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Reconstructing the genome of the most recent common ancestor of flowering plants [Nature Genetics]

Keywords : genomics, plant genetics

par Frédéric Magné - publié le

We describe here the reconstruction of the genome of the most recent common ancestor (MRCA) of modern monocots and eudicots, accounting for 95% of extant angiosperms, with its potential repertoire of 22,899 ancestral genes conserved in present-day crops. The MRCA provides a starting point for deciphering the reticulated evolutionary plasticity between species (rapidly versus slowly evolving lineages), subgenomes (pre- versus post-duplication blocks), genomic compartments (stable versus labile loci), genes (ancestral versus species-specific genes) and functions (gained versus lost ontologies), the key mutational forces driving the success of polyploidy in crops.(...)

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