Physical Map of Brachypodium

Brachypodium distachyon (Brachypodium), commonly called purple false brome, is a grass species native to southern Europe, northern Africa and southwestern Asia east to India. Phylogenetic studies indicated that it is related to the major cereal grain species including wheat, barley, oats, maize, rice, rye, sorghum, and millet. It has many qualities that make it an excellent model organism for functional and comparative genomics research in temperate grasses, cereals, and dedicated biofuel crops such as switchgrass. These attributes include small genome (~355 Mbp) diploid accessions, a series of polyploid accessions, a small physical stature, self-fertility, a short lifecycle, simple growth requirements, and an efficient transformation system. Therefore, although Brachypodium has little or no direct agricultural significance, it also becomes an ideal experimental model organism for understanding the genetic, cellular and molecular biology of temperate grasses.

Brachypodium is emerging as a powerful model with a growing research community. The International Brachypodium Initiative (IBI) held its first genomics meeting and workshop at the PAG XIV conference in San Diego, California in January 2006. The goal of the IBI is to promote the development of Brachypodium as a model system and to develop and distribute genomic, genetic, and bioinformatics resources such as reference genotypes, BAC libraries, BAC-based physical map, genetic markers, mapping populations, and a genome sequence database. A high resolution of BAC-based physical map has many genomics applications, including facilitating analysis of genome structure, comparative genomics, and assembly of the entire genome sequence.

Physical map related resources:

Brachypodium physical map database

Comparison of Brachypodium with rice and sorghum(SyMap)

Comparison of Brachypodium with wheat deletion bins

Other Brachypodium genome resources:

Brachypodium genome resource in USDA-ARS, GGD

Brachypodium sequencing project

Brachypodium T-DNA tagging project

Brachyomics