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Article: Phytoalexin accumulation in sorghum: Identification of a methyl ether of luteolinidin

TitlePhytoalexin accumulation in sorghum: Identification of a methyl ether of luteolinidin
Authors
Issue Date1996
PublisherAcademic Press. The Journal's web site is located at http://www.elsevier.com/locate/pmpp
Citation
Physiological And Molecular Plant Pathology, 1996, v. 49 n. 1, p. 21-31 How to Cite?
AbstractA method of HPLC analysis of 3-deoxyanthocyanidins was developed which allowed the detection of these phytoalexins by plasma desorption mass spectrometry (PDMS). In addition, the times at which samples were taken were increased to 60 h post-inoculation. As a result of the changes in protocol, a new deoxyanthocyanidin was detected. The compound was isolated and purified and found by PDMS to have a molecular weight of 285. In addition to the PDMS data, bathochromic shift analyses indicated that the structure of the compound is consistent with that of a 5-methyl ether of luteolinidin. Fungitoxicity assays demonstrated that the compound is a phytoalexin as it prevented germination by, and kiled conidia of Colletotrichum sublineolum, the sorghum anthracnose pathogen, at a concentration of 3 μM. The 5- methoxyluteolinidin exhibited greater fungitoxicity than luteolinidin, a non- methoxylated phytoalexin.
Persistent Identifierhttp://hdl.handle.net/10722/178589
ISSN
2015 Impact Factor: 1.371
2015 SCImago Journal Rankings: 0.613
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorLo, SCen_US
dc.contributor.authorWeiergang, Ien_US
dc.contributor.authorBonham, Cen_US
dc.contributor.authorHipskind, Jen_US
dc.contributor.authorWood, Ken_US
dc.contributor.authorNicholson, RLen_US
dc.date.accessioned2012-12-19T09:48:32Z-
dc.date.available2012-12-19T09:48:32Z-
dc.date.issued1996en_US
dc.identifier.citationPhysiological And Molecular Plant Pathology, 1996, v. 49 n. 1, p. 21-31en_US
dc.identifier.issn0885-5765en_US
dc.identifier.urihttp://hdl.handle.net/10722/178589-
dc.description.abstractA method of HPLC analysis of 3-deoxyanthocyanidins was developed which allowed the detection of these phytoalexins by plasma desorption mass spectrometry (PDMS). In addition, the times at which samples were taken were increased to 60 h post-inoculation. As a result of the changes in protocol, a new deoxyanthocyanidin was detected. The compound was isolated and purified and found by PDMS to have a molecular weight of 285. In addition to the PDMS data, bathochromic shift analyses indicated that the structure of the compound is consistent with that of a 5-methyl ether of luteolinidin. Fungitoxicity assays demonstrated that the compound is a phytoalexin as it prevented germination by, and kiled conidia of Colletotrichum sublineolum, the sorghum anthracnose pathogen, at a concentration of 3 μM. The 5- methoxyluteolinidin exhibited greater fungitoxicity than luteolinidin, a non- methoxylated phytoalexin.en_US
dc.languageengen_US
dc.publisherAcademic Press. The Journal's web site is located at http://www.elsevier.com/locate/pmppen_US
dc.relation.ispartofPhysiological and Molecular Plant Pathologyen_US
dc.titlePhytoalexin accumulation in sorghum: Identification of a methyl ether of luteolinidinen_US
dc.typeArticleen_US
dc.identifier.emailLo, SC: clivelo@hkucc.hku.hken_US
dc.identifier.authorityLo, SC=rp00751en_US
dc.description.naturelink_to_subscribed_fulltexten_US
dc.identifier.doi10.1006/pmpp.1996.0036en_US
dc.identifier.scopuseid_2-s2.0-0030198741en_US
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-0030198741&selection=ref&src=s&origin=recordpageen_US
dc.identifier.volume49en_US
dc.identifier.issue1en_US
dc.identifier.spage21en_US
dc.identifier.epage31en_US
dc.identifier.isiWOS:A1996VE02100002-
dc.publisher.placeUnited Kingdomen_US
dc.identifier.scopusauthoridLo, SC=15737175700en_US
dc.identifier.scopusauthoridWeiergang, I=6603454543en_US
dc.identifier.scopusauthoridBonham, C=7006060798en_US
dc.identifier.scopusauthoridHipskind, J=6603397831en_US
dc.identifier.scopusauthoridWood, K=7401835657en_US
dc.identifier.scopusauthoridNicholson, RL=7201624684en_US

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