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Influence of Xanthium indicum L. water extracts on DNA and RNA contents of green gram (Phaseolus radiatus L.)

Author Affiliations

  • 1Department of Botany, Aska Science College, Aska-761111, Dist. Ganjam, Odisha, India

Int. Res. J. Environment Sci., Volume 6, Issue (1), Pages 22-27, January,22 (2017)

Abstract

Nucleic acids are molecules which act as intelligent hinge and containing nitrogen compound, some sugar and an acid. Due to its structural stoichiometry, it is highly stable form among the all macromolecules. Inspite of its stable structure, influx of allelochemicals and other metabolites to cell matrix develop a stress condition which is susceptible to damage of nucleic acids and their internal metabolic processes. In order to find out the allelopathic effect Xanthium indicum L. allelochemicals on nucleic acids of green gram, a pot culture experiment was conducted with different concentrations of various types of aqueous leachate of test weed. The results showed that different concentrations of various types of aqueous leachate of test weed (5, 10, 15 and 20 %) were exhibited a significant negative correlations with increase in the various types of leachate concentrations of test weed and positive correlations with increase in growth period upto 10 DAS thereafter a negative correlation were marked. This indicates that allelopathic stress of various types of leachates of Xanthium indicum L. were phytotoxic to green gram, when incubation period increase (i.e. 10 days after sowing) the degree of toxicity was higher, this might have due to the increase of more allelochemicals by cellular absorption and it attribute to change the cell matrix. The changed internal milieu of cellular matrix with higher concentration of allelochemicals and other intermediate dynamic unstable molecular species generated by allelopathic stress are reduced or disorganized the DNA and RNA contents. This piece of investigation reveals the adverse effect of allelochemical of Xanthium indicum L. on DNA and RNA contents of green gram.

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