Action of 2,4-dichlorophenoxyacetic acid and rifampicin on heterocyst differentiation in the blue-green alga, Nostoc linckia.
Date
1981-03
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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.
Description
Keywords
Blue-green alga, heterocyst differentiation, N2–growth, rifampicin, 2,4-dichlorophenoxyacetic acid
Citation
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. Journal of Biosciences. 1981 Mar; 3(1): 33-39.