Dipterocarpoidae genomics reveal their demography and adaptations to Asian rainforests

Rong Wang, Chao Nan Liu, Simon T. Segar, Yu Ting Jiang, Kai Jian Zhang, Kai Jiang, Gang Wang, Jing Cai, Lu Fan Chen, Shan Chen, Jing Cheng, Stephen G. Compton, Jun Yin Deng, Yuan Yuan Ding, Fang K. Du, Xiao Di Hu, Xing Hua Hu, Ling Kang, Dong Hai Li, Ling LuYuan Yuan Li, Liang Tang, Xin Tong, Zheng Shi Wang, Wei Wei Xu, Yang Yang, Run Guo Zang, Zhuo Xin Zu, Yuan Ye Zhang, Xiao Yong Chen

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5 引用 (Scopus)

摘要

Dipterocarpoideae species form the emergent layer of Asian rainforests. They are the indicator species for Asian rainforest distribution, but they are severely threatened. Here, to understand their adaptation and population decline, we assemble high-quality genomes of seven Dipterocarpoideae species including two autotetraploid species. We estimate the divergence time between Dipterocarpoideae and Malvaceae and within Dipterocarpoideae to be 108.2 (97.8‒118.2) and 88.4 (77.7‒102.9) million years ago, and we identify a whole genome duplication event preceding dipterocarp lineage diversification. We find several genes that showed a signature of selection, likely associated with the adaptation to Asian rainforests. By resequencing of two endangered species, we detect an expansion of effective population size after the last glacial period and a recent sharp decline coinciding with the history of local human activities. Our findings contribute to understanding the diversification and adaptation of dipterocarps and highlight anthropogenic disturbances as a major factor in their endangered status.

源语言英语
文章编号1683
期刊Nature Communications
15
1
DOI
出版状态已出版 - 12月 2024

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