NevoValentaTevlinEtAl2017

Référence

Nevo, O., Valenta, K., Tevlin, A.G., Omeja, P., Styler, S.A., Jackson, D.J., Chapman, C.A. and Ayasse, M. (2017) Fruit defence syndromes: the independent evolution of mechanical and chemical defences. Evolutionary Ecology, 31(6):913-923. (Scopus )

Résumé

Plants are prone to attack by a great diversity of antagonists against which they deploy various defence mechanisms, of which the two principle ones are mechanical and chemical defences. These defences are hypothesized to be negatively correlated due to either functional redundancy or a trade-off, i.e., plants which rely on increased mechanical defence should downregulate their degree of chemical defence and vice versa. A competing hypothesis is that different defences perform distinct functions and draw from different pools of resources, which should result in their independent evolution. We examine these competing hypotheses using two independent datasets of fleshy fruits we collected from Madagascar and Uganda. We sampled mechanical defences, indexed by fruit puncture resistance, and defensive defences, indexed by defensive volatile organic compounds, and examined their associations using phylogenetically-controlled models. In both systems, we found no correlation between mechanical and chemical defences, thus supporting the independent evolution hypothesis. This implies that fruit defence mechanisms reflect a more complex array of selection pressures and constraints than previously perceived. © 2017, Springer International Publishing AG.

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@ARTICLE { NevoValentaTevlinEtAl2017,
    AUTHOR = { Nevo, O. and Valenta, K. and Tevlin, A.G. and Omeja, P. and Styler, S.A. and Jackson, D.J. and Chapman, C.A. and Ayasse, M. },
    TITLE = { Fruit defence syndromes: the independent evolution of mechanical and chemical defences },
    JOURNAL = { Evolutionary Ecology },
    YEAR = { 2017 },
    VOLUME = { 31 },
    NUMBER = { 6 },
    PAGES = { 913-923 },
    NOTE = { cited By 1 },
    ABSTRACT = { Plants are prone to attack by a great diversity of antagonists against which they deploy various defence mechanisms, of which the two principle ones are mechanical and chemical defences. These defences are hypothesized to be negatively correlated due to either functional redundancy or a trade-off, i.e., plants which rely on increased mechanical defence should downregulate their degree of chemical defence and vice versa. A competing hypothesis is that different defences perform distinct functions and draw from different pools of resources, which should result in their independent evolution. We examine these competing hypotheses using two independent datasets of fleshy fruits we collected from Madagascar and Uganda. We sampled mechanical defences, indexed by fruit puncture resistance, and defensive defences, indexed by defensive volatile organic compounds, and examined their associations using phylogenetically-controlled models. In both systems, we found no correlation between mechanical and chemical defences, thus supporting the independent evolution hypothesis. This implies that fruit defence mechanisms reflect a more complex array of selection pressures and constraints than previously perceived. © 2017, Springer International Publishing AG. },
    AFFILIATION = { Institute of Evolutionary Ecology and Conservation Genomics, University of Ulm, Helmholtzstr. 10-1, Containerstadt, Ulm, 89081, Germany; McGill School of the Environment, Department of Anthropology, McGill University, 855 Sherbrooke St. W, Montreal, H3A 2T7, Canada; Department of Chemistry, University of Toronto, 80 St. George St, Toronto, M5S 3H6, Canada; Makerere University Biological Field Station, Kampala, Uganda; Department of Chemistry, University of Alberta, 11227 Saskatchewan Dr, Edmonton, T6G 2G2, Canada; Department of Chemistry, York University, 4700 Keele St, Toronto, M3J 1P3, Canada },
    AUTHOR_KEYWORDS = { Animal-plant interactions; Chemical defence; Constraints; Fleshy fruits; Mechanical defence; Trade-off },
    DOCUMENT_TYPE = { Article },
    DOI = { 10.1007/s10682-017-9919-y },
    SOURCE = { Scopus },
    URL = { https://www.scopus.com/inward/record.uri?eid=2-s2.0-85029527283&doi=10.1007%2fs10682-017-9919-y&partnerID=40&md5=03775e844a6f809ece15bc0453f7ebbc },
}

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