Studies on the activity of defense enzymes againstAlternaria Chlamydosporathe incitant of leaf blight of chrysanthemum (Dendranthema grandiflorumTzelvev)

Siderophore production by Bacillus subtilis MF497446 and Pseudomonas koreensis MG209738 and their efficacy in controlling Cephalosporium maydis in maize plant

“…Vidhyasekaran ( 1997 ) showed that peroxidase enzyme may be involved in the regulation of plant cell elongation, polysaccharide cross-linking, phenol oxidation and IAA oxidation as well as associated with disease resistance in plants and increases in host plants following pathogen infection (Scott-craiz et al 1995 ). Several previous researches confirmed that addition of PGPR to plants induces the activity of POX enzyme and, therefore, enhances the plant’s disease resistance (Ramamoorthy et al 2001 ; Paul and Sarma 2005 ; Renuka et al 2009 ; Kaur et al 2017 ; Zilli et al 2018 ; Bagy et al 2019 ). In the case of PPO activity, we observed that maize plants inoculated with single inoculation showed 2.75- and 3.14-fold higher activity for T3 (grains inoculated with B. subtilis ) and 5.5- and 4.75-fold for T4 (grains inoculated with P. koreensis ), whereas dual inoculation for T5 (inoculated with a mixture of B. subtilis and P. koreensis ) recorded 7- and 4.75-fold in the 2018 and 2019 seasons, respectively (Fig.…”