The effect of methyl salicylate on the induction of direct and indirect plant defense mechanisms in poplar (Populus×euramericana‘Nanlin 895’)

Abstract

The objective of this study was to investigate the effect of different concentrations of methyl salicylate (MeSA) on direct defense and indirect defense in poplar cuttings (Populus × euramericana 'Nanlin 895'). Four defense-related enzyme activities, such as superoxide dismutase (SOD, EC1.15.1.1), oxydoreductases peroxidase (POD, EC1.11.1.7), catalase (CAT, EC1.11.1.6), and polyphenol oxidase (PPO, EC 1.14.18.1), were measured. The results showed that the SOD activities were induced by 1.0 and 10.0 mM MeSA and the POD activities were induced by MeSA. The CAT activity was induced at low concentrations of MeSA but was inhibited by high concentrations, and the PPO activity was affected by 0.1, 1.0, and 10.0 mM MeSA. Furthermore, the volatiles were detected using gas chromatography-mass spectrometry and gas chromatography. Twenty-one volatile compounds were tentatively identified in the emissions from plant leaves. Of these volatile compounds, (Z)-3-hexen-1-ol and cis-3-hexenyl acetate emissions were the highest. (Z)-3-Nonen-1-ol, (E)-2-hexen-1-ol, 1-octanol, (E,Z)-3,6-nonadien-1-ol, β-ionone, and hexadecanamide were six compounds that were only produced after treatment by 10.0 mM MeSA. These results showed that direct and indirect defense mechanisms in poplars were induced by MeSA.

Effect of methyl salicylate in combination with 1‐methylcyclopropene on postharvest quality and decay caused by Botrytis cinerea in tomato fruit

“…In our study, disease development in tomato fruit caused by B. cinerea was effectively suppressed by MeSA treatment alone. The results were similar to previous studies which found that application of MeSA could inhibit some diseases in some postharvest products . Moreover, we found that combined MeSA+1‐MCP treatment was more effective in controlling fruit gray mold caused by B. cinerea than MeSA treatment alone.…”

“…Salicylic acid (SA), a simple phenolic compound, plays an important role in the development of systemic acquired resistance in different plant tissues . Methyl salicylate (MeSA), a volatile organic compound of the signal transduction pathway, is synthesized from SA and activates the plant defense response . Many studies showed that postharvest treatment with SA or MeSA at appropriate concentrations could enhance resistance to pathogens in postharvest fruits and vegetables such as tomato, mango, jujube, sweet cherry and pomegranate .…”

Differential physiological and biochemical responses of Quercus infectoria and Q. libani to drought and charcoal disease

“…Furthermore, the lower activity levels of enzymes, such as POD and GR, could explain why Q. libani tended to accumulate much more H 2 O 2 under stress. In fact, both oak species modulate the activities of various enzymes such as CAT, SOD and POD which are the major components of the plant defense mechanisms against pathogens (Tang et al ).…”

Effect of methyl salicylate (MeSA), an elicitor on growth, physiology and pathology of resistant and susceptible rice varieties

“…Methyl salicylate (MeSA) is a volatile organic compound which is synthesized from SA. MeSA is associated with induced resistance plant defense which has been used in effective disease control methods 28 29 30 .…”