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Mutagenic activity of alachlor, butachlor and carbaryl to a N2-fixing cyanobacterium Nostoc muscorum

Published online by Cambridge University Press:  27 March 2009

A. Vaishampayan
A. Vaishampayan
Affiliation:
Faculty of Science (B. U.), Chaturbhujasthan, Muzaffarpur-S42001, India
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Summary

Alachlor, butachlor and carbaryl were highly toxic to the N2-fixing cyanobacterium Nostoc muscorum, when grown on solid minimal (nitrogen-free) medium. At pesticides doses allowing about 20, 50 and 60% survival of the organism, various mutations were obtained in N. muscorum, reverse mutation from het+nif– and het–nif+ auxotrophy to het+nif+ prototrophy, forward mutation for resistance to 0·37 mM L-methionine-DL-sulfoximine, and auxotrophic mutation for the achievement of carbon-auxotrophy through 5 mM methylamine-resistance. The toxic and mutagenic effects of the three pesticides were similar to those of the well known mutagen MNNG.

Type
Research Article
Information
The Journal of Agricultural Science , Volume 104 , Issue 3 , June 1985 , pp. 571 - 576
Copyright
Copyright © Cambridge University Press 1985

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