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Diverse retrotransposon families and an AT-rich satellite DNA revealed in giant genomes of Fritillaria lilies

2010; Oxford University Press; Volume: 107; Issue: 2 Linguagem: Inglês

10.1093/aob/mcq235

1095-8290

Kateřina Ambrožová, Terezie Mandáková, Petr Bureš, Pavel Neumann, Ilia J. Leitch, Andrea Koblížková, Jir̆ı́ Macas, Martin A. Lysák,

Wheat and Barley Genetics and Pathology

Background and AimsThe genus Fritillaria (Liliaceae) comprises species with extremely large genomes (1C = 30 000–127 000 Mb) and a bicontinental distribution. Most North American species (subgenus Liliorhiza) differ from Eurasian Fritillaria species by their distinct phylogenetic position and increased amounts of heterochromatin. This study examined the contribution of major repetitive elements to the genome obesity found in Fritillaria and identified repeats contributing to the heterochromatin arrays in Liliorhiza species.