Insect anti-juvenile hormone and juvenile hormone activity from plants in the genusNama |
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| Authors: | B F Binder W S Bowers P H Evans |
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| Institution: | (1) Department of Entomology, University of Arizona, 85721 Tucson, Arizona, USA;(2) Present address: Nematology Laboratory, Agricultural Research Service, USDA, Building 467, BARC-East, 20705 Beltsville, MD, USA |
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| Abstract: | Summary The insect anti-juvenile hormones precocene I and II (7-methoxy-2,2-dimethyl-2H-1-benzopyran and 6,7-dimethoxy-2,2-dimethyl-2H-1-benzopyran) were identified in three of nineNama (Hydrophyllaceae) species. Precocene I occurred inN. lobbii while precocene II occurred inN. hispidum, N. lobbii andN. sandwicense. N. hispidum contained the highest concentration (ca 0.5% dry weight) of precocene II, which was found in the leaves, stems, seed capsules, corolla, glandular trichomes, and seeds. In addition to the anti-juvenile hormone, insect juvenile hormone activity was detected in the organosoluble extracts ofN. rothrockii andN. sandwicense. N. sandwicense is the first plant discovered to contain compounds with both anti- and juvenile hormone activity. |
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| Keywords: | Nama Hydrophyllaceae precocenes anti-juvenile hormones juvenile hormone activity |
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