Integration of attractive and defensive phytochemicals is unlikely to constrain chemical diversification in a perennial herb
(2024) In New Phytologist 244(1). p.249-264- Abstract
Diversification of plant chemical phenotypes is typically associated with spatially and temporally variable plant–insect interactions. Floral scent is often assumed to be the target of pollinator-mediated selection, whereas foliar compounds are considered targets of antagonist-mediated selection. However, floral and vegetative phytochemicals can be biosynthetically linked and may thus evolve as integrated phenotypes.
Utilizing a common garden of 28 populations of the perennial herb Arabis alpina (Brassicaceae), we investigated integration within and among floral scent compounds and foliar defense compounds (both volatile compounds and tissue-bound glucosinolates).
Within floral scent volatiles, foliar volatile... (More)
Diversification of plant chemical phenotypes is typically associated with spatially and temporally variable plant–insect interactions. Floral scent is often assumed to be the target of pollinator-mediated selection, whereas foliar compounds are considered targets of antagonist-mediated selection. However, floral and vegetative phytochemicals can be biosynthetically linked and may thus evolve as integrated phenotypes.
Utilizing a common garden of 28 populations of the perennial herb Arabis alpina (Brassicaceae), we investigated integration within and among floral scent compounds and foliar defense compounds (both volatile compounds and tissue-bound glucosinolates).
Within floral scent volatiles, foliar volatile compounds, and glucosinolates, phytochemicals were often positively correlated, and correlations were stronger within these groups than between them. Thus, we found no evidence of integration between compound groups indicating that these are free to evolve independently. Relative to self-compatible populations, self-incompatible populations experienced stronger correlations between floral scent compounds, and a trend toward lower integration between floral scent and foliar volatiles.
Our study serves as a rare test of integration of multiple, physiologically related plant traits that each are potential targets of insect-mediated selection. Our results suggest that independent evolutionary forces are likely to diversify different axes of plant chemistry without major constraints.
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https://lup.lub.lu.se/record/37d132c9-20e3-436f-90ce-3f150940f968
- author
- Eriksdotter Thosteman, Hanna LU ; Eisen, Katherine LU ; Petrén, Hampus LU ; Boutsi, Sotiria ; Pace, Loretta ; Halley, John M. ; De Moraes, Consuelo M. ; Mescher, Mark C. ; Buckley, James and Friberg, Magne LU
- organization
- publishing date
- 2024-07-30
- type
- Contribution to journal
- publication status
- published
- subject
- in
- New Phytologist
- volume
- 244
- issue
- 1
- pages
- 16 pages
- publisher
- Wiley-Blackwell
- external identifiers
-
- pmid:39081013
- scopus:85200036114
- ISSN
- 1469-8137
- DOI
- 10.1111/nph.20006
- language
- English
- LU publication?
- yes
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- 37d132c9-20e3-436f-90ce-3f150940f968
- date added to LUP
- 2024-10-25 11:17:11
- date last changed
- 2025-04-04 15:24:37
@article{37d132c9-20e3-436f-90ce-3f150940f968,
abstract = {{<br/> Diversification of plant chemical phenotypes is typically associated with spatially and temporally variable plant–insect interactions. Floral scent is often assumed to be the target of pollinator-mediated selection, whereas foliar compounds are considered targets of antagonist-mediated selection. However, floral and vegetative phytochemicals can be biosynthetically linked and may thus evolve as integrated phenotypes.<br/> Utilizing a common garden of 28 populations of the perennial herb Arabis alpina (Brassicaceae), we investigated integration within and among floral scent compounds and foliar defense compounds (both volatile compounds and tissue-bound glucosinolates).<br/> Within floral scent volatiles, foliar volatile compounds, and glucosinolates, phytochemicals were often positively correlated, and correlations were stronger within these groups than between them. Thus, we found no evidence of integration between compound groups indicating that these are free to evolve independently. Relative to self-compatible populations, self-incompatible populations experienced stronger correlations between floral scent compounds, and a trend toward lower integration between floral scent and foliar volatiles.<br/> Our study serves as a rare test of integration of multiple, physiologically related plant traits that each are potential targets of insect-mediated selection. Our results suggest that independent evolutionary forces are likely to diversify different axes of plant chemistry without major constraints.<br/>}},
author = {{Eriksdotter Thosteman, Hanna and Eisen, Katherine and Petrén, Hampus and Boutsi, Sotiria and Pace, Loretta and Halley, John M. and De Moraes, Consuelo M. and Mescher, Mark C. and Buckley, James and Friberg, Magne}},
issn = {{1469-8137}},
language = {{eng}},
month = {{07}},
number = {{1}},
pages = {{249--264}},
publisher = {{Wiley-Blackwell}},
series = {{New Phytologist}},
title = {{Integration of attractive and defensive phytochemicals is unlikely to constrain chemical diversification in a perennial herb}},
url = {{http://dx.doi.org/10.1111/nph.20006}},
doi = {{10.1111/nph.20006}},
volume = {{244}},
year = {{2024}},
}