Summary
The spontaneous and nitrosoguanidine inducedN-1 virus resistant mutants of the blue-green algaNostoc muscorum were isolated with the average mutation frequency of 3.55×10−5 and 6.08×10−4 respectively. Of the surviving colonies 8 per cent became virus sensitive, whereas out of the remaining 92 per cent 9.3 per cent showed lysogenic behaviour and 13.3 per cent showed poor or no nitrogen fixing ability. Mutation to virus-resistance was independent of the presence of the virus. Spontaneous host range mutants of virus were not found in repeated experiments.
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References
Adams, M. H.: Bacteriophages. New York: Wiley (Interscience) 1959.
Adolph, K. W., Haselkorn, R.: Isolation and characterization of a virus infecting the blue-green algaNostoc muscorum. Virology46, 200–208 (1971).
Adolph, K. W., Haselkorn, R.: Photosynthesis and development of blue-green algal virusN-1. Virology47, 370–374 (1972).
Adolph, K. W., Haselkorn, R.: Blue-green algal virusN-1: Physical properties and disassembly into structural parts. Virology53, 427–440 (1973).
Allen, M. B., Arnon, D. I.: Studies on nitrogen fixing blue-green algae. I. Growth and nitrogen fixation byAnabaena cylindrica. Lemm. Plant Physiol.30, 366–372 (1955).
Asato, Y. A., Folsome, C. E.: Temporal genetic mapping of the blue-green algaAnacystis nidulans. Genetics65, 407–419 (1970).
Hays, W.: The genetics of bacteria and their viruses, 179. Oxford-Edinburgh: Blackwell Scientific Publ. 1968.
Ingram, L. O., van Baalen, C.: Characteristics of a stable filamentous mutant of a coccoid blue-green alga. J. Bacteriol.102, 784–787 (1970).
Padan, E., Shilo, M., Kislev, N.: Isolation of Cyanophages from freshwater ponds and their interaction withPlectonema boryanum. Virology32, 234–246 (1967).
Safferman, R. S., Morris, M. E.: Growth characteristics of the blue-green algal virusLPP-1. J. Bacteriol.88, 771–775 (1964).
Singh, P. K.: Ultraviolet sensitivity and genetics of blue-green algae and their viruses. Ph.D. Thesis, Banaras Hindu University, India (1967).
Singh, R. N., Singh, P. K., Kashyap, A. K., Sarma, T. A., Dhar, B., Chaubey, I. J., Chaudhary, I. D.: Isolation and characterization of new cyanophages and mutations ofLPP-1 and host algaPlectonema boryanum. In:Desikachary, T. V. (ed.), Taxonomy and Biology of Blue-green algae, 587–591. Madras: Madras University Press 1972.
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Padhy, R.N., Singh, P.K. Mutation to resistance for virusN-1 in the blue-green algaNostoc muscorum . Archives of Virology 52, 85–90 (1976). https://doi.org/10.1007/BF01317867
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DOI: https://doi.org/10.1007/BF01317867