Effects of environmental pollution on the rDNAomics of Amazonian fish.
COI
Heterochromatin
Human activity
Repetitive DNA
Ribosomal gene
Journal
Environmental pollution (Barking, Essex : 1987)
ISSN: 1873-6424
Titre abrégé: Environ Pollut
Pays: England
ID NLM: 8804476
Informations de publication
Date de publication:
Sep 2019
Sep 2019
Historique:
received:
20
10
2018
revised:
21
05
2019
accepted:
21
05
2019
pubmed:
31
5
2019
medline:
2
11
2019
entrez:
31
5
2019
Statut:
ppublish
Résumé
Pollution is a growing environmental problem throughout the world, and the impact of human activities on biodiversity and the genetic variability of natural populations is increasingly preoccupying, given that adaptive processes depend on this variability, in particular that found in the repetitive DNA. In the present study, the mitochondrial DNA (COI) and the distribution of repetitive DNA sequences (18S and 5S rDNA) in the fish genome were analysed in fish populations inhabiting both polluted and unpolluted waters in the northern Amazon basin. The results indicate highly complex ribosomal sequences in the fish genome from the polluted environment because these sequences are involved primarily in the maintenance of genome integrity, mediated by a systematic increase in the number of copies of the ribosomal DNA in response to changes in environmental conditions.
Identifiants
pubmed: 31146233
pii: S0269-7491(18)34728-6
doi: 10.1016/j.envpol.2019.05.112
pii:
doi:
Substances chimiques
DNA, Mitochondrial
0
DNA, Ribosomal
0
RNA, Ribosomal, 18S
0
RNA, Ribosomal, 5S
0
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM
Pagination
180-187Informations de copyright
Copyright © 2019 Elsevier Ltd. All rights reserved.