Dajana Ručová, Michal Goga, Marek Matik, Martin Bačkor
|Journal:||Czech Polar Reports|
|No. of Pages:||10|
|Publishers:||muniPress Masaryk University Brno|
|ISSN:||1805-0689 (Print), 1805-0697 (On-line)|
Availability of water may influence activities of all living organisms, including cyanobacterial communities. Filamentous cyanobacterium Nostoc commune is well adapted to wide spectrum of ecosystems. For this reason, N. commune had to develop diverse protection strategies due to exposition to regular rewetting and drying processes. Few studies have been conducted on activities, by which cyanobacteria are trying to avoid water deficit. Therefore, the present study using physiological and morphological parameters is focused on comparison between European and Antarctic ecotypes of N. commune during rewetting. Gradual increase of FV/FM ratios, as the markers of active PS II, demonstrated the recovery processes of N. commune colonies from Europe as well as from Antarctica after time dependent rehydration. During the initial hours of rewetting, there was lower content of soluble proteins in colonies from Antarctica in comparison to those from Europe. Total content of nitrogen was higher in European ecotypes of N. commune. Significantly higher frequency of occurrence of heterocysts in Antarctic ecotypes was observed. The heterocyst cells were significantly longer in Antarctic ecotypes rather than European ecotypes of N. commune.
Antarctica, soluble proteins, cyanobacteria, chlorophyll fluorescence,
heterocysts, nitrogen, James Ross Island
Barták, M., Hazdrová, J., Skácelová, K. and Hájek, J. (2016): Dehydration- induced responses of primary photosynthetic processes and spectral reflectance indices in Antarctic Nostoc commune. Czech Polar Reports, 6 (1): 87-95.
Bradford, M. M. (1976): A rapid and sensitive method for the quantification of microgram quantities of protein utilizing the principle of protein-dye binding. Analytical Biochemistry, 72: 248-254.
Cameron, R. E. (1962): Species of Nostoc vaucher occurring in the Sonoran desert in Arizona. Transactions of the American Microscopical Society, 81: 379-384.
Campbell, E. L., Summers, M. L., Christman, H., Martin, M. E. and Meeks, C. J. (2007): Global gene expression patterns of Nostoc punctiforme in steady-state dinitrogen grown heterocyst-containing cultures and at single time points during the differentiation of akinetes and hormogonia. Journal of Bacteriology, 189: 5247-5256.
Dixon, R., Kahn, D. (2004): Genetic regulation of biological nitrogen fixation. Nature Reviews Microbiology, 2: 621-631.
Gupta, R. K., Kashyap, A. K. (1995): Water uptake and loss by Antarctic cyanobacterium Nostoc commune. Eleventh Indian Expedition to Antarctica, Scientific Report, Department of Ocean Development, Technical Publication No. 9, pp. 221-227.
Hirai, M., Yamakawa, R., Nishio, J., Yamaji, T., Kashino, Y., Koike, H. and Satoh, K. (2004): Deactivation of photosynthetic activities is triggered by loss of a small amount of water in a desiccation-tolerant cyanobacterium, Nostoc commune. Plant and Cell Physiology, 45: 872-878.
Kennedy, M. J., Reader, S. L. and Swierczynski, L. M. (1994): Preservation records of micro-organisms: evidence of the tenacity of life. Microbiology, 140: 2513-2529.
Komárek, J., Genuário, G. B., Fiore, M. F. and Elster, J. (2015): Heterocytous cyanobacteria of the Ulu Peninsula, James Ross Island, Antarctica. Polar Biology, 38: 475-492.
Kvíderová, J., Elster, J. and Šimek, M. (2011): In situ response of Nostoc commune s.l. colonies to desiccation in Central Svalbard, Norwegian High Arctic. Fottea, 11: 87-97.
Lange, O.L., Green, T.G.A., Reichenberger, H. and Meyer, A. (1996): Photosynthetic depression at high thallus water contents in lichens: Concurrent use of gas exchange and fluorescence techniques with a cyanobacterial and a green algal Peltigera species. Botanica Acta, 109: 43-50.
Meeks, J. C., Campbell, E. L., Summers, M. L. and Wong, F. C. (2002): Cellular differentiation in the cyanobacterium Nostoc punctiforme. Archives in Microbiology, 178: 395-403.
Meeks, J. C., Elhai J. (2002): Regulation of cellular differentiation in filamentous cyanobacteria in free-living and plant-associated symbiotic growth states. Microbiology and Molecular Biology Reviews, 66: 94-121.
Novis, P. M., Whitebread, D., Gregorich, E. G., Hunt, J. E., Sparrow, A. D., Hopkins, D. W., Elberling, B. and Greenfield, L.G. (2007): Annual carbon fixation in terrestrial populations of Nostoc commune (Cyanobacteria) from an Antarctic dry valley is driven by temperature regime. Global Change Biology, 13: 1224-1237.
Philippis, R. De, Vincenzini, M. (1998): Exocellular polysaccharides from cyanobacteria and their possible applications. FEMS Microbiology Reviews, 22: 151-175.
Potts, M. (1994): Desiccation tolerance of prokaryotes. Microbiology Reviews, 58: 755-805.
Putzke, J., Pereira, A. B. (2001): The Antarctic mosses with special reference to the Shetland Island. Canoas: Editora da Ulbra. 196 p.
Satoh, K., Hirai, M., Nishio, J., Yamaji, T., Kashino, Y. and Koike, H. (2002): Recovery of photosynthetic systems during rewetting is quite rapid in a terrestrial cyanobacterium, Nostoc commune. Plant and Cell Physiology, 43: 170-176.
Scherer, S., Ernst A., Chen T. W. and Böger, P. (1984): Rewetting of drought resistant blue-green algae: time course of water uptake and reappearance of respiration, photosynthesis, and nitrogen fixation. Oecologia, 62: 418-423.
Skácelová, K., Barták, M., Coufalík, P., Nývlt, D. and Trnková, K. (2013): Biodiversity of freshwater algae and cyanobacteria on deglaciated northern part of James Ross Island, Antarctica. A preliminary study. Czech Polar Reports, 3: 93-106.