Cucurbitane triterpenoid oviposition deterrent from Momordica charantia to the leafminer, Liriomyza trifolii

Females of Liriomyza trifolii, a polyphagous leafminer, are often deterred from ovipositing on Momordica charantia leaves. The methanol extract of M. charantia leaves showed strong oviposition deterrent activity against L. trifolii females on the host plant leaf when it was dipped in the methanol ex...

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Bibliographic Details
Published in:Bioscience, biotechnology, and biochemistry biotechnology, and biochemistry, 2005-09, Vol.69 (9), p.1706-1710
Main Authors: Mekuria, D.B.(Kochi Univ., Nankoku (Japan). Faculty of Agriculture), Kashiwagi, T, Tebayashi, S, Kim, C.S
Format: Article
Language:English
Subjects:
7,23-dihydroxy-3-O-malonylcucurbita-5,24-dien-19-al
Animals
Biological and medical sciences
Biological Assay
Diptera - drug effects
Female
Fundamental and applied biological sciences. Psychology
LIRIOMYZA TRIFOLII
Methanol - chemistry
MOMORDICA CHARANTIA
Momordica charantia - chemistry
momordicine I
OVIPOSICION
OVIPOSITION
Oviposition - drug effects
oviposition deterrent
Phaseolus - chemistry
Plant Leaves - chemistry
PONTE
REPELENTES
REPELLENTS
REPULSIF
Sterols - chemistry
Sterols - pharmacology
Triterpenes - chemistry
Triterpenes - pharmacology
TRITERPENOIDE
TRITERPENOIDOS
TRITERPENOIDS
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Summary:Females of Liriomyza trifolii, a polyphagous leafminer, are often deterred from ovipositing on Momordica charantia leaves. The methanol extract of M. charantia leaves showed strong oviposition deterrent activity against L. trifolii females on the host plant leaf when it was dipped in the methanol extract at a concentration of 1 g of fresh leaf equivalent/ml. Bioguided fractionation of the methanol extract of the leaves of M. charantia led to the isolation of a new cucurbitane triterpenoid, 7,23-dihydroxy-3-O-malonylcucurbita-5, 24-dien-19-al, along with another known compound, momordicine I. Both 7,23-dihydroxy-3-O-malonylcucurbita-5,24-dien-19-al and momordicine I respectively had significant ovipositing deterrent effect towards the adult females of L. trifolii on host plant leaves treated at concentrations of 3.25 and 33.60 mu g/cm(2).
ISSN:0916-8451
1347-6947
DOI:10.1271/bbb.69.1706