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Effects of stolbur phytoplasma infection on DNA methylation processes in tomato plants
PRACROS, Pascale
Services déconcentrés d'appui à la recherche Nouvelle-Aquitaine-Bordeaux [SDAR Nouvelle-Aquitaine-Bordeaux]
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Services déconcentrés d'appui à la recherche Nouvelle-Aquitaine-Bordeaux [SDAR Nouvelle-Aquitaine-Bordeaux]
Language
en
Article de revue
This item was published in
Plant Pathology. 2013, vol. 62, n° 1, p. 205-216
Wiley
English Abstract
DNA methylation was investigated as a possible mechanism for regulation of floral gene expression in stolbur phytoplasma-infected tomato buds. Expression of methylase and demethylase genes was found to be globally ...Read more >
DNA methylation was investigated as a possible mechanism for regulation of floral gene expression in stolbur phytoplasma-infected tomato buds. Expression of methylase and demethylase genes was found to be globally down-regulated in tomato plants infected with stolbur isolate PO, but not in those infected with isolate C. These results are consistent with the finding that SlDEF, a gene orthologous to arabidopsis APETALA3 which is involved in petal formation, was down-regulated in stolbur PO-infected buds and remained unaffected in stolbur C-infected buds, and with the fact that the two stolbur phytoplasma isolates C and PO induce distinct symptoms. Because of variations between the different cell-types of the flower buds, the DNA methylation status of SlDEF could not be clearly established. However, the finding that treatment of stolbur PO-infected plants with 5-azacytidine partially restored SlDEF gene expression strongly suggests that DNA methylation is involved in down-regulation of floral development genes in stolbur PO-infected tomatoes.Read less <
English Keywords
5-azacytidine
demethylases
DNA methylation
flower development genes
methylases
stolbur phytoplasma
Origin
Hal importedCollections