Common name: NA
Scientific name: Brachypodium stace
Chinese name: 短柄花坛
Taxonomy
Angiosperms/Monocotyledoneae/Gramineae/Brachypodium/Brachypodium stace
Overview
Brachypodium stacei is a small, diploid annual grass that is part of a trio of Brachypodium species (B. stacei, B. distachyon and B. hybridum) being developed as a model for polyploid genome evolution and regulation. Interestingly, B. stacei and B. hybridum were originally thought to be polyploid forms of B. distachyon based on their 2n chromosome numbers (B. distachyon 2n=10, B. stacei 2n=20 and B. hybridum 2n=30) and superficial anatomical similarity. However, closer cytogenetic and genomic investigation revealed that B. stacei and B. distachyon were diploids with nearly identical genome sizes and that B. hybridum was an allotetraploid with subgenomes apparently derived from B. distachyon and B. stacei. B. stacei and B. hybridum were formally described as distinct species in 2012. These three species were chosen as a model for polyploidy because all three genomes are compact, all three species are experimentally tractable and it is clear that the subgenomes of B. hybridum came from B. distachyon and B. stacei or their very recent ancestors. Comparison of the B. stacei and the B. distachyon genomes with the soon to be completed B. hybridum genome will provide an unprecedented opportunity to study the evolution of a polyploid genome and the effect of structural variation on gene expression and function.
Genomic information
Choromsome number : 2n=2X=20
Protein coding genes : 36332
Genes assembled on chromosomes : 36332
Total genome size(Mb) : 234
Mapped sequence size(Mb) : 231
Number of scaffolds : 112
Scaffold n50(Mb) : 0.29
Data sources
Date download
genomic.cds: protein.faa: genomic.gff:
