International Journal of Plant Sciences

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Management of Bacterial Wilt of Tomato Caused by Ralstonia solanacearum by Bacterial Antagonists and Botanicals


Affiliations
1 Department of Plant Pathology, University of Agricultural Sciences, G.K.V.K., Bengaluru (Karnataka), India
     

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Study was undertaken to know the effective management strategy through novel bio control agents and botanicals against Ralstonia solanacearum a dreaded pathogen causing bacterial wilt of tomato. The study revealed that Bacillus subtilis was found to be most effective in inhibiting the growth of the pathogen followed by Pseudomonas fluorescens, by producing an inhibition zone of 22.50 mm and 18.00 mm in diameter, respectively under in vitro conditions. However, among plant extract tested Isabgol seed extract was found to be highly inhibitory to the growth of the pathogen in which inhibition of 22.00, 19.50 and 18.00 mm was observed at 1:0, 1:1 and 1:5 dilutions. Similarly under field condition, Bacteriophages and Bacillus subtilis were found to be very effective in reducing the disease incidence by 72.50 per cent and 64.58 per cent with reduced soil population of the pathogen both in soil and rhizosphere.

Keywords

Ralstonia solanacearum, Bacterial Antagonists, Botanicals.
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  • Englebrecht, M.C. (1994). Modification of a semi selective medium for the isolation and quantification of Pseudomonas solanacearum, Bacterial Wilt Newsl., Hayward,A.C.(Ed.), 10:3-5.

  • Hayward, A.C. (1991). Biology and epidemiology of bacterial wilt caused by Pseudomonas solanacearum. Annu. Rev. Phytopathol., 29: 65-87.

  • Karuna, K. (1993). Chemical and biological control of bacterial wilt of tomato (Lycopersicon esculentum Mill) caused by Pseudomonas solanacearum E.F. Smith. M.Sc. (Ag.) Thesis, University of Agricultural Sciences, Bangalore, KARNATAKA (INDIA).

  • Karuna, K. and Khan, A.N.A. (1994). Effect of plant extracts on Pseudomonas solanacearum causing wilt of tomato plants. Indian Phytopath., 47 : 326.

  • Madhiazhagon, K. (2001). Management of bacterial blight disease of rice using bacteriophages. J. Mycol. Pl. Pathol., 31: 302-304.

  • Manjunath, S.V., Khan, A.N.A., Prasanna Kumar, M.K. and Ravi Kumar, M.R. (2003). Biocontrol of bacterial wilt of tomato caused by Ralstonia solanacearum. In: Proceedings of recent development in the diagnosis and management of plant diseases for meeting global challenges, U.A.S., /IPS (South zone) Dharwad, Dec. 18-20, 2003.

  • Mishenkova, E.L., Petrenko, G.T., Evscenko, D.V. and Pavlenko, L.A. (1983). Inhibition of the growth of phytopathogenic bacteria by preparations from higher plants. Microbiologica Z., 45 : 91-95.

  • Rao, M.V.B. (1976). Bacterial wilt of tomato and eggplant in India. In : Proc. 1st Planning Conf. and Workshop on Ecology and Control of Bacterial wilt caused by Pseudomonas solanacearum. (Eds.) L. Sequeira and A. Kelman, pp 92-94, North Carolina State Univ., Raleigh, 94 pp.

  • Shekhawat, G.S. (1993). Effect of changes in seed sources on potato bacterial wilt. In : Integrated management of bacterial wilt. (Eds.) B. Hardy and E.R. French, International Potato Center, Lima, Peru, 196 pp.

  • Sivasankara rao, T. and Nigam, S.S. (1987). Antibacterial study of some Indian essential oils. Indian Perfumer, 22: 118-119.

  • Sunaina, V., Kishore, V., Shekhawat, G.S. and Kumar, M. (1997). Control of bacterial wilt of potato in naturally infested soils by bacterial antagonists. J. Pl. Dis. Prot., 104:362-369.

  • Venkatesh (1988). Studies on Pseudomonas solanacearum E.F. Smigh, causing wilt disease on solanaceous and non-solanaceous hosts. M.Sc. (Ag.) Thesis, University of Agricultural Sciences, Bangalore, KARNATAKA (INDIA).

  • Yabuuchi, E., Kosako., Yano, I., Hotta, H. and Nishiuchi, Y. (1995). Transfer of two Burkholderia and an Alcaligenes species to Ralstonia Gen. Nov. Proposal of Ralstonia pickettii (Ralston, Palleroni and Doudoroff 1973) Comb. Nov. Ralstonia solanacearum (Smith 1896) Comb. Nov. and Ralstonia eutropha (Davis 1969) Comb. Nov., Microbiol. Immunol., 39 : 897-904.


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  • Management of Bacterial Wilt of Tomato Caused by Ralstonia solanacearum by Bacterial Antagonists and Botanicals

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Authors

C. R. Jahir Basha
Department of Plant Pathology, University of Agricultural Sciences, G.K.V.K., Bengaluru (Karnataka), India
C. P. Manjula
Department of Plant Pathology, University of Agricultural Sciences, G.K.V.K., Bengaluru (Karnataka), India
M. K. Prasanna Kumar
Department of Plant Pathology, University of Agricultural Sciences, G.K.V.K., Bengaluru (Karnataka), India

Abstract


Study was undertaken to know the effective management strategy through novel bio control agents and botanicals against Ralstonia solanacearum a dreaded pathogen causing bacterial wilt of tomato. The study revealed that Bacillus subtilis was found to be most effective in inhibiting the growth of the pathogen followed by Pseudomonas fluorescens, by producing an inhibition zone of 22.50 mm and 18.00 mm in diameter, respectively under in vitro conditions. However, among plant extract tested Isabgol seed extract was found to be highly inhibitory to the growth of the pathogen in which inhibition of 22.00, 19.50 and 18.00 mm was observed at 1:0, 1:1 and 1:5 dilutions. Similarly under field condition, Bacteriophages and Bacillus subtilis were found to be very effective in reducing the disease incidence by 72.50 per cent and 64.58 per cent with reduced soil population of the pathogen both in soil and rhizosphere.

Keywords


Ralstonia solanacearum, Bacterial Antagonists, Botanicals.

References