TY - JOUR AU - Vijverberg, Kitty AU - Milanovic-Ivanovic, Slavica AU - Bakx-Schotman, Tanja AU - van Dijk, Peter J. PY - 2010 DA - 2010/07/26 TI - Genetic fine-mapping of DIPLOSPOROUS in Taraxacum (dandelion; Asteraceae) indicates a duplicated DIP-gene JO - BMC Plant Biology SP - 154 VL - 10 IS - 1 AB - DIPLOSPOROUS (DIP) is the locus for diplospory in Taraxacum, associated to unreduced female gamete formation in apomicts. Apomicts reproduce clonally through seeds, including apomeiosis, parthenogenesis, and autonomous or pseudogamous endosperm formation. In Taraxacum, diplospory results in first division restitution (FDR) nuclei, and inherits as a dominant, monogenic trait, independent from the other apomixis elements. A preliminary genetic linkage map indicated that the DIP-locus lacks suppression of recombination, which is unique among all other map-based cloning efforts of apomeiosis to date. FDR as well as apomixis as a whole are of interest in plant breeding, allowing for polyploidization and fixation of hybrid vigor, respectively. No dominant FDR or apomixis genes have yet been isolated. Here, we zoom-in to the DIP-locus by largely extending our initial mapping population, and by analyzing (local) suppression of recombination and allele sequence divergence (ASD). SN - 1471-2229 UR - https://doi.org/10.1186/1471-2229-10-154 DO - 10.1186/1471-2229-10-154 ID - Vijverberg2010 ER -