publication . Article . Other literature type . 2015

Patterns of genetic diversity and differentiation in resistance gene clusters of two hybridizing European Populus species

Kai N. Stölting; Thelma Barbará; Santiago C. González-Martínez; Celine Caseys; Celine Caseys; Christian Lexer; Christian Lexer;
Open Access English
  • Published: 24 Jul 2015
  • Publisher: HAL CCSD
Abstract
Resistance genes (R-genes) are essential for long-lived organisms such as forest trees, which are exposed to diverse herbivores and pathogens. In short-lived model species, R-genes have been shown to be involved in species isolation. Here, we studied more than 400 trees from two natural hybrid zones of the European Populus species Populus alba and Populus tremula for microsatellite markers located in three R-gene clusters, including one cluster situated in the incipient sex chromosome region. The results indicate that all three R-gene clusters present extensive linkage disequilibrium (LD). Outlier tests suggest balancing selection as a potential driver of R-gene...
Subjects
Medical Subject Headings: fungi
free text keywords: [SDV]Life Sciences [q-bio], Forestry, Genetics, Molecular Biology, Horticulture, Genetic diversity, Linkage disequilibrium, Gene flow, Microsatellite, Biology, Interspecific competition, Chromosome regions, Balancing selection, Chromosome
Communities
Agricultural and Food Sciences
Rural Digital Europe
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