The er2 gene resistance against powdery mildew infection is associated with enhanced antioxidative protection and defense gene expression

Publication date: Available online 27 February 2019Source: Physiological and Molecular Plant PathologyAuthor(s): Sheetal M. Bhosle, Nitinkumar Marathe, Ragiba MakandarAbstractThe present study was aimed at analyzing host responses of JI-2480 a resistant pea genotype carrying a recessive gene er2 and Arkel-a commercial cultivar susceptible to powdery mildew infection caused by Erysiphe pisi. The cellular responses were analyzed through biochemical, histo-chemical and defense gene expression in a time-course manner. The reactive oxygen species (ROS) scavenging enzymes showed higher activity in JI-2480 post-inoculation compared to Arkel suggesting antioxidant enzymes role in suppressing pathogen-induced oxidative burst. The er2 mediated resistance is likely conferred via maintaining a redox balance between the ROS generated and scavenged, coupled with rapid pathogenesis-related gene 1(PR1) accumulation.
Source: Physiological and Molecular Plant Pathology - Category: Molecular Biology Source Type: research