Biochemical and Molecular Variations of Guaiacol Peroxidase and Total Phenols in Bacterial Wilt Pathogenesis of Solanum melongena

Abstract

Plants respond to bacterial pathogen attack by activating various defense responses, which are associated with the accumulation of several factors like defense-related enzymes and inhibitors which serve to prevent pathogen infection. The present study focused on the role of the defense-related enzyme and gene expression of Guaiacol preroxidase and Total phenol content in imparting activities was analyzed by selecting three different eggplant cultivars against bacterial wilt pathogen Ralstonia solanacearum. The temporal pattern of induction of these enzymes showed (42.72 U) maximum activity at 21 h after the pathogen inoculation (hpi) in resistant cultivars. The expressions of defense genes increased 5.5 folds in resistant eggplant cultivars after pathogen inoculation. The total phenol content increased significantly (P<0.05) in resistant cultivars upon pathogen inoculation compared to susceptible and highly susceptible cultivars. The biochemical and molecular markers provided an insight to understand the first line of defense responses in eggplant cultivars upon inoculation with the pathogen.

The activity of β-glucosidase and guaiacol peroxidase in different genotypes of winter oilseed rape (Brassica napus L.) infected by Alternaria black spot fungi

“…Rojas et al (2018) suggest the transcriptional regulation of β-glucosidases and their possible impact in the defense mechanism against fungal Fusarium proliferatum infections in maize. Plants also respond to bacteria (Ralstonia (Prakasha and Sharan 2016). The differences in the activity of both enzymes were visible between the tested varieties.…”

A taxonomic Environmental Study of some Dicotyledon Plant Species Growing Wildly in Western Iraq

“…As for drought plants (Xerophytes): they are plants of stress and strange mutations as well. They are real drought plants distinguished by the small shoot and root systems, which are tens of meters deep [8]. The osmotic pressure of its cellular juice is so high that it increases its ability to absorb water that is unaffordable to other plants, the wilting coefficient percentage [9], where the water is a thin film attached to the soil particles with a force that is difficult for ordinary plants to overcome.…”