Project number: 20-20286S
Project title: Repeatome evolution in plant allopolyploids: An outcome from the diploid-polyploid complex of the Chenopodium album aggregate
Programme: GAČR Standard project
Project coordinator: ČZU
Project partners: Institute of Botany of the Czech Academy of Sciences
Project leader: Mgr. Karol Krak Ph.D.
Contact person: Ing. Michaela Kopřivová Stejskalová, Ph.D.
Project schedule: 2020 - 2022
Total project FES budget: 5 401 000 CZK
Merging two or more genomes in allopolyploid species usually results in extensive modification of the genomes and creates novel expression patterns and regulatory interactions, followed by the development of new phenotypes. One way to define the role of any genomic component is to project its dynamics on the evolution of a known biological system. In this project, we will use Next Generation Sequencing data to analyse the variability of repeatome components (RC) in a phylogenetic context, using as a model the diploid-polyploid Chenopodium album aggregate, with an already known phylogeny. We will test two alternative hypotheses regarding the evolution of RC in allopolyploid taxa having stable genome size. (1) The genomic stasis hypothesis: This predicts almost perfect additivity of the parental RC. (2) The genome re-patterning hypothesis: This predicts rearrangements and display deviations from the expected pattern of parental RC additivity. This study will shed new light on the genomic and chromosomal re-patterning accompanying hybridisation and polyploidisation events.