The analysis of variation in plants has revealed that their genomes are characterised by high levels of structural variation, consisting of both smaller insertion/deletions, mostly due to recent insertions of transposable elements, and of larger insertion/deletion similar to those termed in humans Copy Number Variants (CNVs). These observations indicate that a single genome sequence might not reflect the entire genomic complement of a species, and prompted us to introduce the concept of the plant pan-genome.
Morgante, M. (2013). Structural variation and the plant pan genomes. EMBnet.Journal, 19(A), 11. https://doi.org/10.14806/ej.19.a.682