Abstract
2,4-Dichlorophenoxyacetic acid, a commonly used herbicide, increased the growth of the filamentous blue-green alga,Nostoc linckia at doses upto 100 μg /ml. The herbicidetreated N2-cultures showed enhanced heterocyst frequency and N2-growth. Thus, the herbicide stimulated algal growth at the expense of molecular nitrogen under aerobic growth conditions. Rifampicin caused chain formation of heterocysts. This was effectively counteracted by 2,4-dichlorophenoxyacetic acid, suggesting a biological interaction between them at the level of the heterocyst spacing control mechanism.
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References
Allen, M. B. and Arnon. D.I. (1955)Plant Physiol.,30, 366.
Allen, M M. and Smith, A. J. (1969)Arch. Microbiol.,69, 114.
Ashton, F. M. and Crafts, A. S. (1973)Mode of action of herbicides (New York and London: Wiley Interscience).
Chu, S. P. (1942)J. Ecol.,31, 109.
Das. B. and Singh, P. K. (1977)Arch. Environ. Contamin. Toxicol.,5, 437.
DaSilva, E. J., Henrikson, L. E. and Henrikson, E. (1975)Arch. Environ. Contamin. Toxicol.,3, 193.
Fogg, G. E., Steward, W. D. P., Fay, P. and Walsby, A. E. (1973)The blue-green algae (London: Academic Press).
Haselkorn, R. (1978)Annu. Rev. Plant Physiol.,29, 319.
Kratz, W. A. and Myers, J. (1955)Am. J. Bot.,42, 282.
Lundkvist, I. (1970)Svensk. Bot. Tidsk.,64, 460.
Mitchison, G. J. and Wilcox, M. í 1973)Nature (London),246, 229.
Piper, C. S. (1966)Soil and plant analysis, (New York: Interscience Publishers) p. 368.
Safferman,R. S. and Morris, M. E. (1964)J. Bacteriol.,88, 771.
Singh, P. K. (1974)Arch. Microbiol.,97, 69.
Singh, R. N. (1961)The role of blue-green algae in nitrogen economy of Indian agriculture (New Delhi: Indian Council Agri. Res. Pub.).
Singh, R. N. and Tiwari, D. N. (1969)Nature (London),221, 62.
Stewart, W. D. P., Sampio, M. J., Isichei, A. O., and Sylvester-Brodley, R. (1978) inLimitation and potentials for biological nitrogen fixation in the tropics, eds. J. Dobereiner, R. S. Burris and A. Hollaender (New York: Plenum Press), p. 41.
Venkataraman, G. S. and Rajyalakshmi, B. (1972)Indian J. Agric. Sci.,42, 119.
Wolk, C. P. and Quine, M. P. (1975)Dev. Biol.,46, 370.
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Tiwari, D.N., Pandey, A.K. & Mishra, A.K. Action of 2,4-dichlorophenoxyacetic acid and rifampicin on heterocyst differentiation in the blue-green alga,Nostoc linckia . J Biosci 3, 33–39 (1981). https://doi.org/10.1007/BF02703345
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DOI: https://doi.org/10.1007/BF02703345