Hybrid origin of Populus tomentosa Carr. identified through genome sequencing and phylogenomic analysis

摘要: Abstract Populus tomentosa is widely distributed and cultivated in the Northern Central China, where it of great economic ecological importance. However, origin P. remains controversial. Here, we used a PacBio+Hi-C+Illumina strategy to sequence assemble its 740.2 Mb (2n) genome. The assembly accounts for greater than 92.1% 800-megabase genome, comprises 38 chromosomes, contains 59,124 annotated protein-coding genes. Phylogenomic analyses elucidated dynamic genome evolution events among closely related white poplars, revealed that comprised two subgenomes, which deomonstrate likely have resulted from hybridization between adenopoda as female, alba var. pyramidalis male, around 3.93 Mya. We also detected structural variations allele-indels across Our study presents high quality well assembled unveils planted tomentosa, provides powerful resource comparative plant biology, breeding, biotechnology.