We study the effects of inbreeding in a dioecious plant on its interaction with pollinating insects and test whether the magnitude of such effects is shaped by plant individual sex and the evolutionary histories of plant populations. We recorded spatial, scent, colour and rewarding flower traits as well as pollinator visitation rates in experimentally inbred and outbred, male and female Silene latifolia plants from European and North American populations differing in their evolutionary histories. We found that inbreeding specifically impairs spatial flower traits and floral scent. Our results support that sex-specific selection and gene expression may have partially magnified these inbreeding costs for females, and that divergent evolutionary histories altered the genetic architecture underlying inbreeding effects across population origins. Moreover, the results indicate that inbreeding effects on floral scent may have a huge potential to disrupt interactions among plants and nocturnal moth pollinators, which are mediated by elaborate chemical communication.
All datasets and analyses supporting this article have been deposited to Dryad, under the DOI 10.5061/dryad.612jm643d
Data: Inbreeding in a dioecious plant has sex- and population origin-specific effects on its interactions with pollinatorsDryad Digital Repository, 10.5061/dryad.612jm643d.
- Karin Schrieber
- Alexandra Erfmeier
The funders had no role in study design, data collection and interpretation, or the decision to submit the work for publication.
- Youngsung Joo, Chungbuk National University, Republic of Korea
© 2021, Schrieber et al.
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