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bioRxiv · 10.64898/2026.11.05.764761

Chromosome-level genome assembly of Greenland scurvy-grass (Cochlearia groenlandica) reveals extensive centromeric satellite arrays

Torresen, O. K.·Brysting, A. K.·Danneels, B.·Sandean, R.·Kollias, S.·Ferrari, G.·Tooming-Klunderud, A.·Yant, L.·Jakobsen, K. S.
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Abstract

We present a chromosome-level, haplotype-resolved genome assembly from Greenland scurvy-grass (Cochlearia groenlandica). The assembly comprises two pseudo-haplotypes of 322 Mb and 295 Mb, with 89.7% and 95.6% respectively, each scaffolded into 7 chromosomes. Assembly completeness is high (BUSCO 97.8% in each haplotype), with 34,213 and 29,684 annotated protein-coding genes for haplotypes one and two, respectively. The chromosomes contain extensive centromeric satellite arrays that cover up to half of some chromosomes. Their precise functional boundaries remain undetermined.

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Torresen, O. K., Brysting, A. K., Danneels, B., Sandean, R., Kollias, S., Ferrari, G., Tooming-Klunderud, A., Yant, L., Jakobsen, K. S.. 2026-11-09. Chromosome-level genome assembly of Greenland scurvy-grass (Cochlearia groenlandica) reveals extensive centromeric satellite arrays. https://doi.org/10.64898/2026.11.05.764761

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