Resource choice in Cuscuta europaea

Individual stems with growing tips of dodder (Cuscuta europaea) were transplanted onto host plants (hawthorn) of varying nutritional status. The parasite was more likely to coil on ("accept") hosts of high nutritional status and grow away from ("reject") hosts of poor quality. Do...

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Veröffentlicht in:	Proceedings of the National Academy of Sciences - PNAS 1992-12, Vol.89 (24), p.12194-12197
1. Verfasser:	Kelly, C.K. (University of North Texas, Denton, TX)
Format:	Artikel
Sprache:	eng
Schlagworte:	Agronomy. Soil science and plant productions BESOIN NUTRITIONNEL Biological and medical sciences Branches CUSCUTA Cuscuta europaea Flowers & plants Foodborne illnesses Fundamental and applied biological sciences. Psychology Host plants HOTE HUESPEDES Multidisciplinary Sciences NECESIDADES DE NUTRIENTES Parasite hosts Parasites Parasitism Parasitism and symbiosis Plant growth Plant nutrition Plant physiology and development PLANTAS PARASITAS PLANTE PARASITE Plants RELACIONES HUESPED PARASITO RELATION HOTE PARASITE Science & Technology Science & Technology - Other Topics Stems
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Beschreibung
Zusammenfassung:	Individual stems with growing tips of dodder (Cuscuta europaea) were transplanted onto host plants (hawthorn) of varying nutritional status. The parasite was more likely to coil on ("accept") hosts of high nutritional status and grow away from ("reject") hosts of poor quality. Dodder exhibits this acceptance/rejection response before taking up any food from the host, so it is possible to dissociate active choice from the passive effects of growth and mortality. Probability of acceptance is gauged to expected reward.
ISSN:	0027-8424 1091-6490
DOI:	10.1073/pnas.89.24.12194