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. 2010 Sep;123(5):707-14.
doi: 10.1007/s10265-009-0290-0. Epub 2009 Dec 18.

FaRE1: a transcriptionally active Ty1-copia retrotransposon in strawberry

Ping He  1 , Yue Ma, Guiling Zhao, Hongyan Dai, He Li, Linlin Chang, Zhihong Zhang
Affiliations

FaRE1: a transcriptionally active Ty1-copia retrotransposon in strawberry

Ping He et al. J Plant Res. 2010 Sep.

Abstract

Retrotransposons are ubiquitous in the plant kingdom and constitute a large fraction of many plant genomes. Although most retrotransposons from plants were thought to be transcriptionally silent in somatic tissues, evidence of activity under certain conditions is available in some cases. In this study, a complete LTR retrotransposon was isolated from the cultivated strawberry (Fragaria x ananassa) genome using genome walking. The element, named FaRE1, has all the features of a typical Ty1-copia retrotransposon. Its total length was 5,104 bp, comprising a single 3,891 bp open reading frame. It is represented by approximately 96 copies per genome, equivalent to approximately 0.33% of the genome. Transcription of FaRE1 was detected in leaf tissue treated with various phytohormones, such as naphthalene acetic acid, 2,4-dichlorophenoxyacetic acid or abscisic acid . To our knowledge, this is the first report of the isolation of a complete LTR retrotransposon with transcriptional activity in strawberry.

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