HomeAnnals of Tropical Researchvol. 37 no. 1 (2015)

Evaluation of Bioactive Traits of (L.) Eclipta alba Hassk. Root Exudates

Nabanita Chakraborty | Soma Rani Patra | Suparna Mandal Biswas

 

Abstract:

Eclipta alba (L.) Hassk (Asteraceae) is a branched herbaceous plant known for its curative properties against various tropical and sub-tropical diseases. In India, it is commonly known as Bhringaraj and Karisilakanni and in Bengali it is called keshut. The extensive growth of the plant in moist areas of diverse topology indicates its invasiveness and signifies its intense allelopathic activity. Morphologically the plant bears soft and sessile stem. In view of this allelopathic potential, the roots of the plants are considered as a vital biochemical mediator to the environment. Hence, the present study attempts to evaluate the allelopathic activity of the root exudates ofE. alba. Amongst the major solvent extracts from the roots, the methanol fraction was found to possess significant antimicrobial activity against microbes with multiple hosts and environment. Bioassay on crop germination establishes it as a natural agricultural resource for fertilizer. The experimental finding inferred statistical significance at 0.001 level and validates practicalimplication.



References:

  1. BISWAS, S.M., BHATTACHARYA, S., CHANDA, S. and KUMAR, L., 2009. 3, 4-dihydroxy benzyl ester derivative, a potent biopesticide isolated from leaves of Tectona grandis, L., Biopesticide Intl., 5:24-34.
  2. DAYAN, F.E., ROMAGNI, J.G. and DUKE, S.O. 2000. Investigating the mode of action of natural phytotoxins. J. Chem Ecol., 26:2079-2094.
  3. DUKE, S.O., DAYAN, F.E., ROMAGNI J.G. and RIMANDO, A.M. 2000. Natural products as sources of herbicides: current status and future trends. Weed Res. 10:99-111.
  4. EINHELLIG, F.A. 2004. Mode of allelochemical action of phenolic compounds; in Allelopathy, chemistry and mode of action of allelochemicals (eds) MACIAS F.A., GALINDO J.C.G., MOLINILLO J.M.G. and CUTLER H.G. (Boca Raton: CRC Press).
  5. INDERJIT, S. 1996. Plant phenolics in allelopathy. Botanical Review 62:186-202.
  6. INDERJIT, S. and MUKERJI, K.G. 2006. Discovery and evaluation of natural product based fungicides for Disease Control of Small Fruits; Allelochemicals: Biological Control of Plant Pathogens and Diseases, Springer, Dordrecht, Netherlands.
  7. KHANH, T.D., CHUNG, I.M., XUAN, T.D. and TAWATA, S. 2005. The Exploitation of Crop Allelopathy in Sustainable Agricultural Production. J. Agron. Crop Sci. 191:172-184.
  8. MITHUN, N.M., SHASHIDHARA, S. 2011. Eclipta alba (L.) A review on its phytochemical and pharmacological profile. Pharmacologyonline 1:345-357.
  9. MANDAL, S. 2001. Allelpathic activity of root exudates from Leonurus sibiricus L. (Raktodrone). Weed Biol. and Mgt., 1:170-175.
  10. RICE, E.L. 1984. Allelopathy 2nd edition, Orlando: Academic Press.