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- Publisher Website: 10.1104/pp.116.3.979
- Scopus: eid_2-s2.0-0032015596
- PMID: 9501130
- WOS: WOS:000072628700011
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Article: Reduction of Light-Induced Anthocyanin Accumulation in Inoculated Sorghum Mesocotyls: Implications for a Compensatory Role in the Defense Response
Title | Reduction of Light-Induced Anthocyanin Accumulation in Inoculated Sorghum Mesocotyls: Implications for a Compensatory Role in the Defense Response |
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Authors | |
Issue Date | 1998 |
Publisher | American Society of Plant Biologists. The Journal's web site is located at http://www.plantphysiol.org |
Citation | Plant Physiology, 1998, v. 116 n. 3, p. 979-989 How to Cite? |
Abstract | Sorghum (Sorghum bicolor L. Moench) accumulates the anthocyanin cyanidin 3-dimalonyl glucoside in etiolated mesocotyls in response to light. Inoculation with the nonpathogenic fungus Cochliobolus heterostrophus drastically reduced the light-induced accumulation of anthocyanin by repressing the transcription of the anthocyanin biosynthesis genes encoding flavanone 3-hydroxylase, dihydroflavonol 4-reductase, and anthocyanidin synthase. In contrast to these repression effects, fungal inoculation resulted in the synthesis of the four known 3-deoxyanthocyanidin phytoalexins and a corresponding activation of genes encoding the key branch-point enzymes in the phenylpropanoid pathway, phenylalanine ammonialyase and chalcone synthase. In addition, a gene encoding the pathogenesis-related protein PR-10 was strongly induced in response to inoculation. The accumulation of phytoalexins leveled off by 48 h after inoculation and was accompanied by a more rapid increase in the rate of anthocyanin accumulation. The results suggest that the plant represses less essential metabolic activities such as anthocyanin synthesis as a means of compensating for the immediate biochemical and physiological needs for the defense response. |
Persistent Identifier | http://hdl.handle.net/10722/178628 |
ISSN | 2023 Impact Factor: 6.5 2023 SCImago Journal Rankings: 2.101 |
ISI Accession Number ID | |
References |
DC Field | Value | Language |
---|---|---|
dc.contributor.author | Lo, SCC | en_US |
dc.contributor.author | Nicholson, RL | en_US |
dc.date.accessioned | 2012-12-19T09:48:47Z | - |
dc.date.available | 2012-12-19T09:48:47Z | - |
dc.date.issued | 1998 | en_US |
dc.identifier.citation | Plant Physiology, 1998, v. 116 n. 3, p. 979-989 | en_US |
dc.identifier.issn | 0032-0889 | en_US |
dc.identifier.uri | http://hdl.handle.net/10722/178628 | - |
dc.description.abstract | Sorghum (Sorghum bicolor L. Moench) accumulates the anthocyanin cyanidin 3-dimalonyl glucoside in etiolated mesocotyls in response to light. Inoculation with the nonpathogenic fungus Cochliobolus heterostrophus drastically reduced the light-induced accumulation of anthocyanin by repressing the transcription of the anthocyanin biosynthesis genes encoding flavanone 3-hydroxylase, dihydroflavonol 4-reductase, and anthocyanidin synthase. In contrast to these repression effects, fungal inoculation resulted in the synthesis of the four known 3-deoxyanthocyanidin phytoalexins and a corresponding activation of genes encoding the key branch-point enzymes in the phenylpropanoid pathway, phenylalanine ammonialyase and chalcone synthase. In addition, a gene encoding the pathogenesis-related protein PR-10 was strongly induced in response to inoculation. The accumulation of phytoalexins leveled off by 48 h after inoculation and was accompanied by a more rapid increase in the rate of anthocyanin accumulation. The results suggest that the plant represses less essential metabolic activities such as anthocyanin synthesis as a means of compensating for the immediate biochemical and physiological needs for the defense response. | en_US |
dc.language | eng | en_US |
dc.publisher | American Society of Plant Biologists. The Journal's web site is located at http://www.plantphysiol.org | en_US |
dc.relation.ispartof | Plant Physiology | en_US |
dc.subject.mesh | Acyltransferases - Genetics | en_US |
dc.subject.mesh | Alcohol Oxidoreductases - Genetics | en_US |
dc.subject.mesh | Anthocyanins - Analysis - Biosynthesis - Radiation Effects | en_US |
dc.subject.mesh | Benzopyrans - Metabolism | en_US |
dc.subject.mesh | Blotting, Northern | en_US |
dc.subject.mesh | Cereals - Metabolism - Microbiology - Radiation Effects | en_US |
dc.subject.mesh | Chromatography, High Pressure Liquid | en_US |
dc.subject.mesh | Cotyledon - Genetics - Microbiology - Radiation Effects | en_US |
dc.subject.mesh | Gene Expression Regulation, Plant | en_US |
dc.subject.mesh | Glucosides - Genetics | en_US |
dc.subject.mesh | Glucosyltransferases - Genetics | en_US |
dc.subject.mesh | Light | en_US |
dc.subject.mesh | Mixed Function Oxygenases - Genetics | en_US |
dc.subject.mesh | Molecular Sequence Data | en_US |
dc.subject.mesh | Phenylalanine Ammonia-Lyase - Genetics | en_US |
dc.subject.mesh | Plant Diseases - Genetics - Microbiology | en_US |
dc.subject.mesh | Plant Extracts - Analysis - Biosynthesis - Genetics | en_US |
dc.subject.mesh | Plant Proteins - Genetics | en_US |
dc.subject.mesh | Sesquiterpenes | en_US |
dc.subject.mesh | Spectrometry, Mass, Matrix-Assisted Laser Desorption-Ionization | en_US |
dc.subject.mesh | Terpenes | en_US |
dc.title | Reduction of Light-Induced Anthocyanin Accumulation in Inoculated Sorghum Mesocotyls: Implications for a Compensatory Role in the Defense Response | en_US |
dc.type | Article | en_US |
dc.identifier.email | Lo, SCC: clivelo@hkucc.hku.hk | en_US |
dc.identifier.authority | Lo, SCC=rp00751 | en_US |
dc.description.nature | link_to_subscribed_fulltext | en_US |
dc.identifier.doi | 10.1104/pp.116.3.979 | - |
dc.identifier.pmid | 9501130 | - |
dc.identifier.scopus | eid_2-s2.0-0032015596 | en_US |
dc.relation.references | http://www.scopus.com/mlt/select.url?eid=2-s2.0-0032015596&selection=ref&src=s&origin=recordpage | en_US |
dc.identifier.volume | 116 | en_US |
dc.identifier.issue | 3 | en_US |
dc.identifier.spage | 979 | en_US |
dc.identifier.epage | 989 | en_US |
dc.identifier.isi | WOS:000072628700011 | - |
dc.publisher.place | United States | en_US |
dc.identifier.scopusauthorid | Lo, SCC=15737175700 | en_US |
dc.identifier.scopusauthorid | Nicholson, RL=7201624684 | en_US |
dc.identifier.issnl | 0032-0889 | - |