A synteny-based draft genome sequence of the forage grassLolium perenne

Stephen L. Byrne, Istvan Nagy, Matthias Pfeifer, Ian Armstead, Suresh Swain, Bruno Studer, Klaus Mayer, Jacqueline D. Campbell, Adrian Czaban, Stephan Hentrup, Frank Panitz, Christian Bendixen (+3 others)
2015 The Plant Journal  
Here we report the draft genome sequence of perennial ryegrass (Lolium perenne), an economically important forage and turf grass species that is widely cultivated in temperate regions worldwide. It is classified along with wheat, barley, oats and Brachypodium distachyon in the Pooideae sub-family of the grass family (Poaceae). Transcriptome data was used to identify 28 455 gene models, and we utilized macro-co-linearity between perennial ryegrass and barley, and synteny within the grass family,
more » ... to establish a synteny-based linear gene order. The gametophytic self-incompatibility mechanism enables the pistil of a plant to reject self-pollen and therefore promote out-crossing. We have used the sequence assembly to characterize transcriptional changes in the stigma during pollination with both compatible and incompatible pollen. Characterization of the pollen transcriptome identified homologs to pollen allergens from a range of species, many of which were expressed to very high levels in mature pollen grains, and are potentially involved in the selfincompatibility mechanism. The genome sequence provides a valuable resource for future breeding efforts based on genomic prediction, and will accelerate the development of new varieties for more productive grasslands.
doi:10.1111/tpj.13037 pmid:26408275 fatcat:cm4dqzkh6rczlhbzuldbghzvw4