INDUCTION OF DISEASE RESISTANCE BY SALICYLIC ACID AND CALCIUM ION AGAINST BOTRYTIS CINEREA IN TOMATO (LYCOPERSICON ESCULENTUM)

Linlin Li; Yu Zou

doi:10.9755/ejfa.2016-10-1515

Authors

Linlin Li Deperment of Biotechnology, College of Environment and Resources, Dalian Nationalities University, Dalian, 116600, China
Yu Zou Deperment of Food Engineering, College of Life Science, Dalian Nationalities University, Dalian, 116600, China

DOI:

https://doi.org/10.9755/ejfa.2016-10-1515

Keywords:

Salicylic acid, Calcium ion, Tomato, Botrytis cinerea, Induced resistance

Abstract

This study evaluated effect of single salicylic acid (SA), calcium ion (Ca2+) or their combination on disease resistance of tomato (Lycopersicon esculentum cv. L402) against fungal pathogen Botrytis cinerea (B. cinerea). Elicitation with single SA, Ca2+ or their combination, particularly combined treatment, caused a remarkable increase (p<0.05) in accumulation of hydrogen peroxide (H2O2) and superoxide anion (O2-), phenylalanine ammonia-lyase (PAL) activity, expression level of PR (pathogenesis related protein) gene in tomato plants and resulted in elevating resistance against B. cinerea. These results suggested that SA and Ca2+ played important role in induction of disease resistance against B. cinerea. Therefore, SA and Ca2+ might have potential to control gray mold disease of tomato.