Changes in gene expression profiles as they relate to the adult plant leaf rust resistance in the wheat cv. Toropi
Leaf rust, caused by the foliar pathogen Puccinia triticina is a major disease of wheat in the southern region of Brazil and invariably impacts on production, being responsible for high yield losses. The Brazilian wheat cultivar Toropi has proven, durable adult plant resistance (APR) to leaf rust, w...
| Publié dans: | Physiological and molecular plant pathology. - 1998. - 89(2015) vom: 02. Jan., Seite 49-54 |
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| Auteur principal: | |
| Autres auteurs: | , , , , |
| Format: | Article |
| Langue: | English |
| Publié: |
2015
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| Accès à la collection: | Physiological and molecular plant pathology |
| Sujets: | Journal Article APR, adult plant resistance AQP1, aquaporin COMT1, caffeic acid O-methyltransferase ETI, Effector-Triggered-Immunity FREX, fructan exohydrolase G6DPH, glucose-6-phosphate dehydrogenase GAPDH, glyceraldehyde 3-phosphate dehydrogenase HSP80, heat shock protein 80 LHC, light-harvesting complex plus... |
| Résumé: | Leaf rust, caused by the foliar pathogen Puccinia triticina is a major disease of wheat in the southern region of Brazil and invariably impacts on production, being responsible for high yield losses. The Brazilian wheat cultivar Toropi has proven, durable adult plant resistance (APR) to leaf rust, which uniquely shows a pre-haustorial resistance phenotype. In this study we aimed to understand the interaction between P. triticina and the pre-haustorial APR in Toropi by quantitatively evaluating the temporal transcription profiles of selected genes known to be related to infection and defense in wheat. The expression profiles of 15 selected genes varied over time, grouping into six expression profile groups. The expression profiles indicated the induction of classical defence pathways in response to pathogen development, but also the potential modification of Toropi's cellular status for the benefit of the pathogen. Classical defence genes, including peroxidases, β-1,3-glucanases and an endochitinase were expressed both early (pre-haustorial) and late (post-haustorial) over the 72 h infection time course, while induction of transcription of other infection-related genes with a potential role in defence, although variable was maintained through-out. These genes directly or indirectly had a role in plant lignification, oxidative stress, the regulation of energy supply, water and lipid transport, and cell cycle regulation. The early induction of transcription of defence-related genes supports the pre-haustorial resistance phenotype in Toropi, providing a valuable source of genes controlling leaf rust resistance for wheat breeding |
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| Description: | Date Revised 22.03.2024 published: Print Citation Status PubMed-not-MEDLINE |
| ISSN: | 0885-5765 |