A haplotype-resolved gap-free chromosome assembly of the threatened plant Paradombeya sinensis

Paradombeya sinensis is an ecologically and phylogenetically valuable tree species endemic to southwestern China, yet its genomic resources remain underdeveloped. Here, we present a haplotype-resolved, chromosome-scale genome assembly to address this gap. The assembly spans about 890 Mb with high continuity (contig N50 of 44 Mb) and completeness (99.93% of sequences anchored to 20 pseudo-chromosomes). Gene annotation identified 68,639 genes. This high-quality genome assembly will serve as a fundamental genomic resource to facilitate comprehensive conservation strategies, potential utilization, and definitive phylogenetic placement of this species.