Cultivated passion fruit is a fruit tree widely cultivated in southern China, but little is known about its genomics, which seriously restricts the molecular genetics research of passion fruit. In this study, we analyzed the 165.7Mb representative genome sequences. The results showed that the passion fruit genome contained a large number of simple sequence repeats (SSR). Compared to the cassava and peach genomes, the passion fruit genome has 23,053 predicted genes. These genes can be aligned to 282 plant genomes. GO annotation indicated that these genes are involved in metabolic pathways of carbohydrates, organic acids, lipids and other molecules. KEGG pathway enrichment assigned these genes into five major categories and 19 secondary functions. Cluster analysis of gene families showed that 12,767 genes could be clustered into 9,868 gene families and 291 unique gene families. On the evolutionary relationship, the passion fruit is closely related to Populus trichocarpa and Ricinus communis, but the rate of evolution is slower. In summary, this genomic analysis result is informative, and will facilitate the future studies on gene functions of passion fruit.
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