Article (Scientific journals)
Modulation of antioxidant gene expressions by Roundup® exposure in the decapod Macrobrachium potiuna
de Melo, Madson; Nazari, Evelise Maria; Muller, Yara Maria Rauh et al.
2020In Ecotoxicology and Environmental Safety
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Abstract :
[en] Glyphosate-based herbicides (GBH), including Roundup®, are the most used herbicides in agricultural and nonagricultural areas, which can reach aquatic environments through drift during application or surface runoff. Some studies, mostly in fish, demonstrated that GBH caused oxidative stress in non-target animals. However, only few information is available on the GBH effects in the antioxidant and stress proteins of many other organisms, such as freshwater crustaceans. Thus, we aimed to investigate the effects of environmentally relevant GBH concentrations on the relative transcript expression (RTE) of the superoxide dismutase (sod1), catalase (cat), selenium-dependent glutathione peroxidase (gpx), glutathione-S-transferase (gst), thioredoxin (txn), heat shock protein (hsp70 and hsp90) in the hepatopancreas of the ecologically important freshwater prawn Macrobrachium potiuna. Moreover, this study aimed to assess the gender-differences responses to GBH exposure. Male and female prawns were exposed to three Roundup WG® concentrations (0.0065, 0.065 and 0.28 mg of glyphosate/L) and a control group (0.0 mg/L) for 7 and 14 days. In general, males had an under-expression of the studied genes, indicating an oxidative stress and possible accumulation of ROS in the hepatopancreas. In the opposite, females had an overexpression of the same genes, indicating a more robust antioxidant system, in order to cope with the possible ROS increase after Roundup WG® exposure. Therefore, results confirmed that gender could be a confounding factor in ecotoxicological assessment of GBH effects. Additionally, this work highlights that sod1, cat, gpx, gst, txn, hsp70 and hsp90 gene expressions seem to be useful biomarkers to investigate the oxidative stress caused by Roundup WG® in Macrobrachium sp.
Research center :
FOCUS - Freshwater and OCeanic science Unit of reSearch - ULiège
Disciplines :
Environmental sciences & ecology
Author, co-author :
de Melo, Madson
Nazari, Evelise Maria
Muller, Yara Maria Rauh
Gismondi, Eric ;  Université de Liège - ULiège > Département de Biologie, Ecologie et Evolution > Ecologie animale et écotoxicologie
Language :
English
Title :
Modulation of antioxidant gene expressions by Roundup® exposure in the decapod Macrobrachium potiuna
Publication date :
March 2020
Journal title :
Ecotoxicology and Environmental Safety
ISSN :
0147-6513
eISSN :
1090-2414
Publisher :
Elsevier, Atlanta, United States - Florida
Peer reviewed :
Peer Reviewed verified by ORBi
Available on ORBi :
since 07 January 2020

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