Publication Date:
2004-07-03
Description:
We transformed the native tobacco, Nicotiana attenuata, to silence its lipoxygenase, hydroperoxide lyase, and allene oxide synthase genes in order to inhibit oxylipin signaling, known to mediate the plant's direct and indirect defenses. When planted into native habitats, lipoxygenase-deficient plants were more vulnerable to N. attenuata's adapted herbivores but also attracted novel herbivore species, which fed and reproduced successfully. In addition to highlighting the value of genetically silencing plants to study ecological interactions in nature, these results show that lipoxygenase-dependent signaling determines host selection for opportunistic herbivores and that induced defenses influence herbivore community composition.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Kessler, Andre -- Halitschke, Rayko -- Baldwin, Ian T -- New York, N.Y. -- Science. 2004 Jul 30;305(5684):665-8. Epub 2004 Jul 1.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Molecular Ecology, Max-Planck-Institute for Chemical Ecology, Hans-Knoll-Strasse 8, Jena 07745, Germany.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/15232071" target="_blank"〉PubMed〈/a〉
Keywords:
Acetates/pharmacology
;
Aldehyde-Lyases/genetics/*metabolism
;
Animals
;
Beetles/physiology
;
Bicyclo Compounds/metabolism
;
Cyclopentanes/*metabolism/pharmacology
;
Cytochrome P-450 Enzyme System/genetics/*metabolism
;
*Ecosystem
;
Female
;
Gene Expression Profiling
;
Gene Expression Regulation, Plant
;
Gene Silencing
;
Hemiptera/physiology
;
Hexobarbital/metabolism
;
Insects/*physiology
;
Intramolecular Oxidoreductases/genetics/*metabolism
;
Lipoxygenase/genetics/*metabolism
;
Manduca/physiology
;
Nicotine/metabolism
;
Oligonucleotide Array Sequence Analysis
;
Oviposition
;
Oxylipins
;
Signal Transduction
;
Terpenes/metabolism
;
Tobacco/genetics/metabolism/*physiology
;
Transformation, Genetic
Print ISSN:
0036-8075
Electronic ISSN:
1095-9203
Topics:
Biology
,
Chemistry and Pharmacology
,
Computer Science
,
Medicine
,
Natural Sciences in General
,
Physics
Permalink