Finding. The grass anthracnose fungus Colletotrichum cereale now has a finished 58 Mb, 13-chromosome genome and a mitochondrial genome to go with it. Three of those chromosomes are accessory, AT-rich, and large (up to 2.71 Mb), among the biggest extras in the genus, stuffed with predicted effectors, CAZymes, and biosynthetic clusters. Other isolates do not share the same extra set. The core still splits the known A and B clades, almost to species-level ANI in places. Mitochondria are present as an assembled organelle genome, not as a story.
Why this paper matters
Fragmented drafts hid chromosome architecture. Accessories this large, this variable, explain how one named species can be a moving target in turf and cereals. A mitochondrial desk files the mtDNA mention and leaves the pathogenologists the rest.
What they actually measured
Chromosome-scale assembly, accessory definition, PAV, clade ANI.
How to read the score
- Confidence is medium-high for the assembly claims.
What to do with it
If you study Colletotrichum or accessory chromosomes, take 6B as the reference. Pull the mitogenome only if you need it; they did not analyze it here. The directional implication is that C. cereale’s pathogenicity toolkit sits on a dynamic, discontinuously shared accessory genome.