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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.
Abstract:
Prototheca wickerhamii is a non-photosynthetic microalgal species that has been implicated in opportunistic human infections. Understanding its genomic features is crucial for both medical applications and symbiosis research. We generated high-quality genome assemblies for two strains of Prototheca wickerhamii, Pw26 and PwS1, using PacBio HiFi reads. The assemblies were evaluated for completeness and accuracy using BUSCO analysis. The assembled genomes for Pw26 and PwS1 were 17.8 MB and 17.4 MB, respectively, with contig N50 values of 1.6 MB. The number of assembled contigs is closely related to the number of chromosomes. The GC content was 63.5% for both genomes. Comparative analysis showed high similarity in genome size and alignment, with Pw26 having slightly more protein-coding genes (46,394) than PwS1 (44,702). Repeat sequences accounted for 6.03% and 4.18% of the genomes in Pw26 and PwS1, respectively. These high-quality genome assemblies provide a valuable resource for comparative genomics and functional exploration of Prototheca wickerhamii. The detailed genomic characterization supports further studies on pathogenic mechanisms.
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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