The Clausena lansium (Wampee) genome reveal new insights into the carbazole alkaloids biosynthesis pathway.
2021
Abstract Clausena lansium (Lour.) Skeels (Rutaceae), recognized as wampee, is a widely distributed fruit tree which is utilized as a folk-medicine for treatment of several common diseases. However, the genomic information about this medicinally important species is still lacking. Therefore, we assembled the first genome of Clausena genus with a total length of 310.51 Mb and scaffold N50 of 2.24 Mb by using 10× Genomics technology. Further annotation revealed a total of 34,419 protein-coding genes, while repetitive elements covered 39.08% (121.36 Mb) of the genome. The Clausena and Citrus genus were found to diverge around 22 MYA, and also shared an ancient whole-genome triplication event with Vitis . Furthermore, multi-tissue transcriptomic analysis enabled the identification of genes involved in the synthesis of carbazole alkaloids . Altogether, these findings provided new insights into the genome evolution of Wampee species and highlighted the possible role of key genes involved in the carbazole alkaloids biosynthetic pathway .
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