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Updated: May 29, 2025

High-throughput Physical Mapping of Chromosomes using Automated in situ Hybridization
Published on: June 28, 2012
Three annotated chromosome-level de novo genome assemblies of Lomentospora prolificans provide evidence for a
Abstract:
Lomentospora prolificans is a fungal pathogen responsible for serious, often fatal, illness in patients with compromised immune systems. Treatment is rarely successful because L. prolificans is inherently resistant to all major classes of antifungal drugs. In this study we publish three chromosome-level de novo genome assemblies, including the first complete-level assembly of L. prolificans , along with genome annotations. The L. prolificans genome is packaged in 11 nuclear chromosomes and one mitochondrial chromosome, has 36.7-37.1 Mb, and encodes for a putative 7357-7640 genes. The length and composition of contigs in one stain varied from those of the other two strains, supporting the hypothesis that a chromosomal translocation took place. These assemblies were confirmed with pulsed-field gel electrophoresis. The availability of more complete genomes will hopefully help the search for new antifungal drugs and provides insights into the evolutionary history of this pathogenic fungus.
Insights
Lomentospora prolificans, a drug-resistant fungus causing severe infections, has had its genome fully sequenced. This breakthrough offers hope for developing new antifungal treatments and understanding its evolution.
Area of Science:
- Mycology
- Genomics
- Infectious Diseases
Background:
- Lomentospora prolificans is a fungal pathogen causing severe, often fatal, infections in immunocompromised individuals.
- Existing antifungal drugs are largely ineffective against L. prolificans due to inherent resistance.
Purpose of the Study:
- To generate chromosome-level de novo genome assemblies for Lomentospora prolificans.
- To provide the first complete genome assembly of L. prolificans.
- To aid in the discovery of novel antifungal drugs and understand fungal evolution.
Main Methods:
- Chromosome-level de novo genome assembly of three L. prolificans strains.
- Genome annotation.
- Pulsed-field gel electrophoresis for assembly confirmation.
Main Results:
- The first complete genome assembly of L. prolificans was achieved.
- The genome comprises 11 nuclear and 1 mitochondrial chromosome, totaling 36.7-37.1 Mb.
- A chromosomal translocation was identified in one strain, supported by contig variations.
Conclusions:
- The availability of complete L. prolificans genomes is crucial for antifungal drug development.
- These genomic resources provide insights into the evolutionary history of this challenging pathogen.
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