Impact of diuron and S-metolachlor on the freshwater diatom Gomphonema gracile: Complementarity between fatty acid profiles and different kinds of ecotoxicological impact-endpoints.
Bacillariophyceae
Fatty acid
Herbicides
Microalgae
Microbial ecotoxicology
Toxicity
Journal
The Science of the total environment
ISSN: 1879-1026
Titre abrégé: Sci Total Environ
Pays: Netherlands
ID NLM: 0330500
Informations de publication
Date de publication:
20 Oct 2019
20 Oct 2019
Historique:
received:
18
03
2019
revised:
20
06
2019
accepted:
22
06
2019
entrez:
16
11
2019
pubmed:
16
11
2019
medline:
18
12
2019
Statut:
ppublish
Résumé
Fatty acids (FA) are crucial for the maintenance of membrane fluidity and play a central role in metabolic energy storage. Polyunsaturated fatty acids play an essential ecological role since they are key parameters in the nutritional value of algae. Pesticide impacts on fatty acid profiles have been documented in marine microalgae, but remain understudied in freshwater diatoms. The aims of this study were to: 1) investigate the impact of diuron and S-metolachlor on "classical descriptors" (photosynthesis, growth rate, pigment contents, and on the expression levels of target genes in freshwater diatoms), 2) examine the impact of these pesticides on diatom fatty acid profiles and finally, 3) compare fatty acid profiles and "classical descriptor" responses in order to evaluate their complementarity and ecological role. To address this issue, the model freshwater diatom Gomphonema gracile was exposed during seven days to diuron and S-metolachlor at 10 μg.L
Identifiants
pubmed: 31726578
pii: S0048-9697(19)32920-1
doi: 10.1016/j.scitotenv.2019.06.347
pii:
doi:
Substances chimiques
Acetamides
0
Fatty Acids
0
Herbicides
0
Water Pollutants, Chemical
0
Diuron
9I3SDS92WY
metolachlor
X0I01K05X2
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM
Pagination
960-969Informations de copyright
Copyright © 2019 Elsevier B.V. All rights reserved.