Telomere-to-telomere and gap-free reference genome assembly of the kiwifruit Actinidia chinensis.

ABSTRACT: Kiwifruit is an economically and nutritionally important fruit crop with extremely high contents of vitamin C. However, the previously released versions of kiwifruit genomes all have a mass of unanchored or missing regions. Here, we report a highly continuous and completely gap-free reference genome of Actinidia chinensis cv. 'Hongyang', named Hongyang v4.0, which is the first to achieve two de novo haploid-resolved haplotypes, HY4P and HY4A. HY4P and HY4A have a total length of 606.1 and 599.6 Mb, respectively, with almost the entire telomeres and centromeres assembled in each haplotype. In comparison with Hongyang v3.0, the integrity and contiguity of Hongyang v4.0 is markedly improved by filling all unclosed gaps and correcting some misoriented regions, resulting in ~38.6-

SUBMITTER: Yue J 

PROVIDER: S-EPMC9909506 | biostudies-literature | 2023 Feb

REPOSITORIES: biostudies-literature