Journal
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
Volume 19, Issue 2, Pages -Publisher
MDPI
DOI: 10.3390/ijms19020357
Keywords
Solanum melongena; doubled haploid population; bacterial wilt; quantitative trait locus (QTL) mapping; polygenic resistance
Funding
- Centre de Cooperation Internationale en Recherche Agronomique pour le Developpement (CIRAD)
- French National Institute for Agricultural Research (INRA)
- Ministry of Agriculture, Food, Fisheries, Rural Affairs and Spatial Planning through the RESAUBER project [CASDAR C-2013-09]
- Agence Nationale de la Recherche et de la Technologie (ANRT) through the CIFRE [2013/1477]
- European Regional Development Fund (ERDF)
- Conseil Regional de la Reunion
- Conseil General de la Reunion
Ask authors/readers for more resources
Eggplant cultivation is limited by numerous diseases, including the devastating bacterial wilt (BW) caused by the Ralstonia solanacearum species complex (RSSC). Within the RSSC, Ralstonia pseudosolanacearum (including phylotypes I and III) causes severe damage to all solanaceous crops, including eggplant. Therefore, the creation of cultivars resistant to R. pseudosolanacearum strains is a major goal for breeders. An intraspecific eggplant population, segregating for resistance, was created from the cross between the susceptible MM738 and the resistant EG203 lines. The population of 123 doubled haploid lines was challenged with two strains belonging to phylotypes I (PSS4) and III (R3598), which both bypass the published EBWR9 BW-resistance quantitative trait locus (QTL). Ten and three QTLs of resistance to PSS4 and to R3598, respectively, were detected and mapped. All were strongly influenced by environmental conditions. The most stable QTLs were found on chromosomes 3 and 6. Given their estimated physical position, these newly detected QTLs are putatively syntenic with BW-resistance QTLs in tomato. In particular, the QTLs' position on chromosome 6 overlaps with that of the major broad-spectrum tomato resistance QTL Bwr-6. The present study is a first step towards understanding the complex polygenic system, which underlies the high level of BW resistance of the EG203 line.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available