||Genetic differentiation within multiple common grassland plants supports seed transfer zones for ecological restoration
; Michalski, S.G.; Berendzen, K.W.; Bossdorf, O.; Bucharova, A.; Hermann, J.-M.; Hölzel, N.; Kollmann, J.
||Journal of Applied Ecology
|Data and Software links
||amplified fragment length polymorphism; ecological restoration; genetic differentiation; genetic diversity; grasslands; isolation by distance; isolation by environment; Knautia arvensis ; local provenancing; polyploidy; seed transfer zone
|UFZ wide themes
restoration of grasslands is increasingly based on regional seeds
derived from predefined seed transfer zones. However, the degree and
spatial pattern of genetic differentiation among provenances of
different seed transfer zones is largely unknown.
- We assessed the genetic differentiation among eight out of 22 German seed transfer zones for seven common grassland species (Arrhenatherum elatius, Centaurea jacea, Daucus carota, Galium album, Hypochaeris radicata, Knautia arvensis and Lychnis flos-cuculi)
using AFLP markers. We analysed genetic population structure with AMOVA
and Bayesian cluster analysis and tested for isolation by distance and
isolation by environment.
- In all of the investigated species,
almost all pairs of provenances were genetically differentiated.
Bayesian cluster analysis revealed species-specific numbers and spatial
patterns of gene pools, with between two (Arrhenatherum) and eight clusters (Lychnis). Most investigated seed transfer zones represented a unique gene pool in the majority of the species.
found isolation by distance in four species, isolation by environment,
driven by climatic seasonality, in three species, and a lack of both in
three species. Thus, the observed genetic differentiation appears to be
caused by both neutral and adaptive processes.
- Synthesis and applications.
Our study shows that grassland plants are indeed strongly genetically
differentiated across Germany supporting the strategy of seed transfer
zones for ecological restoration. Although the predefined seed transfer
zones are unlikely to match the exact genetic structure of many species,
they serve their purpose by capturing a substantial amount of
intraspecific genetic variation across species.
|Persistent UFZ Identifier
|Durka, W., Michalski, S.G., Berendzen, K.W., Bossdorf, O., Bucharova, A., Hermann, J.-M., Hölzel, N., Kollmann, J. (2017):
Genetic differentiation within multiple common grassland plants supports seed transfer zones for ecological restoration
J. Appl. Ecol. 54 (1), 116 - 126