Figure 4: Estimation of chlorophyll, carotenoids and various defense-related enzymes in B. monnieri treated with chitinolytic microbes viz., Chitiniphilus sp. (CHI) and Streptomyces sp. (STR) singly as well as in combinations (with and without M. incognita).

Control: untreated-uninoculated; Control + Mi: untreated M. incognita-inoculated. (a) Chlorophyll a; (b) Chlorophyll b; (c) Carotenoids; (d) Total phenolic content (TPC); (e) Total flavonoid content (TFC); (f) Peroxidase (PO) activity; (g) phenylalanine ammonia lyase (PAL) activity; and (h) polyphenol oxidase (PPO) activity. Error bars indicate the standard error of six replicates. Different letters indicate significant difference between treated and untreated pathogen-inoculated control (LSD test P < 0.05).