Evolutionary response to coexistence with close relatives: increased resistance against specialist herbivores without cost for climatic-stress resistance

Abstract : Why can hosts coexist with conspecifics or phylogenetically proximate neighbours despite sharingspecialist enemies? Do the hosts evolve increased enemy resistance? If so, does this have costs interms of climatic-stress resistance, or in such neighbourhoods, does climatic-stress select for resis-tances that are multifunctional against climate and enemies? We studied oak (Quercus petraea)descendants from provenances of contrasting phylogenetic neighbourhoods and climates in a 25-year-old common garden. We found that descendants from conspecific or phylogenetically proxi-mate neighbourhoods had the toughest leaves and fewest leaf miners, but no reduction in cli-matic-stress resistance. Descendants from such neighbourhoods under cold or dry climates hadthe highest flavonol and anthocyanin levels and the thickest leaves. Overall, populations facingphylogenetically proximate neighbours can rapidly evolve herbivore resistance, without cost to cli-matic-stress resistance, but possibly facilitating resistance against cold and drought via multifunc-tional traits. Microevolution might hence facilitate ecological coexistence of close relatives andthereby macroevolutionary conservatism of niches.
Complete list of metadatas

Cited literature [50 references]  Display  Hide  Download

https://hal-univ-rennes1.archives-ouvertes.fr/hal-02181398
Contributor : Laurent Jonchère <>
Submitted on : Monday, July 15, 2019 - 11:52:28 AM
Last modification on : Friday, November 8, 2019 - 2:39:45 PM

File

 Restricted access
To satisfy the distribution rights of the publisher, the document is embargoed until : 2019-12-07

Please log in to resquest access to the document

Identifiers

Citation

Mickael Pihain, Pille Gerhold, Alexis Ducousso, Andreas Prinzing. Evolutionary response to coexistence with close relatives: increased resistance against specialist herbivores without cost for climatic-stress resistance. Ecology Letters, Wiley, 2019, 22 (8), pp.1285-1296. ⟨10.1111/ele.13285⟩. ⟨hal-02181398⟩

Share

Metrics

Record views

49