Abstract:
:Castilleja (Scrophulariaceae) species of the western United States contain pyrrolizidine and quinolizidine alkaloids. TheCastilleja obtain the alkaloids by root parasitism on host plants, withSenecio atratus andS. triangularis (Asteraceae) furnishing the pyrrolizidines, and quinolizidines being obtained fromLupinus species andThermopsis montana (Leguminosae). Individual plants within a givenCastilleja species population may be devoid of alkaloids while others have high alkaloid content. No populations have been found which are made up of both pyrrolizidine- and quinolizidine-containing individuals. These results have important implications forCastilleja ecology, for the study of insect herbivores which areCastilleja specialists, and in the development of systems for the investigation of the role of alkaloids as plant defenses.
journal_name
J Chem Ecoljournal_title
Journal of chemical ecologyauthors
Stermitz FR,Harris GHdoi
10.1007/BF01013240subject
Has Abstractpub_date
1987-08-01 00:00:00pages
1917-25issue
8eissn
0098-0331issn
1573-1561journal_volume
13pub_type
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