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Area of Science:

  • Paleogenomics
  • Evolutionary Biology
  • Genetics

Background:

  • Genomic data from contemporary plant samples are foundational for studying species evolution and migration.
  • Ancient plant samples offer insights into allele sequences and distributions dating back to the mid-Holocene.
  • Nuclear DNA from ancient wood has historically been inaccessible for genomic studies.

Purpose of the Study:

  • To present the first resequenced nuclear genomes from ancient oak wood.
  • To enable the investigation of species adaptation, migration, divergence, and hybridization in the deep past.
  • To usher in a new era of paleogenomics for studying Holocene tree histories.

Main Methods:

  • Resequencing of nuclear genomes from ancient oak wood samples.
  • Dating of samples to the 15th century and over 3500 years ago.

Main Results:

  • Successfully obtained and resequenced nuclear genomes from ancient oak wood.
  • Demonstrated the feasibility of accessing ancient nuclear DNA from wood for paleogenomic analysis.

Conclusions:

  • Ancient tree genomes provide unprecedented opportunities to study long-term evolutionary processes.
  • This breakthrough paves the way for extensive paleogenomic research on Holocene tree histories.
  • Future studies can now explore deep-time adaptation and migration patterns in trees.