159: Short Reads, Big Biodiversity: The Untapped Potential of Genome Skimming

Bleidorn C et al., Trends in Genetics - This episode examines a Trends in Genetics review arguing that short-read shotgun sequencing and genome skimming remain powerful, cost-effective tools for biodiversity research. The authors highlight applications from species identification and biomass estimation to phylogenomics and museum-based genomics, and discuss how short reads complement long-read initiatives to meet Global Biodiversity Framework goals. Key terms: short-read sequencing, genome skimming, biodiversity monitoring, museum genomics, phylogenomics.

Study Highlights:
Emerging short-read platforms are lowering costs and increasing throughput, making large-scale sequencing more accessible. Genome skimming recovers organellar genomes and phylogenetically informative nuclear markers from low-coverage data, and assembly-free methods expand phylogenetic analyses to degraded or low-coverage samples. Short-read data enable accurate estimation of genome size and repeat content from skimmed datasets, and museum collections offer a rich source to fill taxonomic and genomic gaps for biodiversity monitoring. Together, these approaches support scalable monitoring and reference database building aligned with the GBF.

Conclusion:
Short-read shotgun sequencing, especially genome skimming and assembly-free analyses, remains a practical and scalable approach to generate genomic resources across taxa, complement long-read reference genomes, and accelerate biodiversity monitoring, phylogenomics, and conservation efforts under the Global Biodiversity Framework.

Music:
Enjoy the music based on this article at the end of the episode.

Article title:
The untapped potential of short-read sequencing in biodiversity research

First author:
Bleidorn C

Journal:
Trends in Genetics

DOI:
10.1016/j.tig.2025.09.001

Reference:
Bleidorn C, Sandberg F, Martin S, Vogler AP, Podsiadlowski L. The untapped potential of short-read sequencing in biodiversity research. Trends in Genetics. 2025. https://doi.org/10.1016/j.tig.2025.09.001

License:
This episode is based on an open-access article published under the Creative Commons Attribution 4.0 International License (CC BY 4.0) – https://creativecommons.org/licenses/by/4.0/

Support:
Base by Base is independent and ad-free — no sponsors, no paywall. If an episode was worth your time, chip in and keep the papers audited and the original songs coming:
❤️ Support monthly: https://buy.stripe.com/cNifZhclVebvagk2JDgEg01
☕ One-time donation: https://donate.stripe.com/7sY4gz71B2sN3RWac5gEg00
More at basebybase.com

On PaperCast Base by Base you'll discover the latest in genomics, functional genomics, structural genomics, and proteomics.

Episode link: https://basebybase.com/episodes/the-untapped-potential-of-shortread-sequencing-in-biodiversity-research