Abstract
Almost all dried vegetative trichomes ofAnabaena iyengarii, Westiellopsis prolifica andNostochopsis lobatus died within 1 h, while those ofOscillatoria acuminata retained viability to some extent for 1 d under similar storage conditions. The viability of dried vegetative trichomes ofO. acuminata decreased about equally on storage at 20°C in the light or in the dark, but dropped rapidly at 12 and 0°C in the dark. Vegetative trichomes ofA. iyengarii, N. lobatus andW. prolifica were more sensitive to frost than those ofO. acuminata, and this correlated with their low resistance to desiccation because both types of exposure involved osmotic stress. Both dried and wet akinetes ofA. iyengarii, W. prolifica andN. lobatus were about equally viable when stored at 20°C in the light or the dark or at 12 and 0°C in the dark, but their germination ability decreased on storage at 0°C. The water stress imposed on growing vegetative trichomes either in high-agar media or in NaCl-supplemented liquid media reduced the survival ofO. acuminata trichomes, decreased or totally suppressed akinete and heterocyst formation and akinete germination inA. iyengarii, W. prolifica andN. lobatus. The sensitivity decreased in the sequenceA. iyengarii <W. prolifica ¨~N. lobatus. The akinete germination in all three blue-green algae was more sensitive to physiological water stress than their formation. In all of them, akinetes formed under water stress were equally viable as those formed under normal conditions. Trichomes ofO. acuminata became broader when grown in 0.5–0.8 mol/L NaCl-supplemented media, probably due to polyol accumulation, and they also developed a thin sheath-like structure.
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Agrawal S.C., Singh V.: Viability of dried vegetative cells and the formation and germination of reproductive structures inPithophora œdogonia, Cladophora glomerata andRhizoclonium hieroglyphicum under water stress.Folia Microbiol.44, 63–70 (1999).
Barbiero R.P., Welch E.B.: Contribution of benthic blue-green algae recruitment to lake populations and phosphorus translocation.Freshwater Biol.27, 249–260 (1992).
Caiola M.G., Billi D., Friedmann E.I.: Effect of desiccation on envelopes of the cyanobacteriumChroococcidiopsis sp. (Chroococcales).Eur. J. Phycol.31, 97–105 (1996).
Cameron R.E., Blank G.R.:Desert algae: soil crusts and diaphanous substrata as algal habitats. Jet Propulsion Laboratory Pasadena Tech. Rep. No. 32-971, pp. 1–45. Pasadena (USA) 1966.
Erdmann N., Schiewer U.: Cell size changes as indicator of salt resistance of blue-green algae.Arch. Hydrobiol. (Suppl.)67, 431–439 (1984).
Evans J.H.: The survival of freshwater algae during dry periods I. An investigation of the algae of five small ponds.J. Ecol.46, 149–168 (1958).
Hawes I., Howard-Williams C., Vincent W.F.: Desiccation and recovery of antarctic cyanobacterial mats.Polar Biol.12, 587–594 (1992).
Hof T., Fremy P.: OnMyxophyceae living in strong brines.Rec. Trav. Bot. Neerland30, 140–162 (1933).
Levitt J.: Frost, drought and heat resistance, pp. 1–87 inProtoplasmatologia-Handbuch der Protoplasma Forschung (L. V. Heilbrunn, F. Weber, Eds), Vol. VIII. Springer, Vienna 1958.
Roelofs T., Oglesby R.T.: Ecological observations on the planktonic cyanophyteGlœotrichia echinulata.Limnol. Oceanogr.15, 224–229 (1970).
Scherer S., Zhong Z.P.: Desiccation independence of terrestrialNostoc commune ecotypes (Cyanobacteria).Microb. Ecol.22, 271–283 (1991).
Sili C., Ena A., Materassi R., Vincenzini: Germination of desiccated aged akinetes of alkaliphilic cyanobacteria.Arch. Microbiol.162, 20–25 (1994).
Stanier R.Y., Kunisawa R., Mandel M., Cohen B.: Purification and properties of a unicellular blue-green alga (orderChroococcales).Bact. Rev.35, 171–205 (1971).
Stewart W.D.P.: Nitrogen turnover in marine and brackish habitats. I. Nitrogen fixation.Ann. Bot.20, 229–239 (1965).
Tomaselli L., Giovannetti L.: Survival of diazotrophic cyanobacteria in soil.World J. Microbiol. Biotechnol.9, 113–116 (1993).
Whitton B.A.: Survival and dormancy of blue-green algae, pp. 109–167 inSurvival and Dormancy of Microorganisms (Y. Henis, Ed.). John Wiley & Sons, New York 1987.
Yamamoto Y.: Effect of desiccation on the germination of akinetes ofAnabœna cylindrica.Plant Cell Physiol.16, 749–752 (1975).
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Agrawal, S.C., Singh, V. Viability of dried vegetative trichomes, formation of akinetes and heterocysts and akinete germination in some blue-green algae under water stress. Folia Microbiol 44, 411–418 (1999). https://doi.org/10.1007/BF02903715
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DOI: https://doi.org/10.1007/BF02903715