Publications by authors named "Aurelie Chague"
Members of the eukaryotic translation initiation complex are co-opted in viral infection, leading to susceptibility in many crop species, including stone fruit trees (Prunus spp.). Therefore, modification of one of those eukaryotic translation initiation factors or changes in their gene expression may result in resistance.
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- Domestication is crucial for understanding species diversification, particularly in perennial plants like fruit trees, compared to annual crops.
- This study analyzed wild and cultivated apricot species across Eurasia using genetic markers, revealing genetic clusters and hybridization effects among different species.
- The research identified three distinct domestication events for apricots in Europe, Central Asia, and China, indicating ancient gene flow and extensive genetic mixing among cultivated varieties.
Background: In plants, host factors encoded by susceptibility (S) genes are indispensable for viral infection. Resistance is achieved through the impairment or the absence of those susceptibility factors. Many S genes have been cloned from model and crop species and a majority of them are coding for members of the eukaryotic translation initiation complex, mainly eIF4E, eIF4G and their isoforms.
View Article and Find Full Text PDFStudying domesticated species and their wild relatives allows understanding of the mechanisms of population divergence and adaptation, and identifying valuable genetic resources. Apricot is an important fruit in the Northern hemisphere, where it is threatened by the Plum pox virus (PPV), causing the sharka disease. The histories of apricot domestication and of its resistance to sharka are however still poorly understood.
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- - The study addresses limitations in identifying individual genes associated with traits in fruit trees by using genome-wide association (GWA) mapping in apricot for Plum Pox Virus (PPV) resistance.
- - It leverages the genetic diversity of apricot germplasm and utilizes next-generation sequencing alongside the peach genome reference for identifying single nucleotide polymorphisms (SNPs).
- - The findings validate existing resistance QTL intervals and identify new potential resistance loci, demonstrating the effectiveness of GWA in pinpointing candidate genes for further research.
Sharka is a devastating viral disease caused by the Plum pox virus (PPV) in stone fruit trees and few sources of resistance are known in its natural hosts. Since any knowledge gained from Arabidopsis on plant virus susceptibility factors is likely to be transferable to crop species, Arabidopsis's natural variation was searched for host factors essential for PPV infection. To locate regions of the genome associated with susceptibility to PPV, linkage analysis was performed on six biparental populations as well as on multiparental lines.
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