トマト葉に存在するミナミキイロアザミウマの摂食阻害物質 : 単離と同定

概要

論文の詳細を見る
Despite its polyphagous nature, Thrips palmi does not really attack tomato plants. In efforts to elucidate the chemical basis responsible for the tomato's resistance, a crystalline compound possessing strong antifeeding activity for this insect species was isolated from tomato leaves by means of methanol extraction, water/butanol partition, silica gel chromatography, and preparative high-performance liquid chromatography. According to responses to certain test reagents, qualitative and quantitative LC profiles of component sugars, melting point, specific rotation, UV-, IR-, MS-, ^1H-NMR-and ^13C-NMR-spectra, the compound was identified as α-tomatine, a known steroidal glycoalkaloid in tomato plants. The immunity of tomato plants to T. palmi is explained solely by the occurrence of α-tomatine, because T. palmi does not use airborne information (attractants/repellents) to avoid tomato leaves, and tomato leaves apparently provide the required phagostimulants and nutrients.
日本応用動物昆虫学会の論文
1994-05-25