A1 Vertaisarvioitu alkuperäisartikkeli tieteellisessä lehdessä

Population-wide shifts in herbivore resistance strategies over succession




TekijätKalske A, Kessler A

KustantajaWILEY

Julkaisuvuosi2020

JournalEcology

Tietokannassa oleva lehden nimiECOLOGY

Lehden akronyymiECOLOGY

Artikkelin numeroe03157

Vuosikerta101

Numero11

Sivujen määrä11

ISSN0012-9658

eISSN1939-9170

DOIhttps://doi.org/10.1002/ecy.3157

Verkko-osoitehttps://doi.org/10.1002/ecy.3157


Tiivistelmä
As a strategic cost-saving alternative to constitutive resistance, induction of resistance against herbivores in plants can be especially beneficial when enemies are scarce or variable in abundance. Although probably describing the two ends of a continuum, constitutive and induced resistance strategies have long been observed to trade off within species. Examining these traits among populations along a successional gradient can help explain how temporally variable environments can maintain genetic variation and how ecosystem processes are affected by shifting plant resistance trait expression over time. Here we leverage large experimental plots that represent a chronosequence of succession up to 15 yr in combination with common garden experiments to examine changes in the selective environment and genetic differences in tall goldenrod's (Solidago altissima) constitutive and induced resistance. We show that resistance against a specialist herbivoreTrirhabda virgatawas inducible in the plants originating from midsuccession, which coincides with the largest loads of herbivores. The flavonoid compound content of the leaves varied with successional stage of the population of origin, which is indicative of constitutive differences in secondary metabolite production. Finally, there was a clear trade-off between constitutive and induced resistance. Our study indicates that selection for resistance traits within a population can be highly variable over time and likely result in genetically determined shifts of resistance strategies over relatively short time periods via genotype sorting.



Last updated on 2024-26-11 at 17:58