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Fatemeh Rahimi, Siamak Rahmnapour, Saeed Rezaee, Kambiz Larijani,
Volume 9, Issue 2 ((Spring and Summer) 2020)
Abstract

Rahimi F, Rahmanpour S, Rezaei S, Larijani K (2020). Identification of growth inhibitor of Sclerotinia sclerotiorum in Indian mustard leaf. Plant Pathology Science
9(2):28-36.       DOI: 10.2982/PPS.9.2.28.

Introduction: Sclerotinia sclerotiorum is the causal agent of white rot in aerial parts of a wide range of plants. The aim of this study was to compare the reaction of living tissue of Indian mustard leaves on the growth of this fungus under open and closed leaf stomata conditions. Materials and Methods: The pure isolate of the fungus was prepared by the hyphal-tip method on water-agar medium. An experiment was conducted in a fully randomized design with four treatments. The formation of fungal growth inhibiting compounds in the leaf tissue of all treatments was examined using GC-MS.
Results: Analysis of variance of the experimental data showed that the diameter of the fungal colony was significantly smaller in the treatment with open leaf stomata than in the other treatments. Gas chromatography data analysis showed that 1-propene-3-isothiocyanate as a volatile compound inhibits fungal growth in this treatment. Conclusion: The production of the volatile allyl isothiocyanate compound in Indian mustard leaf inhibits the growth of S. sclerotiorum.
 


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