Theses and Dissertations
Date of Award
5-2023
Document Type
Thesis
Degree Name
Master of Science (MS)
Department
Agricultural, Environmental, and Sustainability Sciences
First Advisor
Dr. MD Saydur Rahman
Second Advisor
Dr. Amit Raysoni
Third Advisor
Dr. Lucia Carreon Martinez
Abstract
Aquatic organisms are frequently exposed to various environmental stressors. In this study, we observed the short-term (1-week) combined dose-dependent effect of Roundup, a glyphosate-based herbicide, and high temperature (30°C) on the morphology of gills and digestive glands, expression of heat shock protein-70 (HSP70), dinitrophenyl protein (DNP), nitrotyrosine protein (NTP), antioxidant enzymes such as catalase (CAT) and superoxidase dismutase (SOD) in tissues of American oyster (Crassostrea virginica). Histological analyses showed an increase in mucous production in the gills and digestive glands, hemocyte aggregation in the connective tissues as well as structural change of the lumen in the digestive glands of oysters co-exposed to high temperature and Roundup. Alternation in the expression of HSP70, NTP, DNP, CAT, and SOD was also observed through immunohistochemical analyses. Collectively, these results suggest that combined exposure to high temperature and Roundup cause oxidative/nitrative stress through overproduction of ROS/RNS which alter the prooxidant-antioxidant status in marine mollusks.
Recommended Citation
Chowdhury, Afsana, "Effect of Elevated Temperature and Roundup Exposure on Oxidative Stress and Antioxidant Status in the American Oyster" (2023). Theses and Dissertations. 1206.
https://scholarworks.utrgv.edu/etd/1206
Included in
Animal Sciences Commons, Environmental Sciences Commons, Oceanography and Atmospheric Sciences and Meteorology Commons
Comments
Copyright 2023 Afsana Chowdhury. All Rights Reserved.
https://go.openathens.net/redirector/utrgv.edu?url=https://www.proquest.com/dissertations-theses/effect-elevated-temperature-roundup-exposure-on/docview/2842690030/se-2?accountid=7119