Evolution of strong reproductive isolation in plants: Broad-scale patterns and lessons from a perennial model group

H. Shang, J. Hess, M. Pickup, D. Field, P.K. Ingvarsson, J. Liu, C. Lexer, Philosophical Transactions of the Royal Society. Series B: Biological Sciences 375 (2020).


Journal Article | Published | English

Scopus indexed
Author
Shang, Huiying; Hess, Jaqueline; Pickup, MelindaIST Austria ; Field, DavidIST Austria ; Ingvarsson, Pär K.; Liu, Jianquan; Lexer, Christian
Department
Abstract
Many recent studies have addressed the mechanisms operating during the early stages of speciation, but surprisingly few studies have tested theoretical predictions on the evolution of strong reproductive isolation (RI). To help address this gap, we first undertook a quantitative review of the hybrid zone literature for flowering plants in relation to reproductive barriers. Then, using Populus as an exemplary model group, we analysed genome-wide variation for phylogenetic tree topologies in both early- and late-stage speciation taxa to determine how these patterns may be related to the genomic architecture of RI. Our plant literature survey revealed variation in barrier complexity and an association between barrier number and introgressive gene flow. Focusing on Populus, our genome-wide analysis of tree topologies in speciating poplar taxa points to unusually complex genomic architectures of RI, consistent with earlier genome-wide association studies. These architectures appear to facilitate the ‘escape’ of introgressed genome segments from polygenic barriers even with strong RI, thus affecting their relationships with recombination rates. Placed within the context of the broader literature, our data illustrate how phylogenomic approaches hold great promise for addressing the evolution and temporary breakdown of RI during late stages of speciation.
Publishing Year
Date Published
2020-07-12
Journal Title
Philosophical Transactions of the Royal Society. Series B: Biological Sciences
Acknowledgement
This work was supported by a fellowship from the China Scholarship Council (CSC) to H.S., Swiss National Science Foundation (SNF) grant no. 31003A_149306 to C.L., doctoral programme grant W1225-B20 to a faculty team including C.L., and the University of Vienna. We thank members of J.L.’s lab for collecting samples, Michael Barfuss and Elfi Grasserbauer for help in the laboratory, the Next Generation Sequencing Platform of the University of Berne for sequencing, the Vienna Scientific Cluster (VSC) for access to computational resources, and Claus Vogel and members of the PopGen Vienna graduate school for helpful discussions.
Volume
375
Issue
1806
Article Number
20190544
eISSN
IST-REx-ID

Cite this

Shang H, Hess J, Pickup M, et al. Evolution of strong reproductive isolation in plants: Broad-scale patterns and lessons from a perennial model group. Philosophical Transactions of the Royal Society Series B: Biological Sciences. 2020;375(1806). doi:10.1098/rstb.2019.0544
Shang, H., Hess, J., Pickup, M., Field, D., Ingvarsson, P. K., Liu, J., & Lexer, C. (2020). Evolution of strong reproductive isolation in plants: Broad-scale patterns and lessons from a perennial model group. Philosophical Transactions of the Royal Society. Series B: Biological Sciences, 375(1806). https://doi.org/10.1098/rstb.2019.0544
Shang, Huiying, Jaqueline Hess, Melinda Pickup, David Field, Pär K. Ingvarsson, Jianquan Liu, and Christian Lexer. “Evolution of Strong Reproductive Isolation in Plants: Broad-Scale Patterns and Lessons from a Perennial Model Group.” Philosophical Transactions of the Royal Society. Series B: Biological Sciences 375, no. 1806 (2020). https://doi.org/10.1098/rstb.2019.0544.
H. Shang et al., “Evolution of strong reproductive isolation in plants: Broad-scale patterns and lessons from a perennial model group,” Philosophical Transactions of the Royal Society. Series B: Biological Sciences, vol. 375, no. 1806, 2020.
Shang H, Hess J, Pickup M, Field D, Ingvarsson PK, Liu J, Lexer C. 2020. Evolution of strong reproductive isolation in plants: Broad-scale patterns and lessons from a perennial model group. Philosophical Transactions of the Royal Society. Series B: Biological Sciences. 375(1806).
Shang, Huiying, et al. “Evolution of Strong Reproductive Isolation in Plants: Broad-Scale Patterns and Lessons from a Perennial Model Group.” Philosophical Transactions of the Royal Society. Series B: Biological Sciences, vol. 375, no. 1806, 20190544, The Royal Society, 2020, doi:10.1098/rstb.2019.0544.
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