Living in Vulcan's forge: Algal adaptation to stressful geothermal ponds on Vulcano Island (southern Italy) as a result of pre‐selective mutations

Phycological Research - Tập 57 Số 2 - Trang 111-117 - 2009
Victoria López‐Rodas1, Eduardo Costas1, Emilia Maneiro1, Fernando Marvá1, Mónica Rouco1, Antonio Delgado‐Huertas2, Antonio Flores‐Moya3
1Departamento de Producción Animal (Genética), Facultad de Veterinaria, Universidad Complutense, Avda. Puerta de Hierro s/n, E-28040 Madrid, Spain
2Estación Experimental del Zaidín, Consejo Superior de Investigaciones Científicas, Profesor Albareda 1, E-18008 Granada, Spain
3Departamento de Biología Vegetal (Botánica), Facultad de Ciencias, Universidad de Málaga, Campus de Teatinos s/n, E-29071 Málaga, Spain

Tóm tắt

SUMMARYFour species of eukaryotic algae proliferate in the sulfureous, acidic (pH 3.1) water of the largest geothermal pond on Vulcano Island (southern Italy). Consequently, this pond constitutes a natural laboratory for analysis of adaptation by phytoplankters to extremely stressful conditions. To distinguish between the pre‐selective or post‐selective origin of adaptation processes allowing the existence of phytoplankters in the pond, a Luria‐Delbrück fluctuation test was carried out with the chlorophycean Dictyosphaerium chlorelloides and the cyanobacterium Microcystis aeruginosa, both isolated from non‐extreme waters; natural water from the Vulcano Island pond was used as selective factor. Preselective, resistant D. chlorelloides cells appeared with a frequency of 4.7 × 10−7 per cell per generation. We propose that the micro‐algae inhabiting this stressful pond could be the descendents of chance mutants that arrived in the past or are even arriving at the present. The genetic adaptation of D. chlorelloides to Vulcano waters could help to explain the survival of photosynthesizers in very stressful geothermal waters during the Neoproterozoic ‘snowball Earth’, a period when primary production collapsed in the biosphere. On the other hand, adaptation to these conditions was not observed in M. aeruginosa, suggesting that cyanobacteria may not be able to develop any kind of adaptation to Vulcano pond water.

Từ khóa


Tài liệu tham khảo

Albertano P., 1995, Algae, Environment and Human Affairs, 19

American Public Health Association (APHA)‐American Water Works Association (AWWA)‐Water Pollution Control Federation (WPCF), 1992, Standard Methods for the Examination of Water and Wastewater, 1193

10.1017/S096702620200392X

10.1111/j.1095-8312.1989.tb02099.x

10.1126/science.179.4072.480

10.1007/978-1-4612-6284-8

10.1038/335142a0

10.1016/0027-5107(76)90110-X

Cooper S., 1991, Bacterial Growth and Division. Biochemistry and Regulation of Prokaryotic and Eukaryotic Division Cycles, 501

10.1016/0377-0273(86)90082-X

10.2216/i0031-8884-40-5-391.1

10.1111/j.1469-8137.2007.02095.x

Cox E. J., 1996, Identification of Freshwater Diatoms from Live Material

10.1006/tpbi.1995.1025

Elster J., 2001, Algae and extreme environments. Ecology and physiology, Nova Hedwigia, 123, 1

10.1111/j.1469-8137.2005.01325.x

10.1002/1521-1878(200012)22:12<1067::AID-BIES4>3.0.CO;2-Q

10.1007/BF01960543

10.1046/j.1529-8817.2002.01128.x

10.1016/j.watres.2004.01.036

10.1007/978-3-642-59491-5_10

10.1080/10409230701507773

10.1126/science.281.5381.1342

Horikoshi K., 1998, Extremophiles: Microbial Life in Extreme Environments, 322

John D. M., 2002, The Freshwater Algal Flora of the British Isles, 327

10.1073/pnas.94.13.6600

Keller J., 1980, The island of Vulcano, Rend. Soc. Ital. Mineral. Petrol., 36, 368

Kirschvink J. L., 1992, The Proterozoic Biosphere, 51

10.1017/S0263593300028650

10.1093/genetics/28.6.491

10.1080/09670260110001735328

10.1007/s10682-006-9134-8

10.1016/j.envexpbot.2008.01.001

10.1016/j.chemosphere.2008.04.009

10.1038/scientificamerican0497-82

Margulis L., 1982, Five Kingdoms. An Illustrated Guide to the Phyla of Life on Earth

10.1126/science.1010716

Pentecost A., 2002, The Freshwater Algal Flora of the British Isles, 303

10.1007/s00114-007-0330-3

10.1016/0027-5107(94)00190-G

10.1073/pnas.0832439100

10.1038/35059215

10.1038/35053170

10.1007/978-1-4020-6112-7

10.1002/9780470514986.ch1

10.1111/j.1469-8137.2005.01419.x

10.1146/annurev.es.26.110195.003005

Spiess E. B., 1989, Genes in Populations, 774

10.1002/(SICI)1521-401X(199801)26:1<13::AID-AHEH13>3.0.CO;2-V

Williams M. A., 1977, Quantitative Methods in Biology, 234

Wolowski K., 2002, The Freshwater Algal Flora of the British Isles, 144

Thông tin
Thông tin xuất bản

Phycological Research

Tập 57 Số 2

111-117

Thông tin tác giả