A Closed-Loop Method for Precise Genome Size Estimation Using HiFi Reads

Strategic Insights -

Researchers from Hainan University have developed a novel approach to estimating genome size using HiFi reads, a type of high-fidelity genomic sequencing technology. This method, known as LVgs, leverages the continuity and accuracy of HiFi reads to provide precise genome size estimates, demonstrating high accuracy and robustness across various species, including diploid and polyploid organisms. The researchers' approach also improves upon traditional methods by incorporating steady-value calculations and a high-performance pipeline.

Key Takeaways:

  • The researchers developed a closed-loop method for precise genome size estimation using HiFi reads, called LVgs, which integrates FastK and GenomeScope 2.0.
  • LVgs leverages the continuity and accuracy of HiFi reads to provide precise genome size estimates, demonstrating high accuracy and robustness across various species.
  • The method improves upon traditional methods by incorporating steady-value calculations and a high-performance pipeline.
  • The researchers applied LVgs to various diploid and polyploid species, demonstrating its applicability and accuracy in genus-level species.
  • The LVgs pipeline was developed by integrating FastK and GenomeScope 2.0, leveraging the strengths of both tools.
  • Jianfeng Xing and colleagues developed the LVgs method, which has been published in BMC Genomics.
  • The researchers' work has significant implications for the field of genomics, particularly in the estimation of genome size and its implications for species classification and evolution.

Statistics:

  • The LVgs method was applied to various diploid and polyploid species, achieving high accuracy and robustness in genome size estimation.
  • The method achieved consistent GS predictions across all HiFi-based evaluations, demonstrating high accuracy of the derived limiting values from the regions of GS evaluation convergence during continuous variation of K.
  • The LVgs pipeline was developed by integrating FastK and GenomeScope 2.0, leveraging the strengths of both tools.
  • The research was financially supported by the National Key Research And Development Program of China, the National Natural Science Foundation of China, the Innovational Fund For Scientific And Technological Personnel of Hainan Province, and the Major (Key) Science And Technology Projects in Jinhua City.

Sources:

  • A closed-loop method for precise genome size estimation using HiFi reads. BMC Genomics, 2025, 26(1):1-18. (BMC Genomics - http://bmcgenomics.biomedcentral.com)
  • Life Science Weekly. October 21, 2025; p 1736.