Abstract:
Evolution occurs not only through mutational changes, but also during evolutionary transitions - when groups become a new higher-level individual. The unicellular-multicellular transition was one of these important events in life. The volvocine green algae are an ideal model system to study this transition since they range from unicellular (e.g., Chlamydomonas), to undifferentiated colonies (e.g., Eudorina), to multicellular forms with complete germ-soma differentiation (e.g., Volvox). How does the evolution of traits that are necessary for multicellularity such as an extra-cellular matrix and germ-soma separation, alter the response to harmful chemicals? To test this, Volvocales of different size and complexity, but of similar cellular biology and development, were grown at different arsenic concentrations to measure their ecotoxicological response. We found evidence that Volvocales of larger size and complexity are more sensitive to arsenic contamination than their simpler and smaller counterparts. © 2014 Taylor & Francis Group.
Registro:
| Documento: |
Conferencia
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| Título: | Arsenic contamination, size, and complexity: A volvocine green algae case study |
| Autor: | Basualdo, J.P.; Galzenati, V.J.; Solari, C.A.; Conforti, V. |
| Ciudad: | Buenos Aires |
| Filiación: | Laboratorio de Biodiversidad, Ultraestructura Y Ecofisiología de Microalgas, Instituto de Biodiversidad Y Biología Experimental Aplicada, Buenos Aires, Argentina
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| Palabras clave: | Algae; Cytology; Arsenic concentration; Arsenic contamination; Ecotoxicological; Evolutionary transitions; Extracellular matrix; Harmful chemicals; Multicellularity; Mutational changes; Arsenic |
| Año: | 2014
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| Página de inicio: | 372
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| Página de fin: | 374
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| Título revista: | 5th International Congress on Arsenic in the Environment, As 2014
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| Título revista abreviado: | One Century Discov. Arsenicosis Latin America: As - Proc. Int. Congr. Arsenic Environ.
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| Registro: | https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_97811380_v_n_p372_Basualdo |
Referencias:
- Kirk, D.L., (1998) Volvox: Molecular-genetic Origins of Multicellularity and Cellular Differentiation, , Cambridge University Press, Cambridge
- Kirk, D.L., Kirk, M.M., Protein synthetic patterns during the asexual life cycle of Volvox carteri (1983) Developmental Biology, 96, pp. 493-506
- Levy, J.L., Stauber, J.L., Adams, M.S., Maher, W.A., Kirby, J.K., Jolley, D.F., Toxicity, biotransformation, and mode of action of arsenic in two freshwater microalgae (Chlorella sp. and Monoraphidium arcuatum) (2005) Environmental Toxicology and Chemistry, 24 (10), pp. 2630-2639
- Lichtenthaler, H.K., Chlorophylls and carotenoids: Pigments of photosynthetic biomembranes (1987) Methods in Enzymology, 148, pp. 350-382
- Norberg-King, T.J., (1993) A Linear Interpolation Method for Sublethal Toxicity: The Inhibition Concentration (ICp) Approach. Version 2.0, , National Effluent Toxicity Assessment Center Technical Report 03-93, Environmental Research Laboratory, Duluth, MN 55804. June 1993
- Solari, C.A., Kessler, J.O., Michod, R.E., A Hydrodynamics Approach to the Evolution of Multicellularity: Flagellar motility and the evolution of germ-soma differentiation in volvocalean green algae (2006) The American Naturalist, 167, pp. 537-554A4 - et al.; National Atomic Energy Commission (CNEA); National Research and Technology Council (CONICET); The Argentine Foundation of Nanotechnology; The National University of Buenos Aires (UBA); The National University of San Martin (UNSAM)
Citas:
---------- APA ----------
Basualdo, J.P., Galzenati, V.J., Solari, C.A. & Conforti, V.
(2014)
. Arsenic contamination, size, and complexity: A volvocine green algae case study. 5th International Congress on Arsenic in the Environment, As 2014, 372-374.
Recuperado de https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_97811380_v_n_p372_Basualdo [ ]
---------- CHICAGO ----------
Basualdo, J.P., Galzenati, V.J., Solari, C.A., Conforti, V.
"Arsenic contamination, size, and complexity: A volvocine green algae case study"
. 5th International Congress on Arsenic in the Environment, As 2014
(2014) : 372-374.
Recuperado de https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_97811380_v_n_p372_Basualdo [ ]
---------- MLA ----------
Basualdo, J.P., Galzenati, V.J., Solari, C.A., Conforti, V.
"Arsenic contamination, size, and complexity: A volvocine green algae case study"
. 5th International Congress on Arsenic in the Environment, As 2014, 2014, pp. 372-374.
Recuperado de https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_97811380_v_n_p372_Basualdo [ ]
---------- VANCOUVER ----------
Basualdo, J.P., Galzenati, V.J., Solari, C.A., Conforti, V. Arsenic contamination, size, and complexity: A volvocine green algae case study. One Century Discov. Arsenicosis Latin America: As - Proc. Int. Congr. Arsenic Environ. 2014:372-374.
Available from: https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_97811380_v_n_p372_Basualdo [ ]
