Abstract
Aquatic community structure is a reflection of the changes in constituent populations and the complex interactions between these organisms and environmental stressors. Consequently, shifts in populations and community structure can be used to assess water quality. However, these indicators only reflect damage already sustained by an ecosystem and are not useful for prediction of potential ecological impacts. Molecular/biochemical indicators, such as heat shock proteins, can provide early indication of environmental stress on aquatic communities. The heat shock protein response involves the synthesis of an array of proteins that protect organisms from cellular damage resulting from exposure to a variety of stressors. Consequently, stress proteins have the potential of being an important screening tool indicating exposure to, and/or biological effects of environmental contaminants. The midge larva Chironomus tentans has been extensively used in bioassays of freshwater systems. However, investigations of stress proteins as environmental biomarkers in midges are lacking. To evaluate the potential use of HSP-70 as a biomarker of environmental stress, we completed a preliminary characterization of the stress protein response in C. tentans upon exposure to heat shock. Western immunoblotting indicated an increase in a 72 kD protein after larvae were exposed to 33 °C, 35 °C, and 37 °C. The observed induction was rapid, appearing within 5–10 min, and persisted for over 24 h after removal of the stressor. The results are discussed with regard to the use of the HSP-70 biomarker as an environmental screening tool. It is proposed that the HSP-70 biomarker is most applicable as a sublethal toxicity test endpoint indicative of the presence of biochemically significant levels of stress.
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References
APHA, 1992. Standard Methods for the Examination of Water and Wastewater. American Public Health Association, Washington, D.C.
Attrill, M. J. & M. H. Depledge, 1997. Community and population indicators of ecosystem health: targeting links between levels of biological organization. Aquat. Toxicol. 38: 183–197.
Barettino, D., G. Morcillo & J. L. Diez, 1988. Induction of the heat shock response by carbon dioxide in Chironomus thummi. Cell Differentiation 23: 27–36.
Benoit, D. A., P. K. Sibley, J. L. Juenemann & G. T. Ankley, 1997. Chironomus tentans life-cycle test: design and evaluation for use in assessing toxicity of contaminated sediments. Environ. Toxicol. Chem. 16: 1165–1176.
Burton, G. A. & C. MacPherson, 1995. Sediment toxicity testing issues and methods. In Hoffmann D. A., B. A. Rattner, G. A. Burton & J. Cairns (eds), Environmental Toxicology. Lewis Publishers, CRC Press, Inc., Boca Raton (FL): 70–103.
Carretero, M. T., M. J. Carmona, & J. L. Diez, 1991. Thermotolerance and heat shock proteins in Chironomus. J. Insect Physiol. 37: 239–246.
Clements, W. H., D. S. Cherry & J. Cairns, Jr., 1988. Impact of heavy metals on insect communities in streams: a comparison of observational and experimental results. Can. J. Fish. aquat. Sci. 45: 2017–2025.
Dyer, S. D. 1991. Evaluation of the efficacy of the stress protein response as a biochemical water quality monitoring method. University of North Texas, Denton, TX.
Dyer, S. D., G. L. Brooks, K. L. Dickson, B. M. Sanders & E. G. Zimmerman, 1993. Synthesis and accumulation of stress proteins in tissues of arsenite-exposed fathead minnows (Pimephales promelas). J. Toxicol. Chem. 12: 913–924.
Fader, S. C., Z. Yu & J. R. Spotila, 1994. Seasonal variation in heat shock proteins (HSP70) in stream fish under natural conditions. J. Therm. Biol. 19: 335–341.
Johnson, R. K., T. Wiederholm & D. M. Rosenberg, 1993. Freshwater biomonitoring using individual organisms, populations, and species assemblages of benthic macroinvertebrates. In Rosenberg D. M. & V. H. Resh (eds), Freshwater Biomonitoring and Benthic Macroinvertebrates. Chapman & Hall, Inc., New York, NY: 40–125.
Köhler, H.-R., B. Rahman, S. Graff, M. Berkus & R. Triebskorn, 1996. Expression of the stress-70 protein family due to heavy metal contamination in the slug, Derocerus reticulatum: an approach to monitor sublethal stress conditions. Chemosphere 33: 1327–1340.
Laemmli, U. K., 1970. Cleavage of structural proteins during the assembly of the head of bacteriophage T4. Nature 227: 680–685.
Lezzi, M., B. Meyer & R. Mahr, 1981. Heat shock phenomena in Chironomus tentans I. In vivo effects of heat, overheat and quenching on salivary chromosome puffing. Chromosoma (Berl.) 83: 327–339.
Morcillo, G., & J. L. Diez, 1996. Telomeric puffing induced by heat shock in Chironomus thummi. J. Biosci. 21: 247–257.
Ritossa, F. M., 1962. A new puffing pattern induced by heat shock and DNP in Drosophila. Experimentia 18: 571–573.
Ryan, J. A. & L. E. Hightower, 1994. Evaluation of heavy-metal ion toxicity in fish cells using a combined stress protein and cytotoxicity assay. Environ. Toxicol. Chem. 13: 1231–1240.
Sanders, B., 1990. Stress proteins: potential as multitiered biomarkers. In Shugart L., J. McCarthy (eds), Biomarkers of Environmental Contamination. Lewis Publishers, Boca Raton (FL): 165–191.
Sanders, B. M., 1993. Stress proteins in aquatic organisms: an environmental perspective. CRC Crit. Rev. Toxicol. 23: 49–75.
Sanders, B. M., L. S. Martin, P. A. Nakagawa, D. A. Hunter & S. Miller, 1994. Specific cross-reactivity of antibodies raised against two major stress proteins, stress 70 and chaperonin 60, in diverse species. Environ. Toxicol. Chem. 13: 1241–1249.
Sanders, B. M., L. S. Martin, W. G. Nelson, D. K. Phelps & W. Welch, 1991. Relationships between accumulation of a 60-kDa stress protein and scope-for-growth in Mytilus edulis exposed to a range of copper concentrations. Mar. envir. Res. 31: 81–97.
Sanders, B. M., J. Nguyen, L. S. Martin, S. R. Howe & S. Coventry, 1995. Induction and subcellular localization of two major stress proteins in response to copper in the fathead minnow Pimephales promelas. Comp. Biochem. Physiol. 112C: 335–343.
Sibley, P. K., D. A. Benoit & G. T. Ankley, 1997. The significance of growth in Chironomus tentans sediment toxicity tests: relationship to reproduction and demographic endpoints. Environ. Toxicol. Chem. 16: 336–345.
Simpson, K.W., R.W. Bode & J. R. Colquhoun, 1985. Themacroinvertebrate fauna of an acid-stressed headwater stream system in the Adirondack Mountains, New York. Freshwat. Biol. 15: 671–681.
Smerdon, G. R., J. P. Chapple & A. J. S. Hawkins, 1995. The simultaneous immunological detection of four Stress-70 protein isoforms in Mytilus edulis. Mar. envir. Res. 40: 399–407.
Stegeman, J. J., M. Brouwer, R. T. Di Giullo, L. Forlin, B. A. Fowler, B. M. Sanders & P. A. Van Veld, 1992. Molecular responses to environmental contamination: enzyme and protein systems as indicators of chemical exposure and effect. In Huggett R. J., R. A. Kimerle, P. M. Mehrle Jr. & H. L. Bergman (eds), Biomarkers: Biochemical, Physiological, and Histological Markers of Anthropogenic Stress. Lewis Publishers, Inc., Ann Arbor (MI): 235–335.
Tanguay, R. M. & M. Vincent, 1980. Biosynthesis and characterization of heat shock proteins in Chironomus tentans salivary glands. Can. J. Biochem. 59: 67–73.
U.S. EPA (United States Environmental Protection Agency), 1994. Methods for measuring the toxicity and bioaccumulation of sediment associated contaminants using freshwater invertebrates. EPA 600-R94-024. Technical Report. Washington, DC.
Veldhuizen-Tsoerkan, M. B., D. A. Holwerda, C. A. van der Mast & D. I. Zandee, 1990. Effects of cadmium exposure and heat shock on protein synthesis in gill tissue of the sea mussel Mytilus edulis L. Comp. Biochem. Physiol. C. 96: 419–426.
Veldhuizen-Tsoerkan, M. B., D. A. Holwerda, C. A. van der Mast & D. I. Zandee, 1991. Synthesis of stress proteins under normal and heat shock conditions in gill tissue of sea mussels (Mytilus edulis) after chronic exposure to cadmium. Comp. Biochem. Physiol. 100: 699–706.
Yu, Z., W. E. Magee & J. R. Spotila, 1994. Monoclonal antibody ELISA test indicates that large amounts of constitutive HSP-70 are present in salamanders, turtle and fish. J. therm. Biol. 19: 41–53.
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Karouna-Renier, N., Zehr, J. Ecological implications of molecular biomarkers: assaying sub-lethal stress in the midge Chironomus tentans using heat shock protein 70 (HSP-70) expression. Hydrobiologia 401, 255–264 (1999). https://doi.org/10.1023/A:1003730225536
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DOI: https://doi.org/10.1023/A:1003730225536