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Experientia

, Volume 47, Issue 2, pp 199–201 | Cite as

Insect anti-juvenile hormone and juvenile hormone activity from plants in the genusNama

  • B. F. Binder
  • W. S. Bowers
  • P. H. Evans
Research Articles

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.

Key words

Nama Hydrophyllaceae precocenes anti-juvenile hormones juvenile hormone activity 

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Copyright information

© Birkhäuser Verlag Basel 1991

Authors and Affiliations

  • B. F. Binder
    • 1
  • W. S. Bowers
    • 1
  • P. H. Evans
    • 1
  1. 1.Department of EntomologyUniversity of ArizonaTucsonUSA

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