ISSN:
1423-0445
Keywords:
chemical defense
;
insect repellent
;
endangered species
;
terpenes
;
trans-pulegol
;
Labiatae
;
Dicerandra
;
Pyralidae
;
Pyrausta
Source:
Springer Online Journal Archives 1860-2000
Topics:
Biology
Notes:
Summary Analyses of leaf extracts ofDicerandra frutescens, a highly aromatic mint plant from central Florida listed as an endangered species, revealed presence of 12 closely related monoterpenes. The principal of these, (+)—trans-pulegol, is a new natural product, the synthesis of which is described. The terpenes are produced in glandular capsules that release their contents upon injury of the leaf. Data from bioassays with ants and cockroaches indicate that the terpenes serve for defense against insects.Dicerandra does, however, have a leaf-eating enemy, the caterpillar of a pyralid moth,Pyrausta panopealis. The discovery of a new natural product from an endangered species raises questions about the chemical implications of species extinction.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF01240583
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