Chromosome-scale genome assembly of Sauvagesia rhodoleuca (Ochnaceae) provides insights into its genome evolution and demographic history.

ABSTRACT: Sauvagesia rhodoleuca is an endangered species endemic to southern China. Due to human activities, only 6 fragmented populations remain in Guangdong and Guangxi. Despite considerable conservation efforts, its demographic history and evolution remain poorly understood, particularly from a genomic perspective. To address this, we assembled a chromosome-scale genome of S. rhodoleuca using Nanopore long-read sequencing, DNA short-read sequencing, RNA-seq, and Hi-C data. A total of 290.37 Mb of assembled sequences, accounting for 99.76% of the genome, were successfully anchored to 19 pseudo-chromosomes, achieving a BUSCO completeness of 98.40% and a long terminal repeat assembly index of 17.28. Genome annotation identified 26,758 protein-coding genes and 369 tRNA genes. Demographic analysis rev

SUBMITTER: Xiao TW 

PROVIDER: S-EPMC12448743 | biostudies-literature | 2025 Sep

REPOSITORIES: biostudies-literature