Genome-Wide Survey and Comparative Analysis of Long Terminal Repeat (LTR) Retrotransposon Families in Four Gossypium Species.

ABSTRACT: Long terminal repeat (LTR) retrotransposon is the most abundant DNA component and is largely responsible for plant genome size variation. Although it has been studied in plant species, very limited data is available for cotton, the most important fiber and texture crop. In this study, we performed a comprehensive analysis of LTR retrotransposon families across four cotton species. In tetraploid Gossypium species, LTR retrotransposon families from the progenitor D genome had more copies in D-subgenome, and families from the progenitor A genome had more copies in A-subgenome. Some LTR retrotransposon families that insert after polyploid formation may still distribute the majority of its copies in one of the subgenomes. The data also shows that families of 10~200 copies are abundant and they

SUBMITTER: Liu Z 

PROVIDER: S-EPMC6010443 | biostudies-literature | 2018 Jun

REPOSITORIES: biostudies-literature