Genomic analysis of Nypa fruticans elucidates its intertidal adaptations and early palm evolution

• DOI: 10.1111/jipb.13625
• Publication Date: 2024-02-19T07:49:25Z
• Authors: Weihong Wu; Xiao Feng; Nan Wang; Shao Shao; Min Liu; Fa Si; Linhao Chen; Chuanfeng Jin; Shaohua Xu; Zixiao Guo; Cairong Zhong; Suhua Shi; Ziwen He
• Keywords: 0303 health sciences; 03 medical and health sciences; Genomics; Arecaceae

ABSTRACT Nypa fruticans (Wurmb), a mangrove palm species with origins dating back to the Late Cretaceous period, is unique for investigating long‐term adaptation strategies intertidal environments and early evolution of palms. Here, we present chromosome‐level genome sequence assembly N. . We integrated genomes other family members comparative genomic analysis, which confirmed that common ancestor all palms experienced whole‐genome duplication event around 89 million years ago, shaping distinctive characteristics observed in this clade. also inferred low mutation rate genome, underwent strong purifying selection evolved slowly, thus contributing its stability over long evolutionary period. Moreover, ancient duplicates were preferentially retained, critical genes having positive selection, enhancing waterlogging tolerance Furthermore, discovered pseudogenization Early Methionine‐labelled 1 ( EM1 ) EM6 underly crypto‐vivipary characteristics, reflecting adaptation. Our study provides valuable insights into history, stability, adaptive palm. results shed light on contribute our understanding dynamics family.