Release from natural enemies mitigates inbreeding depression in native and invasive Silene latifolia populations

Schrieber K, Wolf S, Wypior C, Hoehlig D, Keller SR, Hensen I, Lachmuth S (2019)
ECOLOGY AND EVOLUTION 9(6): 3564-3576.

Zeitschriftenaufsatz | Veröffentlicht | Englisch
 
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Abstract / Bemerkung
Inbreeding and enemy infestation are common in plants and can synergistically reduce their performance. This inbreeding xenvironment (I x E) interaction may be of particular importance for the success of plant invasions if introduced populations experience a release from attack by natural enemies relative to their native conspecifics. Here, we investigate whether inbreeding affects plant infestation damage, whether inbreeding depression in growth and reproduction is mitigated by enemy release, and whether this effect is more pronounced in invasive than native plant populations. We used the invader Silene latifolia and its natural enemies as a study system. We performed two generations of experimental out- and inbreeding within eight native (European) and eight invasive (North American) populations under controlled conditions using field-collected seeds. Subsequently, we exposed the offspring to an enemy exclusion and inclusion treatment in a common garden in the species' native range to assess the interactive effects of population origin (range), breeding treatment, and enemy treatment on infestation damage, growth, and reproduction. Inbreeding increased flower and leaf infestation damage in plants from both ranges, but had opposing effects on fruit damage in native versus invasive plants. Inbreeding significantly reduced plant fitness; whereby, inbreeding depression in fruit number was higher in enemy inclusions than exclusions. This effect was equally pronounced in populations from both distribution ranges. Moreover, the magnitude of inbreeding depression in fruit number was lower in invasive than native populations. These results support that inbreeding has the potential to reduce plant defenses in S. latifolia, which magnifies inbreeding depression in the presence of enemies. However, future studies are necessary to further explore whether enemy release in the invaded habitat has actually decreased inbreeding depression and thus facilitated the persistence of inbred founder populations and invasion success.
Stichworte
biological invasion; plant defense; evolution; genetic paradox; herbivory; inbreeding; purging; Silene latifolia
Erscheinungsjahr
2019
Zeitschriftentitel
ECOLOGY AND EVOLUTION
Band
9
Ausgabe
6
Seite(n)
3564-3576
ISSN
2045-7758
Page URI
https://pub.uni-bielefeld.de/record/2935007

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Schrieber K, Wolf S, Wypior C, et al. Release from natural enemies mitigates inbreeding depression in native and invasive Silene latifolia populations. ECOLOGY AND EVOLUTION. 2019;9(6):3564-3576.
Schrieber, K., Wolf, S., Wypior, C., Hoehlig, D., Keller, S. R., Hensen, I., & Lachmuth, S. (2019). Release from natural enemies mitigates inbreeding depression in native and invasive Silene latifolia populations. ECOLOGY AND EVOLUTION, 9(6), 3564-3576. doi:10.1002/ece3.4990
Schrieber, K., Wolf, S., Wypior, C., Hoehlig, D., Keller, S. R., Hensen, I., and Lachmuth, S. (2019). Release from natural enemies mitigates inbreeding depression in native and invasive Silene latifolia populations. ECOLOGY AND EVOLUTION 9, 3564-3576.
Schrieber, K., et al., 2019. Release from natural enemies mitigates inbreeding depression in native and invasive Silene latifolia populations. ECOLOGY AND EVOLUTION, 9(6), p 3564-3576.
K. Schrieber, et al., “Release from natural enemies mitigates inbreeding depression in native and invasive Silene latifolia populations”, ECOLOGY AND EVOLUTION, vol. 9, 2019, pp. 3564-3576.
Schrieber, K., Wolf, S., Wypior, C., Hoehlig, D., Keller, S.R., Hensen, I., Lachmuth, S.: Release from natural enemies mitigates inbreeding depression in native and invasive Silene latifolia populations. ECOLOGY AND EVOLUTION. 9, 3564-3576 (2019).
Schrieber, Karin, Wolf, Sabrina, Wypior, Catherina, Hoehlig, Diana, Keller, Stephen R., Hensen, Isabell, and Lachmuth, Susanne. “Release from natural enemies mitigates inbreeding depression in native and invasive Silene latifolia populations”. ECOLOGY AND EVOLUTION 9.6 (2019): 3564-3576.

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