EARE-1, a Transcriptionally Active Ty1/Copia-Like Retrotransposon Has Colonized the Genome of Excoecaria agallocha through Horizontal Transfer.

ABSTRACT: Long terminal repeat (LTR) retrotransposons constitute the majority of the content of angiosperm genomes, but their evolutionary dynamics remain poorly understood. Here, we report the isolation and characterization of a putative full-length (~9550 bp) Ty1/copia-like retrotransposon in Excoecaria agallocha and its evolution in Euphorbiaceae. The so-called EARE-1 is phylogenetically closely related to RIRE-1 from Oryza australiensis, and has proliferated recently (~7.19 Mya) in the E. agallocha genome. An RT-PCR analysis revealed substantial transcription of EARE-1 in all examined organs (leaves, staminate flowers, pistillate flowers, seeds, and roots) in unstressed E. agallocha plants and indications of elevated expression under stress

SUBMITTER: Huang J 

PROVIDER: S-EPMC5258746 | biostudies-literature | 2017

REPOSITORIES: biostudies-literature