Publication Date:
2001-03-17
Description:
Herbivore attack is known to increase the emission of volatiles, which attract predators to herbivore-damaged plants in the laboratory and agricultural systems. We quantified volatile emissions from Nicotiana attenuata plants growing in natural populations during attack by three species of leaf-feeding herbivores and mimicked the release of five commonly emitted volatiles individually. Three compounds (cis-3-hexen-1-ol, linalool, and cis-alpha-bergamotene) increased egg predation rates by a generalist predator; linalool and the complete blend decreased lepidopteran oviposition rates. As a consequence, a plant could reduce the number of herbivores by more than 90% by releasing volatiles. These results confirm that indirect defenses can operate in nature.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Kessler, A -- Baldwin, I T -- New York, N.Y. -- Science. 2001 Mar 16;291(5511):2141-4.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Molecular Ecology, Max-Planck-Institute for Chemical Ecology, Jena 07745, Germany.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11251117" target="_blank"〉PubMed〈/a〉
Keywords:
Animals
;
Beetles/physiology
;
Bicyclo Compounds/metabolism/pharmacology
;
Female
;
Heteroptera/physiology
;
Hexanols/metabolism/pharmacology
;
Host-Parasite Interactions
;
Insects/*physiology
;
Manduca/physiology
;
*Monoterpenes
;
Organic Chemicals/*metabolism/pharmacology
;
Oviposition/drug effects
;
*Plants, Toxic
;
Terpenes/metabolism/pharmacology
;
Tobacco/*metabolism/*parasitology
;
Volatilization
Print ISSN:
0036-8075
Electronic ISSN:
1095-9203
Topics:
Biology
,
Chemistry and Pharmacology
,
Computer Science
,
Medicine
,
Natural Sciences in General
,
Physics
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