ArticleScientific data2026
High-quality telomere-to-telomere genome assembly of the critically endangered tree Magnolia longipedunculata.
Article in Scientific data, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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6 authors.
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Abstract
Magnolia longipedunculata is a critically endangered tree endemic to southern China, valued for its ornamental flowers but with only 11 known wild individuals. As a member of Magnoliaceae-one of the earliest-diverging angiosperm lineages-it provides an important genomic resource for conservation and investigating early angiosperm evolution. Here, we report a high-quality telomere-to-telomere (T2T) genome assembly of M. longipedunculata generated using PacBio HiFi, Hi-C, Illumina, and RNA-seq data. The 2.16 Gb assembly was anchored onto 19 pseudo-chromosomes, showing high contiguity (contig N50: 54.53 Mb; scaffold N50: 151.43 Mb) and completeness (BUSCO: 96.6%; LAI: 15.21; Merqury QV: 41.70). Repetitive sequences occupy 81.93% of the genome, dominated by long terminal repeat retrotransposons (LTRs, 38.88%). A total of 24,470 protein-coding genes and 29,936 transcripts were annotated, of which 95.93% (28,718 proteins) were functionally characterized. This reference-grade genome provides a critical resource for conservation genetics, genome evolution, and comparative genomics within Magnoliaceae and across basal angiosperms.
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