VEGETOS: An International Journal of Plant ResearchOnline ISSN: 2229-4473
Print ISSN: 0970-4078

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Research Article, Vegetos Vol: 30 Issue: 2

Evaluation of Biochemical Changes in Leaves of Tomato Infected with Alternaria Alternata and its Metabolites

Meena M1*, Prasad V2 and Upadhyay RS1
1Department of Botany, Faculty of Science, Banaras Hindu University, Varanasi, India
2Institute of Environment and Sustainable Development, Banaras Hindu University, Varanasi, India
Corresponding author : Mukesh Meena
Department of Botany, Institute of Science, Banaras Hindu University, Varanasi-221005, India
Mob: 08726699266br
E-mail:
[email protected]
Received: February 06, 2017 Accepted: February 22, 2017 Published: February 24, 2017
Citation: Meena M, Prasad V, Upadhyay RS (2017) Evaluation of Biochemical Changes in Leaves of Tomato Infected with Alternaria Alternata and its Metabolites. Vegetos 30:2. doi:10.4172/2229-4473.2017.00020.9

 

Abstract

The present study was carried out to evaluate the biochemical changes occurring in tomato leaves following treatment with leaf spot disease causing pathogen Alternaria alternata and two of its phytotoxic metabolites. Results revealed that the pathogen treatment caused severe foliar necrosis and by 10th day of treatment almost 3/4th of the leaf area was necrotized. A significant decline in the chlorophyll content was observed in the leaves treated with the pathogen and its metabolites. Reducing sugars showed a visible decline in the treated leaves in comparison to the control leaves. When compared with the control an increase in total soluble protein was observed in leaves treated with the pathogen and its metabolites. In case of phenol, a significant enhancement in phenol content of the pathogen and metabolite treated leaves was observed than the amount detected in control leaves. The results indicate that infection of tomato by the leaf spot pathogen Alternaria alternata and its metabolites causes severe alterations in the amount of various biochemical components.

Keywords: Chlorophyll; Metabolites; Pathogen; Phenol; Reducing sugar; Total soluble protein

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