LTR retrotransposon dynamics in the evolution of the olive (Olea europaea) genome.

ABSTRACT: Improved knowledge of genome composition, especially of its repetitive component, generates important information for both theoretical and applied research. The olive repetitive component is made up of two main classes of sequences: tandem repeats and retrotransposons (REs). In this study, we provide characterization of a sample of 254 unique full-length long terminal repeat (LTR) REs. In the sample, Ty1-Copia elements were more numerous than Ty3-Gypsy elements. Mapping a large set of Illumina whole-genome shotgun reads onto the identified retroelement set revealed that Gypsy elements are more redundant than Copia elements. The insertion time of intact retroelements was estimated based on sister LTR's divergence. Although some elements inserted relatively recently, the mean insertion age o

SUBMITTER: Barghini E 

PROVIDER: S-EPMC4379980 | biostudies-literature | 2015 Feb

REPOSITORIES: biostudies-literature