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  • Title: Susceptibility against grey blight disease-causing fungus Pestalotiopsis sp. in tea (Camellia sinensis (L.) O. Kuntze) cultivars is influenced by anti-oxidative enzymes.
    Author: Palanisamy S, Mandal AK.
    Journal: Appl Biochem Biotechnol; 2014 Jan; 172(1):216-23. PubMed ID: 24068475.
    Abstract:
    Reactive oxygen species (ROS) production is the first level of response by a host during stress. Even though the ROS are toxic to cell, when present in a limited amount, they act as a signalling molecule for the expression of defence-related genes and later are scavenged by either enzymatic or non-enzymatic mechanisms of the host. The different anti-oxidative enzymes like glutathione reductase (GR), superoxide dismutase (SOD), catalase (CAT), ascorbate peroxidase (APO), peroxidase (POD) and polyphenol oxidase (PPO) were estimated, and their activities were compared between infected and healthy leaves of the tolerant and susceptible cultivars of tea. The infected leaves of the susceptible cultivars registered higher amount of enzyme activity when compared with the tolerant cultivars. The study reveals that the more anti-oxidative enzymes, the more susceptible the cultivar will be.
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