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Article: Accumulation of 3-deoxyanthocyanidin phytoalexins and resistance to Colletotrichum sublineolum in sorghum

TitleAccumulation of 3-deoxyanthocyanidin phytoalexins and resistance to Colletotrichum sublineolum in sorghum
Authors
Keywords3-Deoxyanthocyanidins
Anthracnose
Colletotrichum Sublineolum
Phytoalexins
Resistance
Sorghum
Issue Date1999
PublisherAcademic Press. The Journal's web site is located at http://www.elsevier.com/locate/pmpp
Citation
Physiological And Molecular Plant Pathology, 1999, v. 55 n. 5, p. 263-273 How to Cite?
Abstract3-Deoxyanthocyanidins are the principal phytoalexins that accumulate in sorghum in response to fungal infection. Two cultivars which differed in their reaction to Colletotrichum sublineolum, the pathogen causing the anthracnose disease in sorghum, were examined for their phytoalexin response and expression of defense-related genes. In the incompatible interaction, fungal development in the host was contained during early stages of pathogenesis. When compared to the susceptible cultivar, defense responses in the resistant cultivar were characterized by a greater and faster accumulation of phytoalexins and an earlier induction of defense-related genes encoding chalcone synthase and pathogenesis-related protein PR-10. In the compatible interaction, the pathogen was able to colonize the host with the proliferation of primary and secondary hyphae. In addition to the quantitative and timing differences, there were qualitative differences between the cultivars in their phytoalexin response. Thus, the resistant cultivar accumulated a complex phytoalexin mixture, including luteolinidin and 5-methoxyluteolinidin, neither of which was produced by the susceptible cultivar following fungal inoculation. These compounds were shown previously to exhibit higher fungitoxicity than other phytoalexin components in sorghum. Our results demonstrate that 3-deoxyanthocyanidin phytoalexins represent major components of resistance to C. sublineolum in sorghum.
Persistent Identifierhttp://hdl.handle.net/10722/178646
ISSN
2015 Impact Factor: 1.371
2015 SCImago Journal Rankings: 0.613
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorLo, SCCen_US
dc.contributor.authorDe Verdier, Ken_US
dc.contributor.authorNicholson, RLen_US
dc.date.accessioned2012-12-19T09:48:55Z-
dc.date.available2012-12-19T09:48:55Z-
dc.date.issued1999en_US
dc.identifier.citationPhysiological And Molecular Plant Pathology, 1999, v. 55 n. 5, p. 263-273en_US
dc.identifier.issn0885-5765en_US
dc.identifier.urihttp://hdl.handle.net/10722/178646-
dc.description.abstract3-Deoxyanthocyanidins are the principal phytoalexins that accumulate in sorghum in response to fungal infection. Two cultivars which differed in their reaction to Colletotrichum sublineolum, the pathogen causing the anthracnose disease in sorghum, were examined for their phytoalexin response and expression of defense-related genes. In the incompatible interaction, fungal development in the host was contained during early stages of pathogenesis. When compared to the susceptible cultivar, defense responses in the resistant cultivar were characterized by a greater and faster accumulation of phytoalexins and an earlier induction of defense-related genes encoding chalcone synthase and pathogenesis-related protein PR-10. In the compatible interaction, the pathogen was able to colonize the host with the proliferation of primary and secondary hyphae. In addition to the quantitative and timing differences, there were qualitative differences between the cultivars in their phytoalexin response. Thus, the resistant cultivar accumulated a complex phytoalexin mixture, including luteolinidin and 5-methoxyluteolinidin, neither of which was produced by the susceptible cultivar following fungal inoculation. These compounds were shown previously to exhibit higher fungitoxicity than other phytoalexin components in sorghum. Our results demonstrate that 3-deoxyanthocyanidin phytoalexins represent major components of resistance to C. sublineolum in sorghum.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.subject3-Deoxyanthocyanidinsen_US
dc.subjectAnthracnoseen_US
dc.subjectColletotrichum Sublineolumen_US
dc.subjectPhytoalexinsen_US
dc.subjectResistanceen_US
dc.subjectSorghumen_US
dc.titleAccumulation of 3-deoxyanthocyanidin phytoalexins and resistance to Colletotrichum sublineolum in sorghumen_US
dc.typeArticleen_US
dc.identifier.emailLo, SCC: clivelo@hkucc.hku.hken_US
dc.identifier.authorityLo, SCC=rp00751en_US
dc.description.naturelink_to_subscribed_fulltexten_US
dc.identifier.doi10.1006/pmpp.1999.0231en_US
dc.identifier.scopuseid_2-s2.0-0032702309en_US
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-0032702309&selection=ref&src=s&origin=recordpageen_US
dc.identifier.volume55en_US
dc.identifier.issue5en_US
dc.identifier.spage263en_US
dc.identifier.epage273en_US
dc.identifier.isiWOS:000083648700002-
dc.publisher.placeUnited Kingdomen_US
dc.identifier.scopusauthoridLo, SCC=15737175700en_US
dc.identifier.scopusauthoridDe Verdier, K=6507678853en_US
dc.identifier.scopusauthoridNicholson, RL=7201624684en_US

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