gene expression.
Auteurs : Ian T. Major [Canada] ; C Peter ConstabelSource :
- The New phytologist [ 0028-646X ] ; 2006.
Descripteurs français
- KwdFr :
- Analyse de profil d'expression de gènes (MeSH), Animaux (MeSH), Comportement alimentaire (physiologie), Expression des gènes (MeSH), Feuilles de plante (métabolisme), Gènes de plante (MeSH), Inhibiteurs trypsiques (métabolisme), Larve (physiologie), Papillons de nuit (physiologie), Populus (métabolisme), Protéines végétales (métabolisme), Étiquettes de séquences exprimées (MeSH).
- MESH :
English descriptors
- KwdEn :
- Animals (MeSH), Expressed Sequence Tags (MeSH), Feeding Behavior (physiology), Gene Expression (MeSH), Gene Expression Profiling (MeSH), Genes, Plant (MeSH), Larva (physiology), Moths (physiology), Plant Leaves (metabolism), Plant Proteins (metabolism), Populus (metabolism), Trypsin Inhibitors (metabolism).
- MESH :
- chemical , metabolism : Plant Proteins, Trypsin Inhibitors.
- metabolism : Plant Leaves, Populus.
- physiology : Feeding Behavior, Larva, Moths.
- Animals, Expressed Sequence Tags, Gene Expression, Gene Expression Profiling, Genes, Plant.
Abstract
In order to characterize defense responses of hybrid poplar (Populus trichocarpax P. deltoides), we profiled leaf transcript patterns elicited by wounding and by regurgitant from forest tent caterpillar (FTC; Malacosoma disstria), a Lepidopteran defoliator of poplars. Macroarrays were used to compare transcript profiles. Both FTC-regurgitant (FTC-R) and mechanical wounding with pliers elicited expression of a variety of genes, and for these genes our analysis indicated that these treatments induced qualitatively similar responses. Similarly, a comparison of responses of directly treated and systemically induced leaves indicated extensive overlap in the sets of induced genes. FTC-R was found to contain the insect-derived elicitor volicitin. The simulated herbivory treatments resulted in the induction of genes involved in poplar defense and secondary metabolism. We also identified wound-responsive genes with roles in primary metabolism, including a putative invertase, lipase, and acyl-activating enzyme; some of these genes may have roles in defense signaling. In addition, we found three unknown genes containing a ZIM motif which may represent novel transcription factors.
DOI: 10.1111/j.1469-8137.2006.01877.x
PubMed: 17096789
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Macroarrays were used to compare transcript profiles. Both FTC-regurgitant (FTC-R) and mechanical wounding with pliers elicited expression of a variety of genes, and for these genes our analysis indicated that these treatments induced qualitatively similar responses. Similarly, a comparison of responses of directly treated and systemically induced leaves indicated extensive overlap in the sets of induced genes. FTC-R was found to contain the insect-derived elicitor volicitin. The simulated herbivory treatments resulted in the induction of genes involved in poplar defense and secondary metabolism. We also identified wound-responsive genes with roles in primary metabolism, including a putative invertase, lipase, and acyl-activating enzyme; some of these genes may have roles in defense signaling. In addition, we found three unknown genes containing a ZIM motif which may represent novel transcription factors.</div></front></TEI><pubmed><MedlineCitation Status="MEDLINE" Owner="NLM"><PMID Version="1">17096789</PMID><DateCompleted><Year>2007</Year><Month>01</Month><Day>24</Day></DateCompleted><DateRevised><Year>2020</Year><Month>09</Month><Day>30</Day></DateRevised><Article PubModel="Print"><Journal><ISSN IssnType="Print">0028-646X</ISSN><JournalIssue CitedMedium="Print"><Volume>172</Volume><Issue>4</Issue><PubDate><Year>2006</Year></PubDate></JournalIssue><Title>The New phytologist</Title><ISOAbbreviation>New Phytol</ISOAbbreviation></Journal><ArticleTitle>Molecular analysis of poplar defense against herbivory: comparison of wound- and insect elicitor-induced gene expression.</ArticleTitle><Pagination><MedlinePgn>617-35</MedlinePgn></Pagination><Abstract><AbstractText>In order to characterize defense responses of hybrid poplar (Populus trichocarpax P. deltoides), we profiled leaf transcript patterns elicited by wounding and by regurgitant from forest tent caterpillar (FTC; Malacosoma disstria), a Lepidopteran defoliator of poplars. Macroarrays were used to compare transcript profiles. Both FTC-regurgitant (FTC-R) and mechanical wounding with pliers elicited expression of a variety of genes, and for these genes our analysis indicated that these treatments induced qualitatively similar responses. Similarly, a comparison of responses of directly treated and systemically induced leaves indicated extensive overlap in the sets of induced genes. FTC-R was found to contain the insect-derived elicitor volicitin. The simulated herbivory treatments resulted in the induction of genes involved in poplar defense and secondary metabolism. We also identified wound-responsive genes with roles in primary metabolism, including a putative invertase, lipase, and acyl-activating enzyme; some of these genes may have roles in defense signaling. 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