Deep phylogeographic structure and environmental differentiation in the carnivorous plant Sarracenia alata

Systematic Biology
Amanda J ZellmerBryan C Carstens

Abstract

We collected ~29 kb of sequence data using Roche 454 pyrosequencing in order to estimate the timing and pattern of diversification in the carnivorous pitcher plant Sarracenia alata. Utilizing modified protocols for reduced representation library construction, we generated sequence data from 86 individuals across 10 populations from throughout the range of the species. We identified 76 high-quality and high-coverage loci (containing over 500 SNPs) using the bioinformatics pipeline PRGmatic. Results from a Bayesian clustering analysis indicate that populations are highly structured, and are similar in pattern to the topology of a population tree estimated using *BEAST. The pattern of diversification within Sarracenia alata implies that riverine barriers are the primary factor promoting population diversification, with divergence across the Mississippi River occurring more than 60,000 generations before present. Further, significant patterns of niche divergence and the identification of several outlier loci suggest that selection may contribute to population divergence. Our results demonstrate the feasibility of using next-generation sequencing to investigate intraspecific genetic variation in nonmodel species.

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Citations

Aug 14, 2012·Systematic Biology·Bryan CarstensEmily Moriarty Lemmon
Feb 13, 2016·Molecular Ecology·Adrienne B NicotraJustin O Borevitz
Feb 14, 2015·Molecular Ecology·Ryan C GarrickBryan C Carstens
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Oct 12, 2013·Evolution; International Journal of Organic Evolution·Jason P SextonAry A Hoffmann
Apr 9, 2017·Molecular Ecology·Jordan D Satler, Bryan C Carstens
Apr 25, 2013·Molecular Ecology·Rose L AndrewLoren H Rieseberg
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Mar 2, 2021·Frontiers in Plant Science·Alison G NazarenoLúcia G Lohmann
May 1, 2021·Molecules : a Journal of Synthetic Chemistry and Natural Product Chemistry·Jacek ŁyczkoSebastian Sendel

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