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Related Experiment Videos

Transposable elements and the plant pan-genomes.

Michele Morgante1, Emanuele De Paoli, Slobodanka Radovic

  • 1Dipartimento di Scienze Agrarie ed Ambientali, Universita' di Udine, Via delle Scienze 208, I-33100 Udine, Italy. michele.morgante@uniud.it

Current Opinion in Plant Biology
|February 16, 2007
PubMed
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Transposable elements drive significant genetic variation within and between grass species, highlighting the importance of the plant pan-genome concept. This includes core and dispensable genomes, crucial for understanding genetic diversity.

Area of Science:

  • Genomics
  • Evolutionary Biology
  • Plant Science

Background:

  • Comparative genome sequencing reveals extensive variation in grass genomes.
  • Transposable elements (TEs) are major drivers of this variation in intergenic and genic regions.
  • This variation exists both between species and within individuals of the same species.

Purpose of the Study:

  • Introduce the plant pan-genome concept, encompassing core and dispensable genomic features.
  • Investigate the composition, origin, and function of the dispensable genome.
  • Advance the understanding of genetic diversity and phenotypic variation generation.

Main Methods:

  • Comparative sequencing of multiple grass genomes.
  • Analysis of transposable element distribution and impact.

Related Experiment Videos

  • Conceptual framework development for the plant pan-genome.

    • Main Results:

    • Transposable elements account for substantial genomic variation in grasses.
    • A single genome sequence may not represent a species' full genomic content.
    • The concept of a plant pan-genome, including core and dispensable fractions, is proposed.

    Conclusions:

    • The dispensable genome, shaped by TEs, is critical for genetic diversity.
    • Understanding the dispensable genome is key to deciphering evolutionary processes.
    • Emerging insights into transcriptional regulation suggest functional roles for the dispensable genome.