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Duplication of host genes by transposable elements.

Stefan Cerbin1, Ning Jiang1

  • 1Department of Horticulture, 1066 Bogue Street, Michigan State University, East Lansing, MI 48824, USA.

Current Opinion in Genetics & Development
|March 24, 2018
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Summary
This summary is machine-generated.

Transposable elements can duplicate host genes, creating new functional sequences. These gene duplications, particularly those occurring in reproductive tissues, may drive evolutionary innovation.

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Area of Science:

  • Genomics
  • Evolutionary Biology
  • Molecular Biology

Background:

  • Genomic and transcriptome sequencing enables systematic surveys of host gene sequences duplicated by transposable elements.
  • All known transposon superfamilies can duplicate genes or gene fragments across diverse organisms.

Purpose of the Study:

  • To investigate the role of transposable elements in host gene duplication.
  • To understand the functional significance and heritability of transposon-mediated gene duplications.
  • To explore the potential of reproductive tissues as a site for novel gene generation.

Main Methods:

  • Systematic surveys of genomic and transcriptome sequences.
  • Analysis of transposon activity and gene duplication events.
  • Investigation of gene expression patterns in different tissues.

Main Results:

  • Transposable elements frequently duplicate host genes or fragments across a wide range of organisms.
  • A significant portion of these duplicated sequences function as coding or non-coding elements, contributing to molecular and phenotypic innovation.
  • Heritable gene duplications by transposable elements preferentially occur and are expressed in reproductive tissues.

Conclusions:

  • Transposable elements are a significant source of novel genetic material through gene duplication.
  • Reproductive tissues play a crucial role in the heritability and potential functionalization of transposon-generated genes.
  • Transposon-mediated gene duplication is a key mechanism driving evolutionary innovation.