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Tissue Collection of Bats for -Omics Analyses and Primary Cell Culture
Published on: October 23, 2019
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Adaptive functional diversification of lysozyme in insectivorous bats
Yang Liu1, Guimei He1, Huihui Xu1
1Institute of Molecular Ecology and Evolution, East China Normal University, Shanghai, China.
Molecular Biology and Evolution
|August 20, 2014
Summary
Gene duplication created new lysozyme functions in insect-eating bats. Tongue lysozyme duplicates evolved to efficiently break down insect chitin, supporting adaptation to insectivory.
Area of Science:
- Evolutionary biology
- Molecular biology
- Genomics
Background:
- Gene duplication is a key driver of evolutionary innovation.
- Lysozymes, involved in digestion and immunity, show functional diversification.
- Insectivorous bats consume chitinous insects, suggesting a role for chitin-degrading enzymes.
Purpose of the Study:
- Investigate the molecular evolution of chicken-type lysozymes in insectivorous bats.
- Determine if lysozyme gene duplication and adaptation are linked to insectivory.
- Characterize the functional differences between lysozyme duplicates.
Main Methods:
- Comparative genomic analysis of lysozyme genes in Vespertilionidae bats.
- Gene expression analysis in tongue and other tissues of insectivorous bats.
- In vitro functional assays of recombinant lysozyme variants using chitin derivatives.
Main Results:
- Multiple duplication events of chicken-type lysozyme were identified in Vespertilionidae.
- A novel lysozyme copy showed high expression in the tongue of Pipistrellus abramus.
- The tongue-specific lysozyme duplicate exhibited enhanced chitinase-like activity compared to other copies.
Conclusions:
- Chicken-type lysozyme has undergone adaptive evolution in insectivorous bats.
- Lysozyme gene duplication and subsequent functional specialization likely facilitated the evolution of insectivory.
- This study highlights gene duplication as a mechanism for adapting to specific diets.
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