Transposable DNA Elements in Amazonian Fish: From Genome Enlargement to Genetic Adaptation to Stressful Environments
| Autor: | Francijara Araújo da Silva, Eliana Feldberg, Erika Milena Corrêa Guimarães, Natália Dayane Moura Carvalho, Gislene Almeida Carvalho-Zilse, Alex M.V. Ferreira, Carlos Henrique Schneider, Maria Claudia Gross |
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| Rok vydání: | 2020 |
| Předmět: |
0106 biological sciences
Transposable element Genome evolution Range (biology) viruses Retrotransposon Biology 010603 evolutionary biology 01 natural sciences Genome Chromosomes Evolution Molecular Transposition (music) 03 medical and health sciences Rivers Stress Physiological Genetics Animals Molecular Biology Genetics (clinical) 030304 developmental biology Abiotic component 0303 health sciences Fishes biochemical phenomena metabolism and nutrition Adaptation Physiological Evolutionary biology DNA Transposable Elements Mobile genetic elements |
| Zdroj: | Cytogenetic and Genome Research. 160:148-155 |
| ISSN: | 1424-859X 1424-8581 |
| DOI: | 10.1159/000507104 |
| Popis: | Transposable elements have driven genome evolution and plasticity in many ways across a range of organisms. Different types of biotic and abiotic stresses can stimulate the expression or transposition of these mobile elements. Here, we cytogenetically analyzed natural fish populations of the same species living under different environmental conditions to test the influence and organization of transposable elements in their genome. Differential behavior was observed for the markers Rex 1, Rex 3, and Rex 6 in the chromosomes of individuals of the same species but coming from different environments (polluted and unpolluted). An increase in the number of Rex transposable elements in the chromosomes and their influence on the genome of populations living in a polluted environment indicates that they must be under constant adaptive evolution. |
| Databáze: | OpenAIRE |
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