Harmful algae bloom constitutes a major problem facing water bodies particularly fresh and marine water system. Microcystis aeruginosa represents a major causative organism found in the water. Light plays a major role in the growth and variation of M. aeruginosa in water. What is still inadequate, is the data on the effects of different light conditions on the growth of Microcystis aeruginosa . In this study, two strains of Microcystis aeruginosa PCC 7806 (toxic strain) and PCC 7005 (non-toxic strain) were exposed to varying light intensities at 0, 30, 60, 120, 300, 350 μMol photon m -2 ·S -1 to measure their growth and pigmentation. This study observed similarities in growth and pigmentation between toxic strain (PCC 7806) and non-toxic (PCC 7005) strain. Also, at short exposure to light, Toxic strain was seen to be better tolerant of light than non-toxic strain, with non-toxic strain showing better ability to recover from light stress after twenty days of culture. These findings suggest that Toxic strain (PCC 7806) and Non-toxic strain (PCC 7005) of M. aeruginosa respond similarly with respect to growth but differ in their light retention capacity over time and this could be useful in predicting the possible conditions of algal bloom.
Quan, N.V., Xuan, T.D. and Teschke, R. (2020) Potential Hepatotoxins Found in Herbal Medicinal Products: A Systematic Review. International Journal of Molecular Sciences, 21, Article No. 5011. https://doi.org/10.3390/ijms21145011
Codd, G.A., Lindsay, J., Young, F.M., Morrison, L.F. and Metcalf, J.S. (2005) Harmful Cyanobacteria: From Mass Mortalities to Management Measures. In: Huisman, J., Matthijs, H.C. and Visser, P.M., Eds., Harmful Cyanobacteria, Springer, Dordrecht, 1-23.
Kahru, M., Horstmann, U. and Rud, O. (1994) Satellite Detection of Increased Cyanobacteria Blooms in the Baltic Sea: Natural Fluctuation or Ecosystem Change. AMBIO: A Journal of the Human Environment, 23, 469-472.
El-Shehawy, R. Gorokhova, E., Fernandez, P.F. and Del Campo, F. (2011) Global Warming and Hepatotoxin Production by Cyanobacteria: What Can We Learn from Experiment? Water Research, 46, 1420-1429.
Mur, L.R., Skulberg, O.M. and Utkilen, H. (1999) Chapter 2. Cyanobacteria in the Environment. In: Chorus, I. and Bartram, J., Eds., Toxic Cyanobacteria in Water: A Guide to Their Public Health Consequences, Monitoring and Management, St Edmundsbury Press, London, 15-40.
Callieri, C. (2016) Micro-Players for Macro-Roles: Aquatic Microbes in Deep Lakes. Journal of Limnology, 75, 191-200. https://doi.org/10.4081/jlimnol.2016.1370
Kobos, J., Błaszczyk, A., Hohlfeld, N., Toruńska-Sitarz, A., Krakowiak, A., Hebel, A., Sutryk, K., Grabowska, M., Toporowska, M., Kokociński, M., Messyasz, B., Rybak, A., Napiórkowska-Krzebietke, A., Nawrocka, L., Pełechata, A., Budzyńska, A., Zagajewski, P. and Mazur-Marzec, H. (2013) Cyanobacteria and Cyanotoxins in Polish Freshwater Bodies. Oceanological and Hydrobiological Studies, 42, 358-378. https://doi.org/10.2478/s13545-013-0093-8
Camila, A.T., Miquel, L. and Marcelo, M.M. (2015) Asessement of Effects of Light Availability on Growth and Competition between Strains of Planktothrix agardhii and Microcystis aeruginosa. Microbial Ecology, 71, 802-813. https://doi.org/10.1007/s00248-015-0719-z
Humpage, R.A. and Falconer, R.I. (1999) Microcystin-LR and Liver Tumor Promotion: Effects on Cytokinesis, Ploidy, and Apoptosis in Cultured Hepatocytes. Environmental Toxicology, 14, 61-75. https://doi.org/10.1002/(SICI)1522-7278(199902)14:1%3C61::AID-TOX10%3E3.0.CO;2-R
ONeil, J.M., Davis, T.W., Burford, M.A. and Gobler, C.J. (2011) The Rise of Harmful Cyanobacteria Blooms: The Potential Roles of Eutrophication and Climate Change. Harmful Algae, 14, 313-334.
Huisman, J., Chorus, I. and Bartram, J. (1999) Toxic Cyanobacteria in Water: A Guide to Their Public Health Consequences, Monitoring and Management. St Edmundsbury Press, London.
Litchman, E., Steiner. D. and Bossard, P. (2003) Photosynthetic and Growth Responses of Three Freshwater Algae to Phosphorus Limitation and Daylength. Freshwater Biology, 48, 2141-2148. https://doi.org/10.1046/j.1365-2427.2003.01157.x
Kardinaal, W.E.A., Janse, I., Kamst-Van Agterveld, M., Meima, M., Snoek, J., Mur, L.R., Huisman, J., Zwart, G. and Visser, P.M. (2007) Microcystis Genotype Succession in Relation to Microcystin Concentrations in Freshwater Lakes. Aquatic Microbial Ecology, 48, 1-12. https://doi.org/10.3354/ame048001
Verspagen, J.M.H., Van de Waal, D.B., Finke, J.F., Visser, P.M., Donk, E.V. and Huisman, J. (2014) Rising CO2 Level Will Intensify Phytoplankton Blooms in Euthrophic and Hypertrophic Lakes. PLoS ONE, 9, e104325. https://doi.org/10.1371/journal.pone.0104325
Pimentel, J.S.M. and Giani, A. (2014) Microcystin Production and Regulation under Nutrient Stress Conditions in Toxic Microcystis Strain. Applied and Environmental Microbiology, 80, 5836-5843.
Bogorad, L. (1975) Phycobiliproteins and Complementary Chromatic Adaptation. Annual Review of Plant Physiology, 26, 369-401. https://doi.org/10.1146/annurev.pp.26.060175.002101
Vincent, W.F. (2002) Cyanobacterial Dominance in the Polar Regions. In: Whitton, B.A. and Potts, M., Eds., the Ecology of Cyanobacteria, Springer, Dordrecht, 321-340. https://doi.org/10.1007/0-306-46855-7_12
Samsonoff, W. and MacColl, R. (2001) Biliproteins and Phycobilisomes from Cyanobacteria and Red Algae at the Extremes of Habitat. Archives of Microbiology, 176, 400-405. https://doi.org/10.1007/s002030100346
Sivonen, K. and Jones, G. (1999) Cyanobacterial Toxins. In: Chorus, I. and Bartram, J., Eds., Toxic Cyanobacteria in Water: A Guide to Their Public Health Consequences, Monitoring and Management, St Edmundsbury Press, London, 41-111.
Parker, D.L., Rai, L.C., Mallick, N., Rai, P.K. and Kumar, H.D. (1998) Effects of Cellular Metabolism and Viability on Metal Ion Accumulation by Cultured Biomass from a Bloom of the Cyanobacterium Microcystis aeruginosa. Applied and Environmental Microbiology, 64, 1545-1547.
Oginni, G.F., Oloketuyi, S.F., Mazzega, E., Budasheva, H., Beran, A., Cabrini, M., Korte, D., Mladen, F. and De Marco, A. (2021) Nanobody-Dependent Detection of Microcystis aeruginosa by ELISA and Thermal Lens Spectrometry. Applied Biochemistry and Biotechnology, 193, 2729-2741. https://doi.org/10.1007/s12010-021-03552-6
Yang, Z. and Kong, F. (2015) UV-B Exposure Affects the Biosynthesis Microcystin in Toxic Microcystis aeruginosa Cells and Its Degradation in the Extracellular Space. Toxins, 7, 4238-4252. https://doi.org/10.3390/toxins7104238
Islam, M.A. and John, B. (2017) Growth and Photosynthetic Characteristics of Toxic and Non-Toxic Strains of the Cyanobacteria Microcystis aeruginosa and Anabaena circinalis in Relation to Light. Microrganisms, 5, Article No. 45. https://doi.org/10.3390/microorganisms5030045
Kim, T.K. (2017) Understanding One-Way ANOVA Using Conceptual Figures. Korean Journal of Anesthesiology, 70, 22-26. https://doi.org/10.4097/kjae.2017.70.1.22
Ranganathan, P., Pramesh, C.S. and Buyse, M. (2015) Common Pitfalls in Statistical Analysis: Clinical versus Statistical Significance. Perspectives in Clinical Research, 6, 169-170. https://doi.org/10.4103/2229-3485.159943
Mishra, P., Singh, U., Pandey, C.M., Mishra, P. and Pandey, G. (2019) Alication of Student’s t-Test, Analysis of Variance, and Covariance. Annals of Cardiac Anaesthesia, 22, 407-411. https://doi.org/10.4103/aca.ACA_94_19
Venugopal, V., Prasanna, R., Sood, A., Jaiswal, P. and Kaushik, B.D. (2006) Stimulation of Pigment Accumulation in Anabaena azollae Strains: Effect of Light Intensity and Sugars. Folia Microbiologica, 51, 50-56. https://doi.org/10.1007/BF02931450
Romo, S. (1994) Growth Parameters of Pseudanabaena galeata Böcher in Culture under Different Light and Temperature Conditions. Algological Studies/Archiv für Hydrobiologie, 75, 239-248. https://doi.org/10.1127/algol_stud/75/1995/239