Pleiotropic effect of the Flowering Locus C on plant resistance and defence against insect herbivores

Détails

ID Serval
serval:BIB_68B0FD79B889
Type
Article: article d'un périodique ou d'un magazine.
Collection
Publications
Titre
Pleiotropic effect of the Flowering Locus C on plant resistance and defence against insect herbivores
Périodique
Journal of Ecology
Auteur(s)
Rasmann S., Sánchez Vilas J., Glauser G., Cartolano M., Lempe J., Tsiantis M., Pannell J.R.
ISSN
0022-0477
Statut éditorial
Publié
Date de publication
2018
Peer-reviewed
Oui
Volume
106
Numéro
3
Pages
1244-1255
Langue
anglais
Résumé
Plants vary widely in the extent to which they defend themselves against herbivores. Because the resources available to plants are often site-specific, variation among sites dictates investment into defence and may reveal a growth-defence trade-off. Moreover, plants that have evolved different life-history strategies in different environments may situate themselves on this trade-off curve differently. For instance, plants that flower later have a longer vegetative life span and may accordingly defend themselves differently than those that flower earlier. Here, we tested whether late-flowering plants, with a longer vegetative life span, invest more in defence than early-flowering plants, using recombinant genotypes of the annual herb Cardamine hirsuta that differ in flowering time as a result of differences in the activity of the major floral repressor Flowering Locus C (FLC). We found that variation at FLC was mainly responsible for regulating flowering time and allocation to reproduction, but this partially depended on where the plants grew. We also found that variation at FLC mediated plant allocation to defence, with late-flowering plants producing higher levels of total glucosinolates and stress-related phytohormones. Nonetheless, plant growth and the qualitative values of plant defence and plant resistance against specialist herbivores were mainly independent from FLC.Synthesis. Our results highlight pleiotropic effects associated with flowering-time genes that might influence plant defence and plant-herbivore interactions.
Mots-clé
altitudinal gradients, flowering time, glucosinolates, growth-defence trade-off hypothesis, jasmonic acid, Pieris, plant-herbivore interaction
Web of science
Création de la notice
03/05/2018 14:43
Dernière modification de la notice
20/08/2019 15:23
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