Morphological and physiological alterations in the diatom Gomphonema pseudoaugur due to heavy metal stress |
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| Institution: | 1. Departamento de Ecología e Hidrología, Facultad de Biología, Universidad de Murcia, 30100 Murcia, Spain;2. Departamento de Biología Vegetal, Facultad de Biología, Universidad de Murcia, 30100 Murcia, Spain;3. Departamento de Toxicología, Facultad de Veterinaria, Universidad de Murcia, 30100 Murcia, Spain;4. Integrative Marine Ecology, Stazione Zoologica Anton Dohrn di Napoli, 80121 Napoli, Italy;1. University of Belgrade, Institute for Biological Research “Sini?a Stankovi?”, Bulevar despota Stefana 142, 11060 Belgrade, Serbia;2. University of Kragujevac, Faculty of Science, Institute of Biology and Ecology, Radoja Domanovi?a 12, 34000 Kragujevac, Serbia;3. Jo?ef Stefan Institute, Department of Environmental Sciences, Jamova 39, 1000 Ljubljana, Slovenia;4. University of Belgrade, Faculty of Biology, Institute for Botany and Botanical Garden “Jevremovac”, Takovska 43, 11000 Belgrade, Serbia;1. University of Aveiro, Department of Geosciences, GeoBioTec — Geobiosciences, Geotechnologies and Geoengineering Research Center, Campus de Santiago, 3810-193 Aveiro, Portugal;2. University of Aveiro, Department of Biology, GeoBioTec — Geobiosciences, Geotechnologies and Geoengineering Research Center, Campus de Santiago, 3810-193 Aveiro, Portugal;3. Centro de Ciências do Mar, CCMAR, Universidade do Algarve, Campus de Gambelas, 8005-139 Faro, Portugal |
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| Abstract: | Periphytic diatom communities were analyzed from several heavy metal contaminated water bodies of Haryana, India. Among the analyzed sites, site HO3 (Saraswati Dham, Kurukshetra, Pehowa) showed significant response in the periphytic diatom community in terms of community shift (dominance of Gomphonema pseudoaugur) and lower biodiversity indices (species richness and Shannon index). Gomphonema pseudoaugur responded more specifically through induction of lipid bodies and occurrence of deformities in diatom frustules. PCA analysis showed that site HO3 is contaminated with heavy metals, especially Pb and Se. Pearson's correlation analysis showed a positive and statistically strong relationship between induction of lipid bodies and deformities with heavy metals (Pb and Se). Finally, from the present study, we concluded that heavy metal stress induces increased lipid body (LBs) size and deformities in the diatom species Gomphonema pseudoaugur, which could be a valuable indicator species for biomonitoring and a consideration in biofuel production. |
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| Keywords: | Heavy metal contamination Diatoms Deformity Lipid bodies Biomonitoring |
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