Research Report

Induced Systemic Resistance and Their Implications in Host Resistance to Physic Nut against Leaf Blight Disease  

S. Narmadhavathy1 , S. Vanitha1 , G. Karthikeyan1 , T. Raguchander1 , Ramjegathesh Rajendran2
1 Department of Plant Pathology, Centre for Plant Protection Studies, Tamil Nadu Agricultural University, Coimbatore, 641 003, Tamil Nadu, India
2 Department of Life Sciences, Faculty of Science and Agriculture, The University of the West Indies, St. Augustine, Trinidad
Author    Correspondence author
Molecular Microbiology Research, 2013, Vol. 3, No. 3   doi: 10.5376/mmr.2013.03.0003
Received: 04 Jun., 2013    Accepted: 06 Sep., 2013    Published: 10 Dec., 2013
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Preferred citation for this article:

Narmadhavathy et al., 2013, Induced Systemic Resistance and Their Implications in Host Resistance to Physic Nut against Leaf Blight Disease, Molecular Microbiology Research, Vol.3, No.3 20-29 (doi: 10.5376/mmr.2013.03.0003)

Abstract

The aim of this work was to study the Induced systemic resistance and their implications in host resistance to physic nut against leaf blight disease. In pot culture experiment plant treated with Mancozeb (0.2%) and Propiconazole (0.1%) thrice starting from 30 days after planting with an interval of 15 days was significantly superior over all the treatments with the PDI of 18.44 and 19.00 respectively. The plant height was significantly increased in all treated plants ranging from 99.80 cm to 148.25 cm. Plants treated with Pseudomonas fluorescens (Pf1) induces more phenyl alanine ammonia lyase (PAL), peroxidise (PO)¸ poly phenoloxidase (PPO), β-1,3 glucanase, super oxide dismutase (SOD) and phenol activity in treated physic nut plant followed by Bacillus EPCO16 treated plants.

Keywords
Biocontrol agents; Curvularia clavata; Defence enzymes; Leaf Blight; Micro nutrients; Physic nut; Plant products
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