Adaptive evolution of the enigmatic Takakia now facing climate change in Tibet.

Hu, Ruoyang; Li, Xuedong; Hu, Yong; Zhang, Runjie; Lv, Qiang; Zhang, Min; Sheng, Xianyong; Zhao, Feng; Chen, Zhijia; Ding, Yuhan; Yuan, Huan; Wu, Xiaofeng; Xing, Shuang; Yan, Xiaoyu; Bao, Fang; Wan, Ping; Xiao, Lihong; Wang, Xiaoqin; Xiao, Wei; Decker, Eva L; ... (2023). Adaptive evolution of the enigmatic Takakia now facing climate change in Tibet. Cell, 186(17), 3558-3576.e17. Cell Press 10.1016/j.cell.2023.07.003

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The most extreme environments are the most vulnerable to transformation under a rapidly changing climate. These ecosystems harbor some of the most specialized species, which will likely suffer the highest extinction rates. We document the steepest temperature increase (2010-2021) on record at altitudes of above 4,000 m, triggering a decline of the relictual and highly adapted moss Takakia lepidozioides. Its de-novo-sequenced genome with 27,467 protein-coding genes includes distinct adaptations to abiotic stresses and comprises the largest number of fast-evolving genes under positive selection. The uplift of the study site in the last 65 million years has resulted in life-threatening UV-B radiation and drastically reduced temperatures, and we detected several of the molecular adaptations of Takakia to these environmental changes. Surprisingly, specific morphological features likely occurred earlier than 165 mya in much warmer environments. Following nearly 400 million years of evolution and resilience, this species is now facing extinction.

Item Type:

Journal Article (Original Article)

Division/Institute:

04 Faculty of Medicine > Department of Haematology, Oncology, Infectious Diseases, Laboratory Medicine and Hospital Pharmacy (DOLS) > Clinic of Haematology and Central Haematological Laboratory

UniBE Contributor:

Wiedemann, Gertrud

Subjects:

600 Technology > 610 Medicine & health

ISSN:

0092-8674

Publisher:

Cell Press

Language:

English

Submitter:

Pubmed Import

Date Deposited:

15 Aug 2023 15:09

Last Modified:

20 Aug 2023 00:20

Publisher DOI:

10.1016/j.cell.2023.07.003

PubMed ID:

37562403

Uncontrolled Keywords:

DNA repair UV radiation abiotic stress adaptive evolution development fast-evolving genome gene expansion global warming molecular clock paleontology

BORIS DOI:

10.48350/185384

URI:

https://boris.unibe.ch/id/eprint/185384

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