AI Article Synopsis
- Transposable elements significantly impact genome evolution and adaptability across various organisms, responding to environmental stresses.
- Cytogenetic analysis of natural fish populations revealed differences in transposable element behavior based on environmental conditions, such as pollution levels.
- An increase in Rex transposable elements was noted in polluted environments, suggesting ongoing adaptive evolution in those populations.
Article Abstract
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.
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| http://dx.doi.org/10.1159/000507104 | DOI Listing |
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