Back to Search
Start Over
Genetic variants affecting plant size and chemical defenses jointly shape herbivory in Arabidopsis
Genetic variants affecting plant size and chemical defenses jointly shape herbivory in Arabidopsis
- Source :
- BioRxiv, BioRxiv, 2017, ⟨10.1101/156299⟩
- Publication Year :
- 2017
- Publisher :
- HAL CCSD, 2017.
-
Abstract
- Herbivorous insects exhibit strong feeding preferences when choosing among plant genotypes, yet experiments to map loci mediating plant susceptibility to herbivory rarely incorporate host choice. To address this gap, we applied genome-wide association (GWA) mapping to uncover genetic polymorphisms mediating damage from foraging insects (two populations ofScaptomyza flava) across a mixture ofArabidopsis thalianagenotypes in experimental enclosures. The effect of chemical defenses (glucosinolates) on herbivory depended on herbivore genotype. Unlike many studies that minimize the effects of host choice behavior, we also found a large effect of plant size on herbivory—likely through its effect on plant apparency—that was independent of herbivore genotype. These herbivory-associated loci are polymorphic at fine spatial scales, and thus have potential to shape variation in herbivory within natural populations. We also show that the polymorphism with the largest effect on herbivory underlies adaptive latitudinal variation inArabidopsisplant size across Europe. Overall, our results provide genetic support for ecological observations that variation in both chemical defenses and non-canonical defense traits (e.g., plant size and phenology) jointly shapes plant-herbivore interactions.
- Subjects :
- 0106 biological sciences
2. Zero hunger
0303 health sciences
Herbivore
Scaptomyza flava
Ecology
Host (biology)
Phenology
[SDV]Life Sciences [q-bio]
fungi
Foraging
food and beverages
15. Life on land
Biology
biology.organism_classification
010603 evolutionary biology
01 natural sciences
03 medical and health sciences
Arabidopsis
Genotype
[SDE]Environmental Sciences
Arabidopsis thaliana
[SDV.BV]Life Sciences [q-bio]/Vegetal Biology
ComputingMilieux_MISCELLANEOUS
030304 developmental biology
Subjects
Details
- Language :
- English
- Database :
- OpenAIRE
- Journal :
- BioRxiv, BioRxiv, 2017, ⟨10.1101/156299⟩
- Accession number :
- edsair.doi.dedup.....c55b9bec4092c7f2508827fac507679b
- Full Text :
- https://doi.org/10.1101/156299⟩