New genomic and transposable element annotation of the microsporidian parasite Anncaliia algerae
Abstract
Anncaliia algerae Undeen is an obligate intracellular microsporidian parasite with an unusually broad host range and a genome enriched in transposable elements (TEs). Using PacBio HiFi sequencing and transcriptomic support, we generated a near chromosome-level assembly of the A. algerae Undeen strain. The haploid genome spans 11.78 Mb in 17 contigs and contains 2705 protein-coding genes. This high-quality assembly provides a detailed view of genome architecture and ploidy. Remarkably, TEs occupy about 24% of the genome and are represented by 4972 copies distributed across 260 families, highlighting exceptional diversity. Among these, Merlin DNA transposons and Ty3 LTR retrotransposons are the most abundant, while other TE classes occur at lower frequencies. This improved genome assembly and annotation provide a robust framework for future studies of genome evolution, TE dynamics, and host adaptation in A. algerae.
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BibTeX
@article{akossi2026genomic,
title = {{New genomic and transposable element annotation of the microsporidian parasite Anncaliia algerae}},
author = {Reginald Florian Akossi and Lou Rochette and Emmanuelle Lerat and Hicham El Alaoui and Damien Courtine and Jérémy Tournayre and Frédéric Delbac and Eric Peyretaillade and Ivan Wawrzyniak},
journal = {Genomics},
year = {2026},
month = sep,
doi = {10.1016/j.ygeno.2026.111322},
url = {https://hal.science/hal-05781129v1},
note = {CC BY 4.0},
}
RIS
TY - JOUR
TI - New genomic and transposable element annotation of the microsporidian parasite Anncaliia algerae
AU - Reginald Florian Akossi
AU - Lou Rochette
AU - Emmanuelle Lerat
AU - Hicham El Alaoui
AU - Damien Courtine
AU - Jérémy Tournayre
AU - Frédéric Delbac
AU - Eric Peyretaillade
AU - Ivan Wawrzyniak
PY - 2026
DA - 2026/09/19
JO - Genomics
DO - 10.1016/j.ygeno.2026.111322
UR - https://hal.science/hal-05781129v1
AB - Anncaliia algerae Undeen is an obligate intracellular microsporidian parasite with an unusually broad host range and a genome enriched in transposable elements (TEs). Using PacBio HiFi sequencing and transcriptomic support, we generated a near chromosome-level assembly of the A. algerae Undeen strain. The haploid genome spans 11.78 Mb in 17 contigs and contains 2705 protein-coding genes. This high-quality assembly provides a detailed view of genome architecture and ploidy. Remarkably, TEs occupy about 24% of the genome and are represented by 4972 copies distributed across 260 families, highlighting exceptional diversity. Among these, Merlin DNA transposons and Ty3 LTR retrotransposons are the most abundant, while other TE classes occur at lower frequencies. This improved genome assembly and annotation provide a robust framework for future studies of genome evolution, TE dynamics, and host adaptation in A. algerae.
SN - 0888-7543
SN - 1089-8646
ER -