Abstract
Abstract Leaf chemistry plays a central role in structuring phyllosphere microbiomes. Plant populations often evolve genetic differences in leaf chemistry across region due to both abiotic and biotic selection pressures, including insect herbivory. Plants in invasive populations may reassociate with native specialist insects, providing an ideal system to examine how herbivory-mediated changes in plant chemistry affect phyllosphere microbiome. Here, we conducted a common garden experiment using Ambrosia artemisiifolia populations differing in leaf chemistry and reassociation history with a specialist beetle—Ophraella communa. We found that plant populations with a longer reassociation history exhibited stronger herbivore resistance and supported phyllosphere communities with higher alpha diversity and more complex composition. These changes were associated with shifts in concentrations of plant metabolites and the expression levels of corresponding biosynthetic genes. The abundance of the fungal pathogens, Golovinomyces, decreased with increasing herbivore resistance, while Pestaliopsis showed the opposite trend. Although reassociation history was linked to population latitude, climatic and soil conditions at the sites of origin also contributed to between-population variation in leaf chemistry and phyllosphere fungal community composition. Our study suggests that genetic differences in leaf chemistry among plant populations can strongly affect herbivore resistance and phyllosphere fungal communities. The observed alignment of reassociation history, chemical traits and phyllosphere fungal communities suggests that herbivore-mediated selection may be a key driver of microbial community evolution in invasive plants.
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Claims 10
Claim · model-written summary
Longer beetle reassociation history was associated with stronger herbivore resistance.
- Taxon
- Ambrosia artemisiifolia
Ambrosia artemisiifoliat0 - Interactor
- Ophraella communa
Ophraella communat1herbivore - Outcome
- herbivore resistancee0
- Direction
- strongere0
- Qualifier
- longer reassociation historye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“plant populations with a longer reassociation history exhibited stronger herbivore resistance”
t0“Ambrosia artemisiifolia”
t1“Ophraella communa”
Claim · model-written summary
Longer reassociation history was associated with higher phyllosphere community alpha diversity.
- Taxon
- Ambrosia artemisiifoliaAmbrosia artemisiifoliat0
- Outcome
- alpha diversitye0
- Direction
- highere0
- Qualifier
- longer reassociation historye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“plant populations with a longer reassociation history exhibited stronger herbivore resistance and supported phyllosphere communities with higher alpha diversity and more complex composition”
t0“Ambrosia artemisiifolia”
Claim · model-written summary
Longer reassociation history was associated with more complex phyllosphere community composition.
- Taxon
- Ambrosia artemisiifoliaAmbrosia artemisiifoliat0
- Outcome
- phyllosphere communitiese0
- Direction
- more complexe0
- Qualifier
- longer reassociation historye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“plant populations with a longer reassociation history exhibited stronger herbivore resistance and supported phyllosphere communities with higher alpha diversity and more complex composition”
t0“Ambrosia artemisiifolia”
Claim · model-written summary
These population changes were associated with metabolite concentration shifts.
- Taxon
- Ambrosia artemisiifoliaAmbrosia artemisiifoliat0
- Outcome
- concentrations of plant metabolitese0
- Qualifier
- These changese0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“These changes were associated with shifts in concentrations of plant metabolites”
t0“Ambrosia artemisiifolia”
Claim · model-written summary
These population changes were associated with biosynthetic gene expression shifts.
- Taxon
- Ambrosia artemisiifoliaAmbrosia artemisiifoliat0
- Outcome
- expression levels of corresponding biosynthetic genese0
- Qualifier
- These changese0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“These changes were associated with shifts in concentrations of plant metabolites and the expression levels of corresponding biosynthetic genes”
t0“Ambrosia artemisiifolia”
Claim · model-written summary
Golovinomyces abundance decreased as herbivore resistance increased.
- Taxon
- Ambrosia artemisiifoliaAmbrosia artemisiifoliat0
- Interactor
- Golovinomyces
.jpg?width=60)
Golovinomycese0pathogen - Outcome
- abundance of the fungal pathogens, Golovinomycese0
- Direction
- decreasede0
- Qualifier
- increasing herbivore resistancee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
.jpg?width=500)
Verbatim
e0“The abundance of the fungal pathogens, Golovinomyces, decreased with increasing herbivore resistance”
t0“Ambrosia artemisiifolia”
Claim · model-written summary
Pestaliopsis abundance showed the opposite trend with herbivore resistance.
- Taxon
- Ambrosia artemisiifoliaAmbrosia artemisiifoliat0
- Interactor
- Pestaliopsise0other
- Outcome
- Pestaliopsise0
- Qualifier
- opposite trende0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“while Pestaliopsis showed the opposite trend”
t0“Ambrosia artemisiifolia”
Claim · model-written summary
Population latitude was linked to reassociation history.
- Taxon
- Ambrosia artemisiifoliaAmbrosia artemisiifoliat0
- Outcome
- reassociation historye0
- Setting
- population latitudee0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“reassociation history was linked to population latitude”
t0“Ambrosia artemisiifolia”
Claim · model-written summary
Origin-site climate and soil contributed to between-population leaf chemistry variation.
- Taxon
- Ambrosia artemisiifoliaAmbrosia artemisiifoliat0
- Outcome
- between-population variation in leaf chemistrye0
- Qualifier
- climatic and soil conditionse0
- Setting
- sites of origine0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“climatic and soil conditions at the sites of origin also contributed to between-population variation in leaf chemistry”
t0“Ambrosia artemisiifolia”
Claim · model-written summary
Origin-site climate and soil contributed to fungal community composition variation.
- Taxon
- Ambrosia artemisiifoliaAmbrosia artemisiifoliat0
- Outcome
- phyllosphere fungal community compositione0
- Qualifier
- climatic and soil conditionse0
- Setting
- sites of origine0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“climatic and soil conditions at the sites of origin also contributed to between-population variation in leaf chemistry and phyllosphere fungal community composition”
t0“Ambrosia artemisiifolia”