Document Type

Journal Article

Publication Title

New Phytologist

ISSN

1469-8137

Volume

224

Issue

3

First Page

1035

Last Page

1047

PubMed ID

31505037

Publisher

Wiley

School

School of Science

RAS ID

29998

Funders

MP was supported by funding from the European Union’s Seventh Framework Programme (FP7/2007-2013) under grant agreement number 329960, CF an Austrian Science Foundation FWF grant (Project M 2463-B29), SY an NSERC Banting Fellowship and YB an NSF DEB grant number 1754246.

Comments

Originally published as: Pickup, M., Brandvain, Y., Fraïsse, C., Yakimowski, S., Barton, N. H., Dixit, T., ... & Field, D. L. (2019). Mating system variation in hybrid zones: Facilitation, barriers and asymmetries to gene flow. New Phytologist, 224(3), 1035-1047.

Original article available here.

Abstract

Plant mating systems play a key role in structuring genetic variation both within and between species. In hybrid zones, the outcomes and dynamics of hybridization are usually interpreted as the balance between gene flow and selection against hybrids. Yet, mating systems can introduce selective forces that alter these expectations; with diverse outcomes for the level and direction of gene flow depending on variation in outcrossing and whether the mating systems of the species pair are the same or divergent. We present a survey of hybridization in 133 species pairs from 41 plant families and examine how patterns of hybridization vary with mating system. We examine if hybrid zone mode, level of gene flow, asymmetries in gene flow and the frequency of reproductive isolating barriers vary in relation to mating system/s of the species pair. We combine these results with a simulation model and examples from the literature to address two general themes: (1) the two-way interaction between introgression and the evolution of reproductive systems, and (2) how mating system can facilitate or restrict interspecific gene flow. We conclude that examining mating system with hybridization provides unique opportunities to understand divergence and the processes underlying reproductive isolation.

DOI

10.1111/nph.16180

Access Rights

free_to_read

Creative Commons License

Creative Commons Attribution 4.0 License
This work is licensed under a Creative Commons Attribution 4.0 License.

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