Does the generalist parasitic plant Cuscuta campestris selectively forage in heterogeneous plant communities?

Détails

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Etat: Serval
Version: de l'auteur
ID Serval
serval:BIB_69F8BC27F11F
Type
Article: article d'un périodique ou d'un magazine.
Collection
Publications
Titre
Does the generalist parasitic plant Cuscuta campestris selectively forage in heterogeneous plant communities?
Périodique
New Phytologist
Auteur(s)
Koch A.M., Binder C., Sanders I.R.
Statut éditorial
Publié
Date de publication
2004
Volume
162
Numéro
1
Pages
147-155
Notes
802PL NEW PHYTOL
Résumé
Cuscuta spp. are holoparasitic plants that can simultaneously parasitise several host plants. It has been suggested that Cuscuta has evolved a foraging strategy based on a positive relationship between preuptake investment and subsequent reward on different host species. Here we establish reliable parasite size measures and show that parasitism on individuals of different host species alters the biomass of C. campestris but that within host species size and age also contributes to the heterogeneous resource landscape. We then performed two additional experiments to test whether C. campestris achieves greater resource acquisition by parasitising two host species rather than one and whether C. campestris forages in communities of hosts offering different rewards (a choice experiment). There was no evidence in either experiment for direct benefits of a mixed host diet. Cuscuta campestris foraged by parasitising the most rewarding hosts the fastest and then investing the most on them. We conclude that our data present strong evidence for foraging in the parasitic plant C. campestris.
Web of science
Open Access
Oui
Création de la notice
19/11/2007 11:31
Dernière modification de la notice
08/05/2019 19:54
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