A chromosome-scale nuclear genome and complete mitogenome of the bio-control fungus Cordyceps cateniannulata.

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Citation abstract

Cordyceps cateniannulata, a recently characterized entomopathogenic fungus, has been employed in biological control, plant disease management, and growth promotion. In this study, the complete genomic sequences of C. cateniannulata were generated using BGI, PacBio, and Hi-C sequencing platforms. The nuclear genome spans 32.71 Mb, comprising seven pseudochromosomes (chromosome-scale scaffolds) with an N50 length of 4,790,175 bp and a guanine-cytosine content of 53.82%. For the first time, a fully assembled mitochondrial genome of 24,712 bp and a ribosomal DNA tandem repeat sequence of 7,974 bp were obtained. Furthermore, after meticulous annotation and manual refinement of structural features, 10,744 protein-coding genes and 156 non-coding RNAs were identified. This study has produced the high-quality whole-genome map of the C. cateniannulata, offering substantial theoretical significance and application potential for the innovative exploitation of Cordyceps fungal germplasm resources. Additionally, it provides novel perspectives on the evolutionary trajectory, infection strategies, and ecological adaptability of entomopathogenic fungi.