The induction of phenylpropanoid biosynthetic enzymes by ultraviolet light or fungal elicitor in cultured parsley cells is overriden by a heat-shock treatment.
Identifieur interne : 002D40 ( Main/Exploration ); précédent : 002D39; suivant : 002D41The induction of phenylpropanoid biosynthetic enzymes by ultraviolet light or fungal elicitor in cultured parsley cells is overriden by a heat-shock treatment.
Auteurs : M H Walter [Allemagne]Source :
- Planta [ 0032-0935 ] ; 1989.
Abstract
The normal (25° C) response of parsley (Petroselinum crispum Mill.) cell suspension cultures to ultraviolet (UV) light was suppressed by a simultaneous 37° C heat-shock treatment, as indicated by the loss of the inducibility of two enzymes of flavonoid biosynthesis, phenylalanine ammonia-lyase (EC 4.3.1.5) and chalcone synthase. The effects on enzyme activity and on enzyme synthesis in vitro and in vivo were similar, indicating that regulatory control is at an early step of gene expression, presumably transcription. When heat shock was given during the course of an ongoing UV induction, both enzyme synthesis and enzyme activities ceased rapidly. Likewise, the induction of phenylalanine ammonia-lyase by an elicitor from Phytophthora megasperma f. sp. glycinea was terminated upon transfer from 25° C to 37° C. Based on these and previously published data, it is concluded that stress responses in this system are preferentially expressed in the order of heat shock, fungal elicitor and UV light.
DOI: 10.1007/BF00392148
PubMed: 24212266
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The effects on enzyme activity and on enzyme synthesis in vitro and in vivo were similar, indicating that regulatory control is at an early step of gene expression, presumably transcription. When heat shock was given during the course of an ongoing UV induction, both enzyme synthesis and enzyme activities ceased rapidly. Likewise, the induction of phenylalanine ammonia-lyase by an elicitor from Phytophthora megasperma f. sp. glycinea was terminated upon transfer from 25° C to 37° C. Based on these and previously published data, it is concluded that stress responses in this system are preferentially expressed in the order of heat shock, fungal elicitor and UV light. </div></front></TEI><pubmed><MedlineCitation Status="PubMed-not-MEDLINE" Owner="NLM"><PMID Version="1">24212266</PMID><DateCompleted><Year>2013</Year><Month>11</Month><Day>13</Day></DateCompleted><DateRevised><Year>2018</Year><Month>11</Month><Day>13</Day></DateRevised><Article PubModel="Print"><Journal><ISSN IssnType="Print">0032-0935</ISSN><JournalIssue CitedMedium="Print"><Volume>177</Volume><Issue>1</Issue><PubDate><Year>1989</Year><Month>Jan</Month></PubDate></JournalIssue><Title>Planta</Title><ISOAbbreviation>Planta</ISOAbbreviation></Journal><ArticleTitle>The induction of phenylpropanoid biosynthetic enzymes by ultraviolet light or fungal elicitor in cultured parsley cells is overriden by a heat-shock treatment.</ArticleTitle><Pagination><MedlinePgn>1-8</MedlinePgn></Pagination><ELocationID EIdType="doi" ValidYN="Y">10.1007/BF00392148</ELocationID><Abstract><AbstractText>The normal (25° C) response of parsley (Petroselinum crispum Mill.) cell suspension cultures to ultraviolet (UV) light was suppressed by a simultaneous 37° C heat-shock treatment, as indicated by the loss of the inducibility of two enzymes of flavonoid biosynthesis, phenylalanine ammonia-lyase (EC 4.3.1.5) and chalcone synthase. The effects on enzyme activity and on enzyme synthesis in vitro and in vivo were similar, indicating that regulatory control is at an early step of gene expression, presumably transcription. When heat shock was given during the course of an ongoing UV induction, both enzyme synthesis and enzyme activities ceased rapidly. Likewise, the induction of phenylalanine ammonia-lyase by an elicitor from Phytophthora megasperma f. sp. glycinea was terminated upon transfer from 25° C to 37° C. Based on these and previously published data, it is concluded that stress responses in this system are preferentially expressed in the order of heat shock, fungal elicitor and UV light. </AbstractText></Abstract><AuthorList CompleteYN="Y"><Author ValidYN="Y"><LastName>Walter</LastName><ForeName>M H</ForeName><Initials>MH</Initials><AffiliationInfo><Affiliation>Institut für Biologie II der Universität, Schänzlestrasse 1, D-7800, Freiburg i.Br., Federal Republic of Germany.</Affiliation></AffiliationInfo></Author></AuthorList><Language>eng</Language><PublicationTypeList><PublicationType UI="D016428">Journal Article</PublicationType></PublicationTypeList></Article><MedlineJournalInfo><Country>Germany</Country><MedlineTA>Planta</MedlineTA><NlmUniqueID>1250576</NlmUniqueID><ISSNLinking>0032-0935</ISSNLinking></MedlineJournalInfo></MedlineCitation><PubmedData><History><PubMedPubDate PubStatus="received"><Year>1987</Year><Month>11</Month><Day>27</Day></PubMedPubDate><PubMedPubDate 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