Interaction diversity explains the maintenance of phytochemical diversity.
Malus
Interaction diversity hypothesis
phenolics
plant-insect interactions
plant-pathogen interactions
screening hypothesis
secondary metabolites
specialized metabolites
synergy
Journal
Ecology letters
ISSN: 1461-0248
Titre abrégé: Ecol Lett
Pays: England
ID NLM: 101121949
Informations de publication
Date de publication:
Jun 2021
Jun 2021
Historique:
revised:
25
02
2021
received:
17
09
2020
accepted:
26
02
2021
pubmed:
31
3
2021
medline:
21
5
2021
entrez:
30
3
2021
Statut:
ppublish
Résumé
The production of complex mixtures of secondary metabolites is a ubiquitous feature of plants. Several evolutionary hypotheses seek to explain how phytochemical diversity is maintained, including the synergy hypothesis, the interaction diversity hypothesis, and the screening hypothesis. We experimentally tested a set of predictions derived from these hypotheses by manipulating the richness and structural diversity of phenolic metabolites in the diets of eight plant consumers. Across 3940 total bioassays, there was clear support for the interaction diversity hypothesis over the synergy or screening hypotheses. The number of consumers affected by a particular phenolic composition increased with increasing richness and structural diversity of compounds. Furthermore, the bioactivity of phenolics was consumer-specific. All compounds tested reduced the performance of at least one consumer, but no compounds affected all consumers. These results show how phytochemical diversity may be maintained in nature by a complex selective landscape exerted by diverse communities of plant consumers.
Substances chimiques
Phytochemicals
0
Types de publication
Letter
Langues
eng
Sous-ensembles de citation
IM
Pagination
1205-1214Subventions
Organisme : Division of Environmental Biology
ID : 1856776
Organisme : National Institute of Food and Agriculture
ID : 2018-07366
Informations de copyright
© 2021 John Wiley & Sons Ltd.
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