You are here: Home
/ Publication Information
Title: Volatile chemical cues guide host location and host selection by parasitic plants
Author: Runyon, Justin B.; Mescher, Mark C.; De Moraes, Consuelo M.;
Source: Science. 313: 1964-1967.
Publication Series: Miscellaneous Publication
Description: The 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.
Keywords: host location, host selection, parasitic plants, plant volatiles, Cuscuta pentagona, Lycopersicon esculentum, Impatiens wallerana, Triticum aestivum
- 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.
- 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.)
XML: View XML
Runyon, 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.
Get the latest version of the Adobe Acrobat reader or Acrobat Reader for Windows with Search and Accessibility