期刊
OIKOS
卷 2022, 期 2, 页码 -出版社
WILEY
DOI: 10.1111/oik.08332
关键词
chemical ecology; fruit defense; phytochemical diversity; Piper; secondary metabolites; seed defense; seed dispersal; specialized metabolites; toxic fruit
类别
资金
- National Science Foundation [1953888, 1856776, 1953934, 1953938]
- Direct For Biological Sciences
- Division Of Environmental Biology [1856776] Funding Source: National Science Foundation
- Direct For Biological Sciences
- Division Of Integrative Organismal Systems [1953938, 1953888, 1953934] Funding Source: National Science Foundation
The study suggests that plants produce diverse secondary metabolites due to their beneficial interactions with other organisms. By focusing on fruits as hubs of interactions, the research demonstrates that fruits can harbor higher levels of phytochemical diversity compared to leaves. Integrating chemical ecology with fruit-frugivore interaction research can provide new insight into plant trait evolution.
Plants produce an enormous diversity of secondary metabolites, but the evolutionary mechanisms that maintain this diversity are still unclear. The interaction diversity hypothesis suggests that complex chemical phenotypes are maintained because different metabolites benefit plants in different pairwise interactions with a diversity of other organisms. In this synthesis, we extend the interaction diversity hypothesis to consider that fruits, as potential hotspots of interactions with both antagonists and mutualists, are likely important incubators of phytochemical diversity. We provide a case study focused on the Neotropical shrub Piper reticulatum that demonstrates: 1) secondary metabolites in fruits have complex and cascading effects for shaping the outcome of both mutualistic and antagonistic fruit-frugivore interactions, and; 2) fruits can harbor substantially higher levels of phytochemical diversity than leaves, even though leaves have been the primary focus of plant chemical ecology research for decades. We then suggest a number of research priorities for integrating chemical ecology with fruit-frugivore interaction research and make specific, testable predictions for patterns that should emerge if fruit interaction diversity has helped shape phytochemical diversity. Testing these predictions in a range of systems will provide new insight into the mechanisms driving frugivory and seed dispersal and shape an improved, whole-plant perspective on plant chemical trait evolution.
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