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Shukla, Pradeep K.
- In Vitro Screening of Plant Growth Promoting Rhizobacteria to Control Bacterial Wilt (Ralstonia solanacearum) of Tomato (Lycopersicon esculentum)
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Authors
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1 Department of Biological Sciences, Sam Higginbottom Institute of Agriculture, Technology and Sciences, Allahabad (U.P.), IN
1 Department of Biological Sciences, Sam Higginbottom Institute of Agriculture, Technology and Sciences, Allahabad (U.P.), IN
Source
International Journal of Plant Sciences, Vol 11, No 2 (2016), Pagination: 224-227Abstract
Ralstonia solanacearum is the causative agent of bacterial wilt that causes considerable damages in the yield of various crop plants. The intent of the study was to evaluate potential of bacterial antagonists to suppress bacterial wilt disease development and evaluate the role of the strains as plant growth-promoting rhizobacteria (PGPR) in tomato. One hundred rhizosphere bacterial isolates were screened against virulent strain of Ralstonia solanacearum. After in vitro screening 10 antagonistic strains designated PR3, PR17, PR26, 1NAB15, 1NAB20, 3NAA1, 3NAA2, 2CBA2, 2CBA4, 2CBA18 showed antagonistic effect by producing inhibition zone supressing the growth of R. Solanacearum. The isolate PR3 showed the highest inhibition zone measuring 33.3mm whereas 1NAB15 showed the lowest zone measuring 10mm. The present study, therefore, suggests that the use of PGPR isolates which showed the antagonistic activity can be used as inoculants/ bioantagonists might be beneficial for the control of bacterial wilt of tomato in field studies.Keywords
Ralstonia solanacearum, PGPR, Bacterial Wilt, Tomato.
References
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- Kelman, A. (1998). One hundred and one years of research on bacterial wilt. In bacterial wilt disease: molecular and ecological aspects. Prior, P., Allen, C., Elphinstone, J. (Eds)., Springer-Verlag, Berlin Heidelberg.
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- McLaughlin, R.J., Sequeira, L. and Weingartner, D.P. (1990). Biocontrol of bacterial wilt of potato with an avirulent strain of Pseudomonas solanacearum: interactions with ischolar_main-knot nematodes. American Potato J., 67 (2) : 93-107.
- Pradhanang, P.M., Ji, P., Momol, M.T., Olson, S.M., Mayfield, J.L. and Jones, J.B. (2005). Application of acibenzolarS-methyl enhances host resistance in tomato against Ralstonia solanacearum. Pl. Dis., 89 : 989-993.
- Evaluation of Exogenous Application of 24-Epibrassinolide and Silicon on Mophological Characters of Salt Stressed Wheat Varieties
Abstract Views :309 |
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Authors
Affiliations
1 Department of Biological Sciences, School of Basic Sciences, Sam Higginbottom Institute of Agriculture, Technology and Sciences, Allahabad (U.P.), IN
2 Department of Molecular and Cellular Engineering, Jacob School of Biotechnology and Bioengineering, Sam Higginbottom Institute of Agriculture, Technology and Sciences, Allahabad (U.P.), IN
3 Department of Biological Sciences, School of Basic Sciences, Sam Higginbottom Institute of Agriculture, Technology and Sciences, Allahabad (U.P.), IN
1 Department of Biological Sciences, School of Basic Sciences, Sam Higginbottom Institute of Agriculture, Technology and Sciences, Allahabad (U.P.), IN
2 Department of Molecular and Cellular Engineering, Jacob School of Biotechnology and Bioengineering, Sam Higginbottom Institute of Agriculture, Technology and Sciences, Allahabad (U.P.), IN
3 Department of Biological Sciences, School of Basic Sciences, Sam Higginbottom Institute of Agriculture, Technology and Sciences, Allahabad (U.P.), IN
Source
Asian Science, Vol 11, No 1 (2016), Pagination: 1-5Abstract
Wheat is a major cereal crop in many parts of the world and it is commonly known as king of cereals. Brassinosteroids (BRs) are growth-promoting natural products found at low levels in pollen, seeds, and young vegetative tissues throughout the plant kingdom. An experiment was conducted to evaluate the effect of different combinations of Silicon (Si) and 24-epibrassinolide (EBL) on wheat varieties grown under 100 mM salt stress. The result showed that shoot length of plant increased with the application of EBL and Silicon and it was increased the maximum in salt tolerant varieties in comparison to non-tolerant. Whilst, reduction was observed in ischolar_main length along with the increasing concentration of EBL. The effect of different combinations of silicon and 24-epibrassinolidealso increased the germination percentage (%) in tolerant and non-tolerant wheat varieties.