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ISSN: 2157-7471

Journal of Plant Pathology & Microbiology
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Research Article

Inductions of Defense Response in Tomato against Fusarium Wilt through Inorganic Chemicals as Inducers

S. K. Biswas, N. K. Pandey and Mohd. Rajik*

Department of Plant Pathology, C.S.A. University of Agriculture & Technology, Kanpur-208002, India

*Corresponding Author:
Mohd Rajik
Department of Plant Pathology
C.S.A. University of Agriculture & Technology
Kanpur-208002, India
E-mail: [email protected]

Received date: June 12, 2012; Accepted date: August 04, 2012; Published date: August 10, 2012

Citation: Pandey NK, Biswas SK, Rajik M, Prasad R, Bisen K, et al. (2012) Inductions of Defense Response in Tomato against Fusarium Wilt through Inorganic Chemicals as Inducers. J Plant Pathol Microb 3:128. doi:10.4172/2157- 7471.1000128

Copyright: © 2012 Pandey NK, et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

Abstract

Pre-foliar spray with indole acetic acid, metalaxyl, dipotassium hydrogen orthophosphate, hydrogen peroxide, calcium chloride, salicylic acid and ferric chloride as inducers provided induced resistance in plant against F. o. f.sp. lycopersici, resulting in a decline in the disease incidence from 90.96 to 9.30% after 15 days of pathogen inoculation. The minimum disease incidence (9.30%) was reported from calcium chloride treated plants. Challenge inoculation with abiotic inducers sensitized the seedling to produce increased level of soluble protein. The maximum increase of soluble protein content was found in calcium chloride treated plant showing 35.93, 36.27 and 35.22 mg/g of fresh leaves at 5, 10 and 15 days of pathogen inoculation. Similarly, phenol content was also found to be maximum in calcium chloride treated plant, representing 2.45, 2.76 and 2.67 mg/g of fresh leaves at 5, 10 and 15 days of inoculation. Correlation coefficient analysis revealed that there was negative correlation (r = -0.6214, -0.5867 and -0.5484) between disease severity and soluble protein content after 5, 10 and 15 days of treatment. Similarly, total phenol content also showed negative correlation (r = -0.5370, -0.5656 and -0.4225) with disease incidence. Protein profiling by SDS-PAGE revealed that pre-foliar spray with calcium chloride synthesizes new proteins representing maximum number of 14 protein bands. The genomic DNA was further investigated using 5 universal ITS primers alone and in combination with each other as forward and reverse of Genei series showing all monomorphic bands at 350 bp as compared to 100 bp DNA ladder marker. All the treatments from T1 to T8 of tomato variety, Azad T6 shows the unique identification of combination with ITS primer 1and 4.

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