Effect of MeJA treatment and scale insect attack on the volatile of jujube trees was written by Gong, Sha;Zhang, Yan-feng;Xue, Jiao-liang;Du, Xian-dang;Xie, Ying-ping. And the article was included in Shengwuxue Zazhi in 2012.Reference of 5444-75-7 The following contents are mentioned in the article:
The jujube tree, Ziziphus jujube Mill, is one of the most important economic fruits in north China. Japanese wax scale, Ceroplastes japonicus Green, is a destructive pest in the jujube orchard. This paper studied the changes of the volatile of the jujube trees that were induced with Methyl-Jasmonic (MeJA), an exogenous signaling material, or were attacked by adults of the scale insect, C. japonicus. The headspace volatile trapping instrument was used to collect volatiles from jujube trees. The chem. components of the collected volatiles were analyzed using chromatog./mass spectroscopy (GC/MS). The results showed that the volatile substances were changed both in the components and in emission quantity when the jujube trees treated with MeJA or damaged by the scale insect. Twenty-two components were examined from the volatile samples from the MeJA-treated jujube tree, and their emission quantity was 37347 ng/h. Meanwhile, 24 components were determined in the volatiles from the scale insect-damaged jujube trees and their emission quantity reached 54292 ng/h. In comparison, 14 compounds were detected only in the volatiles of the health trees (as control) and the total emission quantity was 18611 ng/h. The difference reached the significant level either between the MeJA-treated section and the control section or between the scale insect-damaged section and the control section. In which, the increases of terpenoid, alc. and ester compounds are significant in plants induced chem. defense. These compounds were considered to associate with the natural enemy recruitment in the biol. pest control. This study involved multiple reactions and reactants, such as 2-Ethylhexyl benzoate (cas: 5444-75-7Reference of 5444-75-7).
2-Ethylhexyl benzoate (cas: 5444-75-7) belongs to esters. Esters typically have a pleasant smell; those of low molecular weight are commonly used as fragrances and are found in essential oils and pheromones. Because of their lack of hydrogen-bond-donating ability, esters do not self-associate. Consequently, esters are more volatile than carboxylic acids of similar molecular weight.Reference of 5444-75-7
Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics