Compact genomes and complex evolution in the genus Brachypodium

Elzbieta Wolny, Karolina Lesniewska, Robert Hasterok, Timothy Langdon

Allbwn ymchwil: Cyfraniad at gyfnodolynErthygladolygiad gan gymheiriaid


The temperate annual grass Brachypodium distachyon is a diploid species with a chromosome base number of 5. It is strikingly different from other Eurasian species of the genus, which are perennial and often polyploid, with the diploids typically having base numbers of 8 or 9. Previously, phylogenies indicated that B. distachyon split from the other species early in the evolution of the genus, while its genome sequence revealed that extensive synteny on a chromosomal scale had been maintained with rice, a tropical grass with a base number of 12. Here we show evidence that B. distachyon may have a homoploid origin, involving ancestral interspecific hybridisation, although it does not appear to be a component of any of the perennial Eurasian allopolyploids. Using a cytogenetic approach, we show that dysploidy in Brachypodium has not followed a simple progression.
Iaith wreiddiolSaesneg
Tudalennau (o-i)199-212
Nifer y tudalennau14
Rhif cyhoeddi2
Dynodwyr Gwrthrych Digidol (DOIs)
StatwsCyhoeddwyd - 01 Ebr 2011

Ôl bys

Gweld gwybodaeth am bynciau ymchwil 'Compact genomes and complex evolution in the genus Brachypodium'. Gyda’i gilydd, maen nhw’n ffurfio ôl bys unigryw.

Dyfynnu hyn