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Lineage-specific accelerated sequences underlying primate evolution
Xupeng Bi1, Long Zhou1, Jin-Jin Zhang2
1Centre for Evolutionary & Organismal Biology, and Women's Hospital, Zhejiang University School of Medicine, Hangzhou 310058, China.
Science Advances
|June 1, 2023
Summary
Researchers mapped primate lineage-specific accelerated regions (LinARs) to understand phenotypic innovation. This comparative genomics study identified novel human LinARs linked to brain development and uncovered adaptations in gibbons and Colobinae primates.
Area of Science:
- Evolutionary genomics
- Comparative genomics
- Primate evolution
Background:
- Phenotypic innovation is crucial for understanding evolutionary divergence.
- Comparative genomic studies are essential for identifying genetic changes driving evolutionary novelty.
- Lineage-specific accelerated regions (LinARs) are key indicators of adaptive evolution.
Purpose of the Study:
- To investigate the evolutionary landscape of LinARs across 49 primate species.
- To identify novel LinARs associated with human-specific traits, such as brain development.
- To explore the role of LinARs in phenotypic innovation and adaptation in various primate lineages.
Main Methods:
- Comparative genomic analysis of 49 primate species.
- Detection and mapping of lineage-specific accelerated regions (LinARs).
- Functional experimentation to assess the role of identified LinARs.
Main Results:
- Dense primate taxa sampling improved LinAR detection accuracy.
- Novel human LinARs associated with brain development and disease were discovered.
- Gibbon LinARs potentially regulate limb development, and Colobinae LinARs are linked to metabolite detoxification.
Conclusions:
- LinARs play a significant role in primate phenotypic innovation and adaptation.
- This study provides detailed maps of LinARs across primate lineages.
- The findings broaden the understanding of functional genomics in primate evolution.
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