uu.seUppsala University Publications
Change search
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf
Selection on flowering time and floral display in an alpine and a lowland population of Arabidopsis lyrata
Uppsala University, Disciplinary Domain of Science and Technology, Biology, Department of Ecology and Evolution, Ecological Botany.
Uppsala University, Disciplinary Domain of Science and Technology, Biology, Department of Ecology and Evolution, Ecological Botany.
Uppsala University, Disciplinary Domain of Science and Technology, Biology, Department of Ecology and Evolution, Ecological Botany.
2007 (English)In: Journal of Evolutionary Biology, ISSN 1010-061X, E-ISSN 1420-9101, Vol. 20, no 2, 558-567 p.Article in journal (Refereed) Published
Abstract [en]

To determine whether population differentiation in flowering time is consistent with differences in current selection, we quantified phenotypic selection acting through female reproductive success on flowering phenology and floral display in two Scandinavian populations of the outcrossing, perennial herb Arabidopsis lyrata in two years. One population was located in an alpine environment strongly affected by grazing, whereas the other was close to sea level and only moderately affected by herbivory. Multiple regression models indicated directional selection for early end of flowering in one year in the lowland population, and directional selection for early start of flowering in one year in the alpine population. As expected, there was selection for more inflorescences in the lowland population. However, in the alpine population, plants with many inflorescences were selectively grazed and the number of inflorescences produced was negatively related to female fitness in one year and not significantly related to female fitness in the second year. The results are consistent with the hypothesis that genetic differentiation in flowering phenology between the study populations is adaptive, and indicate that interactions with selective grazers may strongly influence selection on floral display in A. lyrata.

Place, publisher, year, edition, pages
2007. Vol. 20, no 2, 558-567 p.
Keyword [en]
Arabidopsis lyrata, floral display, flowering time, herbivory, phenology, plant–animal interaction, selection analysis
National Category
Biological Sciences
Identifiers
URN: urn:nbn:se:uu:diva-95496DOI: 10.1111/j.1420-9101.2006.01260.xISI: 000244244300015OAI: oai:DiVA.org:uu-95496DiVA: diva2:169735
Available from: 2007-03-12 Created: 2007-03-12 Last updated: 2017-12-14Bibliographically approved
In thesis
1. Plant-Animal Interactions and Evolution of Floral Display and Flowering Phenology in Arabidopsis lyrata
Open this publication in new window or tab >>Plant-Animal Interactions and Evolution of Floral Display and Flowering Phenology in Arabidopsis lyrata
2007 (English)Doctoral thesis, comprehensive summary (Other academic)
Alternative title[sv]
Samspelet mellan växter och djur och evolution av blommor och blomningstid hos strandtrav
Abstract [en]

In this thesis, I combined comparative and experimental approaches to examine selection on reproductive traits, and population differentiation in the insect-pollinated, outcrossing, perennial herb Arabidopsis lyrata. More specifically, I (1) determined whether selection on flowering phenology and floral display can be attributed to interactions with pollinators and herbivores, (2) examined whether population differentiation in flowering phenology and floral display is correlated with current selection on these traits, and (3) tested for local adaptation from contrasting environments in Europe.

A field experiment conducted in a Swedish population demonstrated, that interactions with pollinators may markedly affect selection on both floral display and phenology of flowering. In an alpine population in Norway, grazing damage to inflorescences strongly influenced selection on floral display. The results suggest that variation in the abundance of pollinators and herbivores should contribute to spatio-temporal variation in selection on flowering phenology and floral display in A. lyrata.

A common-garden experiment showed that flowering phenology and floral display vary among Scandinavian populations of A. lyrata. For some traits patterns of population differentiation were consistent with differences in the direction and strength of phenotypic selection determined in comparisons (a) between an alpine population in Norway and a coastal population in Sweden, and (b) among coastal populations in Sweden. This suggests that current selection contributes to the maintenance of genetic differentiation in these traits.

Adaptive differentiation among populations was examined in a reciprocal transplant experiment that included populations from three contrasting environments, alpine Norway, coastal Sweden and lowland, continental Germany. The experiment provided evidence for local adaptation, and indicated that populations have diverged in traits affecting plant establishment and early growth.

Place, publisher, year, edition, pages
Uppsala: Acta Universitatis Upsaliensis, 2007. 38 p.
Series
Digital Comprehensive Summaries of Uppsala Dissertations from the Faculty of Science and Technology, ISSN 1651-6214 ; 274
Keyword
Ecology, Arabidopsis lyrata, natural selection, floral display, phenology, flowering time, plant-animal interactions, pollination, herbivory, selection gradients, population differentiation, local adaptation, Ekologi
Identifiers
urn:nbn:se:uu:diva-7592 (URN)978-91-554-6808-X (ISBN)
Public defence
2007-03-31, Föreläsningssalen, Avdelningen för växtekologi, Villavägen 14, Uppsala, 10:00
Opponent
Supervisors
Available from: 2007-03-12 Created: 2007-03-12Bibliographically approved

Open Access in DiVA

No full text

Other links

Publisher's full text

Authority records BETA

Sandring, SaskiaSavolainen, OutiÅgren, Jon

Search in DiVA

By author/editor
Sandring, SaskiaSavolainen, OutiÅgren, Jon
By organisation
Ecological Botany
In the same journal
Journal of Evolutionary Biology
Biological Sciences

Search outside of DiVA

GoogleGoogle Scholar

doi
urn-nbn

Altmetric score

doi
urn-nbn
Total: 511 hits
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf