High-Quality Genome Assemblies of Two Prototheca wickerhamii Strains

Lihua Fang1, Jian Guo2, Qing Ning3

  • 1Department of Endocrinology, Shenzhen Longhua District Central Hospital, Shenzhen, 518110, China.

Scientific Data
|March 10, 2026
PubMed

Insights

High-quality genome assemblies for Prototheca wickerhamii strains Pw26 and PwS1 were generated. This provides a valuable resource for understanding this opportunistic pathogen and its genomic features.

Area of Science:

  • Microbiology
  • Genomics
  • Medical Mycology

Background:

  • Prototheca wickerhamii is a non-photosynthetic microalgal species.
  • This species is known to cause opportunistic human infections.
  • Understanding its genomic characteristics is vital for medical and symbiosis research.

Purpose of the Study:

  • To generate high-quality genome assemblies for two strains of Prototheca wickerhamii (Pw26 and PwS1).
  • To provide a genomic resource for comparative genomics and functional studies of P. wickerhamii.

Main Methods:

  • Genome sequencing using PacBio HiFi reads.
  • Assembly and evaluation of genome completeness and accuracy using BUSCO analysis.
  • Comparative genomic analysis of genome size, gene content, and repeat sequences.

Main Results:

  • High-quality genome assemblies for Pw26 (17.8 MB) and PwS1 (17.4 MB) were generated.
  • Both genomes exhibited a GC content of 63.5% and high contig N50 values (1.6 MB).
  • Comparative analysis revealed high similarity in genome size and alignment, with Pw26 having slightly more protein-coding genes.

Conclusions:

  • The generated genome assemblies are valuable resources for Prototheca wickerhamii research.
  • Detailed genomic characterization facilitates further studies into pathogenic mechanisms.
  • These findings support comparative genomics and functional exploration of this microalgal species.

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