Give-and-take: interactions between DNA transposons and their host plant genomes

Recent genome sequencing efforts have revealed how extensively transposable elements (TEs) have contributed to the shaping of present day plant genomes. DNA transposons associate preferentially with the euchromatic or genic component of plant genomes and have had the opportunity to interact intimate...

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Bibliographic Details
Published inCurrent opinion in genetics & development Vol. 17; no. 6; pp. 486 - 492
Main Authors Dooner, Hugo K, Weil, Clifford F
Format Journal Article
LanguageEnglish
Published England Elsevier Ltd 01.12.2007
Subjects
DNA Transposable Elements - genetics
DNA Transposable Elements - physiology
Epigenesis, Genetic
Gene Rearrangement
Genome, Plant
Medical Education
Models, Genetic
Plants - genetics
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Summary:Recent genome sequencing efforts have revealed how extensively transposable elements (TEs) have contributed to the shaping of present day plant genomes. DNA transposons associate preferentially with the euchromatic or genic component of plant genomes and have had the opportunity to interact intimately with the genes of the plant host. These interactions have resulted in TEs acquiring host sequences, forming chimeric genes through exon shuffling, replacing regulatory sequences, mobilizing genes around the genome, and contributing genes to the host. The close interaction of transposons with genes has also led to the evolution of intricate cellular mechanisms for silencing transposon activity. Transposons have thus become important subjects of study in understanding epigenetic regulation and, in cases where transposons have amplified to high numbers, how to escape that regulation.
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ISSN:0959-437X
1879-0380
DOI:10.1016/j.gde.2007.08.010