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MAPKs and HSPs’ Activation of a Natural Daphnia magna Population in a Man-Perturbed Lake: Implications of Ecological Significance

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Department of Zoology, School of Biology, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece
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Department of Botany, School of Biology, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece
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Environmental Pollution Control Laboratory, School of Chemistry, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece
*
Author to whom correspondence should be addressed.
Academic Editor: Antonio Zuorro
Water 2021, 13(3), 283; https://doi.org/10.3390/w13030283
Received: 19 December 2020 / Revised: 15 January 2021 / Accepted: 21 January 2021 / Published: 25 January 2021
(This article belongs to the Special Issue Taxonomy, Physiology, and Ecology of Aquatic Microorganisms)
Natural and anthropogenic pressures in inland waters induce molecular response mechanisms in organisms as a defense against such multiple stressors. We studied, for the first time, the expression of the stress proteins, heat shock proteins (HSP) and mitogen-activated proteins kinase (MAPK), in a Daphnia magna natural population as a response to environmental changes in a heavily modified water body (Lake Koronia, Northern Greece). In parallel, the water physicochemical parameters, nutrients’ concentration and phytoplankton abundance were measured. Our results showed fluctuations of the proteins’ levels (HSP70, HSP90, phospho-p38 MAPK, phospho-p44/42 MAPK) providing evidence of their expression in situ. HSP70 showed an increasing tendency while for HSP90, no tendency was recorded. The MAPKs’ members followed a reverse pattern compared to each other. The differential expression of HSP and MAPK members indicates that D. magna in Lake Koronia experienced stressors such as increasing temperature, salinity and increased nutrient concentrations, high pH values and variations in phytoplankton abundance that triggered their activation. These in situ findings suggest that HSP and MAPK expression patterns have the potential to be used as biomarkers of stress factors in D. magna, for effective biomonitoring and setting ecological restoration targets. View Full-Text
Keywords: Cladocera; HSP70; HSP90; p-p38 MAPK; p-p44/42 MAPK; Lake Koronia; Greece Cladocera; HSP70; HSP90; p-p38 MAPK; p-p44/42 MAPK; Lake Koronia; Greece
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MDPI and ACS Style

Demertzioglou, M.; Antonopoulou, E.; Voutsa, D.; Kozari, A.; Moustaka-Gouni, M.; Michaloudi, E. MAPKs and HSPs’ Activation of a Natural Daphnia magna Population in a Man-Perturbed Lake: Implications of Ecological Significance. Water 2021, 13, 283. https://doi.org/10.3390/w13030283

AMA Style

Demertzioglou M, Antonopoulou E, Voutsa D, Kozari A, Moustaka-Gouni M, Michaloudi E. MAPKs and HSPs’ Activation of a Natural Daphnia magna Population in a Man-Perturbed Lake: Implications of Ecological Significance. Water. 2021; 13(3):283. https://doi.org/10.3390/w13030283

Chicago/Turabian Style

Demertzioglou, Maria, Efthimia Antonopoulou, Dimitra Voutsa, Argyri Kozari, Maria Moustaka-Gouni, and Evangelia Michaloudi. 2021. "MAPKs and HSPs’ Activation of a Natural Daphnia magna Population in a Man-Perturbed Lake: Implications of Ecological Significance" Water 13, no. 3: 283. https://doi.org/10.3390/w13030283

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