Genomic Clues to the Ancestral Flowering Plant

@article{Adams2013GenomicCT,
  title={Genomic Clues to the Ancestral Flowering Plant},
  author={Keith L. Adams},
  journal={Science},
  year={2013},
  volume={342},
  pages={1456 - 1457}
}
  • K. Adams
  • Published 20 December 2013
  • Biology
  • Science
The genome sequence of Amborella trichopoda provides insights into the molecular evolution of flowering plants. [Also see Research Articles by Amborella Genome Project and Rice et al.] Amborella trichopoda is an understory shrub that is endemic to New Caledonia (see the figure). It is an early-diverging flowering plant—most phylogenetic studies indicate that it diverged from the lineage leading to most flowering plants, and it is the single sister species to all other extant angiosperms (1). As… 

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References

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A fusion-compatibility model is proposed to explain the findings, with Amborella capturing whole mitochondria from diverse eukaryotes, followed by mitochondrial fusion (limited mechanistically to green plant mitochondria) and then genome recombination.

Assembly and Validation of the Genome of the Nonmodel Basal Angiosperm Amborella

A strategy that uses NGS, fluorescence in situ hybridization, and whole-genome mapping to assemble a high-quality genome sequence for Amborella trichopoda, a nonmodel species crucial to understanding flowering plant evolution, and are applicable to many other organisms with limited genomic resources.

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Genome structure and phylogenomic analyses indicate that the ancestral Angiosperm was a polyploid with a large constellation of both novel and ancient genes that survived to play key roles in angiosperm biology.

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The rapid radiation of core eudicot lineages that gave rise to nearly 75% of angiosperm species appears to have occurred coincidentally or shortly following the gamma triplication event.