Researchers Complete Telomere-to-Telomere Genome Assembly
The improved Botrytis cinerea strain B05.10 genome now provides a more comprehensive reference for laboratory research.
Updated on Oct. 25, 2026 in Life Sciences
Scientists have released a new telomere-to-telomere genome assembly for the Botrytis cinerea strain B05.10. This updated version provides a more precise reference by adding eight previously missing telomeric regions.
Why it matters
As a key reference isolate, the improved genome provides researchers with a more accurate tool for investigating Botrytis cinerea. This precision helps standardize studies across global laboratories.
The new assembly successfully integrates eight additional telomeric regions into the existing 2017 sequence. Researchers have now mapped telomeres on every chromosome end except for chromosome 4, which is occupied by the rDNA repeat.
The players
Botrytis cinerea
This is a necrotrophic fungus that serves as a common model organism for plant pathology research.
NCBI
The National Center for Biotechnology Information provides access to biomedical and genomic information through its extensive public databases.
Ensembl-Fungi
This bioinformatics resource provides centralized genomic data specifically curated for fungal species.
The details
Researchers corrected minor errors from the previous 2017 version while extending the sequence to include nearly all chromosome ends. The unannotated assembly has been deposited in the NCBI database for immediate access.
Timeline
2017: The previous version of the genome assembly was created.
October 2026: The improved genome assembly was released.
The Big Picture
This study follows a pattern set by the Telomere-to-Telomere (T2T) Consortium protocols to achieve gapless, high-resolution genome assemblies. It represents a shift toward higher standards of genomic completeness in fungal research, replacing fragmented draft sequences.
Researchers working with Botrytis cinerea can now utilize this high-accuracy sequence to better identify and analyze fungal gene functions. This improved reference will likely increase the reliability of future experiments relying on this strain.
The takeaway
Achieving telomere-to-telomere coverage significantly enhances the utility of model organisms in biological research. Scientists can now access these improved resources to refine their understanding of fungal genetics.
What happens next
The project team intends to host the assembly on Ensembl-Fungi following the completion of structural gene model curation.
Further reading
For more information on current genomic research, visit the Life Sciences section.
More information
View the study genome assembly publication for technical details.
