Origin and genome evolution of chromosomal races in the polyploid complex of Prospero autumnale (Hyacinthaceae)
The project focuses on an investigation of the cytological features of the highly chromosomally variable genus Prospero employing repetitive DNA analysis and the interpretation of repeat landscape changes in a sound phylogenetic context. This research addresses evolutionary questions concerning the origins, mechanisms, directions and frequencies of chromosomal change. The main, long-term aim is to understand the role of chromosomal change in formation of distinct intraspecific lineages, diversification and speciation both on the diploid and polyploid level.
Publications
Jang T-S, Parker JS, Emadzade K, Temsch EM, Leitch AR, Weiss-Schneeweiss H (2018) Multiple origins and nested cycles of hybridization result in high tetraploid diversity in the monocot Prospero. Frontiers in Plant Science, 9: e433.
Jang T-S, Parker J, Weiss-Schneeweiss H (2016) Structural polymorphisms and distinct genomic composition suggest recurrent origin and ongoing evolution of B chromosomes in the Prospero autumnale complex (Hyacinthaceae). New Phytologist 210: 669-679.
Weiss-Schneeweiss H, Leitch AR, McCann J, Jang T-S, Macas J (2015) Employing next generation sequencing to explore the repeat landscape of the plant genome. in: Elvira Hörandl & Marc Appelhans (eds.): Next Generation Sequencing in Plant Systematics. Regnum Vegetabile 157 (ISSN 0080-0694). Koeltz Scientific Books, Königstein, Germany.
Jang T-S, Weiss-Schneeweiss H (2015) Formamide-free genomic in situ hybridization (ff-GISH) allows unambiguous discrimination of highly similar parental genomes in diploid hybrids and allopolyploids. Cytogenetic and Genome Research 146: 325–331.
Emadzade K, Jang TS, Macas J, Kovarík A, Novák P, Parker J, Weiss-Schneeweiss H (2014) Differential amplification of satellite PaB6 in chromosomally hyper-variable Prospero autumnale complex (Hyacinthaceae). Annals of Botany 114: 1597–1608.
Jang T-S, Emadzade K, Parker J, Temsch EM, Leitch AR, Speta F, Weiss-Schneeweiss H (2013) Chromosomal diversification and karyotype evolution of diploids in the cytologically diverse genus Prospero (Hyacinthaceae). BMC Evolutionary Biology 13: 136.
Weiss-Schneeweiss H, Schneeweiss GM (2013) Karyotype diversity and evolutionary trends in angiosperms. In: Plant Genome Diversity Volume 2. Physical Structure and Evolution of Plant Genomes; Leitch I.J., Greilhuber J., Dolezel J., Wendel J.F. (Eds.). Springer, pp. 209–230.
Jang T-S (2013) Chromosomal evolution in Prospero autumnale complex. PhD Thesis, University of Vienna.