Back to Search
Start Over
Genome assemblies of 11 bamboo species highlight diversification induced by dynamic subgenome dominance.
- Source :
-
Nature genetics [Nat Genet] 2024 Apr; Vol. 56 (4), pp. 710-720. Date of Electronic Publication: 2024 Mar 15. - Publication Year :
- 2024
-
Abstract
- Polyploidy (genome duplication) is a pivotal force in evolution. However, the interactions between parental genomes in a polyploid nucleus, frequently involving subgenome dominance, are poorly understood. Here we showcase analyses of a bamboo system (Poaceae: Bambusoideae) comprising a series of lineages from diploid (herbaceous) to tetraploid and hexaploid (woody), with 11 chromosome-level de novo genome assemblies and 476 transcriptome samples. We find that woody bamboo subgenomes exhibit stunning karyotype stability, with parallel subgenome dominance in the two tetraploid clades and a gradual shift of dominance in the hexaploid clade. Allopolyploidization and subgenome dominance have shaped the evolution of tree-like lignified culms, rapid growth and synchronous flowering characteristic of woody bamboos as large grasses. Our work provides insights into genome dominance in a remarkable polyploid system, including its dependence on genomic context and its ability to switch which subgenomes are dominant over evolutionary time.<br /> (© 2024. The Author(s).)
Details
- Language :
- English
- ISSN :
- 1546-1718
- Volume :
- 56
- Issue :
- 4
- Database :
- MEDLINE
- Journal :
- Nature genetics
- Publication Type :
- Academic Journal
- Accession number :
- 38491323
- Full Text :
- https://doi.org/10.1038/s41588-024-01683-0