The effects of infection by Phytophthora infestans on the control of phenylpropanoid metabolism in wounded potato tissue.
Identifieur interne : 002E50 ( Main/Exploration ); précédent : 002E49; suivant : 002E51The effects of infection by Phytophthora infestans on the control of phenylpropanoid metabolism in wounded potato tissue.
Auteurs : B G Smith [Royaume-Uni] ; P H RuberySource :
- Planta [ 0032-0935 ] ; 1981.
Abstract
During the first 24 h of in vitro incubation of excised potato tuber (Solanum tuberosum L.) discs, the appearance of phenylalanine ammonia-lyase (PAL; EC 3.4.1.5) and the accumulation of chlorogenic acid are both stimulated by infection with Phytophthora infestans (Mont.) de Bary. Whereas in control tissue the level of PAL reached a stable plateau value after 40 h, in infected tissue it subsequently rose again, in one experiment, as the fungal mycelium developed. In the infected but not the control tissue, the level of chlorogenic acid subsequently fell to about to about 20% of its maximum after 50 h. The time courses of increases in cinnamic acid 4-hydroxylase (CA4H; EC 1.14.13.11; 0-60 h) and of caffeic acid acid o-methyltransferase (COMT; EC 2.1.1.42; 0-160 h) are not altered by fungal infection. If the discs are restored to the tuber environment immediately after excision, by placing them inside a "host tuber", the activity of PAL as well as those of CA4H and COMT remained at the constant low endogenous level for at least 60 h, irrespective of whether the discs had first been inoculated with P. infestans. The increase in PAL may not be an obligatory feature of the P. infestans/potato compatible interaction but dependent on an underlying wound response. The experiments provide further evidence that PAL is the rate limiting step of chlorogenic acid biosynthesis in potato tuber discs.
DOI: 10.1007/BF00387431
PubMed: 24302205
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Whereas in control tissue the level of PAL reached a stable plateau value after 40 h, in infected tissue it subsequently rose again, in one experiment, as the fungal mycelium developed. In the infected but not the control tissue, the level of chlorogenic acid subsequently fell to about to about 20% of its maximum after 50 h. The time courses of increases in cinnamic acid 4-hydroxylase (CA4H; EC 1.14.13.11; 0-60 h) and of caffeic acid acid o-methyltransferase (COMT; EC 2.1.1.42; 0-160 h) are not altered by fungal infection. If the discs are restored to the tuber environment immediately after excision, by placing them inside a "host tuber", the activity of PAL as well as those of CA4H and COMT remained at the constant low endogenous level for at least 60 h, irrespective of whether the discs had first been inoculated with P. infestans. The increase in PAL may not be an obligatory feature of the P. infestans/potato compatible interaction but dependent on an underlying wound response. The experiments provide further evidence that PAL is the rate limiting step of chlorogenic acid biosynthesis in potato tuber discs. </div></front></TEI><pubmed><MedlineCitation Status="PubMed-not-MEDLINE" Owner="NLM"><PMID Version="1">24302205</PMID><DateCompleted><Year>2013</Year><Month>12</Month><Day>05</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>151</Volume><Issue>6</Issue><PubDate><Year>1981</Year><Month>May</Month></PubDate></JournalIssue><Title>Planta</Title><ISOAbbreviation>Planta</ISOAbbreviation></Journal><ArticleTitle>The effects of infection by Phytophthora infestans on the control of phenylpropanoid metabolism in wounded potato tissue.</ArticleTitle><Pagination><MedlinePgn>535-40</MedlinePgn></Pagination><ELocationID EIdType="doi" ValidYN="Y">10.1007/BF00387431</ELocationID><Abstract><AbstractText>During the first 24 h of in vitro incubation of excised potato tuber (Solanum tuberosum L.) discs, the appearance of phenylalanine ammonia-lyase (PAL; EC 3.4.1.5) and the accumulation of chlorogenic acid are both stimulated by infection with Phytophthora infestans (Mont.) de Bary. Whereas in control tissue the level of PAL reached a stable plateau value after 40 h, in infected tissue it subsequently rose again, in one experiment, as the fungal mycelium developed. In the infected but not the control tissue, the level of chlorogenic acid subsequently fell to about to about 20% of its maximum after 50 h. The time courses of increases in cinnamic acid 4-hydroxylase (CA4H; EC 1.14.13.11; 0-60 h) and of caffeic acid acid o-methyltransferase (COMT; EC 2.1.1.42; 0-160 h) are not altered by fungal infection. If the discs are restored to the tuber environment immediately after excision, by placing them inside a "host tuber", the activity of PAL as well as those of CA4H and COMT remained at the constant low endogenous level for at least 60 h, irrespective of whether the discs had first been inoculated with P. infestans. The increase in PAL may not be an obligatory feature of the P. infestans/potato compatible interaction but dependent on an underlying wound response. The experiments provide further evidence that PAL is the rate limiting step of chlorogenic acid biosynthesis in potato tuber discs. </AbstractText></Abstract><AuthorList CompleteYN="Y"><Author ValidYN="Y"><LastName>Smith</LastName><ForeName>B G</ForeName><Initials>BG</Initials><AffiliationInfo><Affiliation>Department of Biochemistry, University of Cambridge, Tennis Court Road, CB2 1QW, Cambridge, UK.</Affiliation></AffiliationInfo></Author><Author ValidYN="Y"><LastName>Rubery</LastName><ForeName>P H</ForeName><Initials>PH</Initials></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>1980</Year><Month>10</Month><Day>01</Day></PubMedPubDate><PubMedPubDate PubStatus="accepted"><Year>1980</Year><Month>12</Month><Day>12</Day></PubMedPubDate><PubMedPubDate PubStatus="entrez"><Year>2013</Year><Month>12</Month><Day>5</Day><Hour>6</Hour><Minute>0</Minute></PubMedPubDate><PubMedPubDate PubStatus="pubmed"><Year>1981</Year><Month>5</Month><Day>1</Day><Hour>0</Hour><Minute>0</Minute></PubMedPubDate><PubMedPubDate PubStatus="medline"><Year>1981</Year><Month>5</Month><Day>1</Day><Hour>0</Hour><Minute>1</Minute></PubMedPubDate></History><PublicationStatus>ppublish</PublicationStatus><ArticleIdList><ArticleId IdType="pubmed">24302205</ArticleId><ArticleId IdType="doi">10.1007/BF00387431</ArticleId></ArticleIdList><ReferenceList><Reference><Citation>Plant Physiol. 1966 Oct;41(8):1350-9</Citation><ArticleIdList><ArticleId IdType="pubmed">16656406</ArticleId></ArticleIdList></Reference><Reference><Citation>J Theor Biol. 1976 Aug 7;60(2):441-7</Citation><ArticleIdList><ArticleId IdType="pubmed">957726</ArticleId></ArticleIdList></Reference><Reference><Citation>Planta. 1977 Jan;135(2):169-75</Citation><ArticleIdList><ArticleId IdType="pubmed">24420020</ArticleId></ArticleIdList></Reference><Reference><Citation>Biochim Biophys Acta. 1979 Jan 18;582(2):196-212</Citation><ArticleIdList><ArticleId IdType="pubmed">760822</ArticleId></ArticleIdList></Reference><Reference><Citation>FEBS Lett. 1977 Mar 15;75(1):37-40</Citation><ArticleIdList><ArticleId IdType="pubmed">852590</ArticleId></ArticleIdList></Reference><Reference><Citation>J Gen Microbiol. 1965 Sep;40(3):431-7</Citation><ArticleIdList><ArticleId IdType="pubmed">5864894</ArticleId></ArticleIdList></Reference><Reference><Citation>Arch Biochem Biophys. 1979 Jan;192(1):311-7</Citation><ArticleIdList><ArticleId IdType="pubmed">312054</ArticleId></ArticleIdList></Reference><Reference><Citation>Planta. 1976 Jan;130(3):283-90</Citation><ArticleIdList><ArticleId IdType="pubmed">24424641</ArticleId></ArticleIdList></Reference><Reference><Citation>Biochem Pharmacol. 1978 Mar 1;27(5):773-5</Citation><ArticleIdList><ArticleId IdType="pubmed">656116</ArticleId></ArticleIdList></Reference><Reference><Citation>Plant Physiol. 1965 Sep;40(5):779-84</Citation><ArticleIdList><ArticleId IdType="pubmed">16656157</ArticleId></ArticleIdList></Reference><Reference><Citation>Anal Biochem. 1975 Oct;68(2):554-61</Citation><ArticleIdList><ArticleId IdType="pubmed">926</ArticleId></ArticleIdList></Reference></ReferenceList></PubmedData></pubmed><affiliations><list><country><li>Royaume-Uni</li></country><region><li>Angleterre</li><li>Angleterre de l'Est</li></region><settlement><li>Cambridge</li></settlement><orgName><li>Université de Cambridge</li></orgName></list><tree><noCountry><name sortKey="Rubery, P H" sort="Rubery, P H" uniqKey="Rubery P" first="P H" last="Rubery">P H Rubery</name></noCountry><country name="Royaume-Uni"><region name="Angleterre"><name sortKey="Smith, B G" sort="Smith, B G" uniqKey="Smith B" first="B G" last="Smith">B G Smith</name></region></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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