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

Chromosome-level, haplotype-resolved genome assembly of Greenland scurvy-grass (Cochlearia groenlandica) spans two pseudo-haplotypes (322 Mb and 295 Mb) and reveals centromeric satellite arrays covering up to half of some chromosomes.

• Why it matters: Centromeric satellite organization is often poorly resolved, and chromosome-scale assemblies are needed to map where these repeats begin and end in Cochlearia groenlandica.
• What they did: The team generated a chromosome-level, haplotype-resolved assembly with 7 chromosomes per pseudo-haplotype and assessed completeness using BUSCO (97.8% in each haplotype).
• The result: They annotated 34,213 and 29,684 protein-coding genes in the two haplotypes and found centromeric satellite arrays with extensive coverage, though functional boundaries remain undetermined.

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