Skip to Main Content
Volatile chemical cues guide host location and host selection by parasitic plantsAuthor(s): Justin B. Runyon; Mark C. Mescher; Consuelo M. De Moraes
Source: Science. 313: 1964-1967.
Publication Series: Miscellaneous Publication
PDF: View PDF (250 B)
DescriptionThe importance of plant volatiles in mediating interactions between plant species is much debated. Here, we demonstrate that the parasitic plant Cuscuta pentagona (dodder) uses volatile cues for host location. Cuscuta pentagona seedlings exhibit directed growth toward nearby tomato plants (Lycopersicon esculentum) and toward extracted tomato-plant volatiles presented in the absence of other cues. Impatiens (Impatiens wallerana) and wheat plants (Triticum aestivum) also elicit directed growth. Moreover, seedlings can distinguish tomato and wheat volatiles and preferentially grow toward the former. Several individual compounds from tomato and wheat elicit directed growth by C. pentagona, whereas one compound from wheat is repellent. These findings provide compelling evidence that volatiles mediate important ecological interactions among plant species.
- You may send email to firstname.lastname@example.org to request a hard copy of this publication.
- (Please specify exactly which publication you are requesting and your mailing address.)
- We recommend that you also print this page and attach it to the printout of the article, to retain the full citation information.
- This article was written and prepared by U.S. Government employees on official time, and is therefore in the public domain.
CitationRunyon, Justin B.; Mescher, Mark C.; De Moraes, Consuelo M. 2006. Volatile chemical cues guide host location and host selection by parasitic plants. Science. 313: 1964-1967.
Keywordshost location, host selection, parasitic plants, plant volatiles, Cuscuta pentagona, Lycopersicon esculentum, Impatiens wallerana, Triticum aestivum
- Parasitism by Cuscuta pentagona attenuates host plant defenses against insect herbivores
- Behavioural responses of wheat stem sawflies to wheat volatiles
- Fuel Pellets from Wheat Straw: The Effect of Lignin Glass Transition and Surface Waxes on Pelletizing Properties
XML: View XML