Foliar application of chemical elicitors induces biochemical changes in wheat against the cereal cyst nematode, Heterodera avenae
AbstractThe quantitative estimation of the defence related enzymes peroxidase (PO), polyphenol oxidase (PPO), phenylalanine ammonia lyase (PAL) and lipoxygenase (LOX) was carried out following the foliar application of three synthetic elicitor molecules namely, DL-β-amino-n butyric acid (BABA) (at 2000, 4000, 6000 and 8000 μg/ml), jasmonic acid (JA) and salicylic acid (SA) (at 25, 50, 100 and 200 μg/ml). These chemicals induced resistance responses against the cereal cyst nematode, Heterodera avenae. The enzyme activity increased 5 days after inoculation of H. avenae. The percent increase or decrease of the enzyme activity of LOX, PO, PPO and PAL over the control was in the range 10-270%.