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Molecular mechanisms of adaptive evolution in wild animals and plants

Journal

SCIENCE CHINA-LIFE SCIENCES
Volume 66, Issue 3, Pages 453-495

Publisher

SCIENCE PRESS
DOI: 10.1007/s11427-022-2233-x

Keywords

adaptive evolution; adaptive trait; coevolution; comparative genomics; convergent evolution; genetic convergence; molecular mechanism; mutualism; parasitism; phenotype convergence

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Wild animals and plants have developed adaptive traits through adaptive evolution, which is crucial for their survival. Understanding the molecular mechanisms of adaptive evolution is important for studying species diversification and inter-species interaction. This study reviews the latest research on adaptive traits, convergent evolution, and coevolution in wild animals and plants, highlighting the advances in molecular mechanisms and the future prospects in evolutionary biology.
Wild animals and plants have developed a variety of adaptive traits driven by adaptive evolution, an important strategy for species survival and persistence. Uncovering the molecular mechanisms of adaptive evolution is the key to understanding species diversification, phenotypic convergence, and inter-species interaction. As the genome sequences of more and more non-model organisms are becoming available, the focus of studies on molecular mechanisms of adaptive evolution has shifted from the candidate gene method to genetic mapping based on genome-wide scanning. In this study, we reviewed the latest research advances in wild animals and plants, focusing on adaptive traits, convergent evolution, and coevolution. Firstly, we focused on the adaptive evolution of morphological, behavioral, and physiological traits. Secondly, we reviewed the phenotypic convergences of life history traits and responding to environmental pressures, and the underlying molecular convergence mechanisms. Thirdly, we summarized the advances of coevolution, including the four main types: mutualism, parasitism, predation and competition. Overall, these latest advances greatly increase our understanding of the underlying molecular mechanisms for diverse adaptive traits and species interaction, demonstrating that the development of evolutionary biology has been greatly accelerated by multi-omics technologies. Finally, we highlighted the emerging trends and future prospects around the above three aspects of adaptive evolution.

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