Abstract
The effect of the organophosphorus insecticide Ekalux Ec-25 (quinalphos) was studied on akinete germination, and sporulation of the green algaPithophora kewensis (Cladophorales). Initiation of akinete germination was delayed by 1–3 d with 0.025–0.1% concentrations of the pesticide used. The percentage of akinete germination was found to be markedly affected by the treatment with insecticide, except with the concentration of 0.25% Ekalux Ec-25, where percent germination was observed to be higher than in the control. Generally, the time taken for the initiation of akinete formation increased and percent sporulation decreased with the increase of concentrations from 0.025 to 0.1% of Ekalux Ec-25.
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Agrawal S.B.: The control of the growth ofPithophora kewensis Wittr. with algicide copper sulphate.Sci. and Cul. 49, 404 (1983).
Agrawal S.B., Agrawal M., Nandi P.K., Rao D.N.: Effects of sulphur dioxide and Ekalux Ec-25 singly and in combination on the photosynthetic pigments ofOryza sativa plants.J. Env. Biol. 8, 315 (1987a).
Agrawal S.B., Agrawal M., Nandi P.K., Rao D.N.: Effects of sulphur dioxide and quinalphos singly and in combination on the metabolic functions and growth ofOryza sativa L. plants.Proc. Ind. Acad. Sci. (Part B)53, 169 (1987b).
Chaudhary B.R., Singh H.V.: Effects of mercuric chloride on akinete germination and sporulation inPithophora oedogonia (Mont.) Wittr. (Cladophorales, Chlorophyceae).J. Basic Microbiol. 26, 3 (1986).
Christie A.E.: Effects of insecticides on algae.Wat. Sewage Wks. 116, 172 (1969).
Chu S.P.: The influence of mineral composition of the medium on the growth of planktonic algae. I. Methods and culture media.J. Ecol. 30, 284 (1942).
Freebairn H.T., Taylor O.C.: Prevention of plant damage from air borne oxidizing agents.Proc. Amer. Soc. Hort. Sci. 76, 693 (1960).
Howell R.K.: Phenols and their involvement in the physiology of plant injury. In: M. Dugger (Ed.)Air Pollution Related to Plant Growth. Washington (DC), A.C.S. Symp.Ser.3, 94 (1974).
Moore R.B.: Effects of pesticide on growth and survival ofEuglena gracilis.Bull. Environ. Cont. Toxicol. 5, 226 (1970).
Pandey K.D., Kashyap A.K.: Differential sensitivity of three cyanobacteria, to the rice field herbicide Machete.J. Basic Microbiol. 26, 421 (1986).
Sarma Y.S.R.K., Abhayavardhani P.: Effects of two insecticides (Ekatin and Anthio) on the karyology ofSpirogyra paradoxa Rao.J. Cytol. Genet. 15, 26 (1980).
Sarma Y.S.R.K., Agrawal S.C.: Effects of UV-light on sporulation of green algaStigeoclonium pascheri (Vischer) Cox andBold.Ind. J. Exp. Biol. 18, 298 (1980).
Sarma Y.S.R.K., Agrawal S.B., Chaudhary B.R.: UV-light and photoreactivation studies on germination of akinetes ofPithophora kewensis Wittr.Bibliotheca Phycol. 66, 321 (1983).
Sethunathan N., Mc Rae I.C.: Some effects of diazion on the microflora of submerged soils.Plant Soil 30, 109 (1969).
Shirashu Y., Moriya M., Katho K., Furhashi A., Kada T.: Mutagenicity screening of pesticides in microbial system.Mut. Res. 40, 19 (1976).
Shuter B.: A model of physiological adaptation in unicellular algae.J. Theor. Biol. 78, 519 (1969).
Srivastava S., Sarma Y.S.R.K.: Effects of two insecticides—Dimecron and Nuvan on the survival, growth and nuclear cytology ofOedogonium gunnii Wittr.J. Cytol. Genet. 14, 163 (1979).
Ware G.W., Dee M.K., Cahill W.P.: Water floras as indicators of irrigation water contamination by DDT.Bull. Environ. Contam. Toxicol. 3, 333 (1968).
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Agrawal, S.B., Chaudhary, B.R. Effects of Ekalux Ec-25 on akinete germination and sporulation ofPithophora kewensis . Folia Microbiol 34, 127–131 (1989). https://doi.org/10.1007/BF02823690
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DOI: https://doi.org/10.1007/BF02823690