The demography and population genomics of evolutionary transitions to self-fertilization in plants

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The demography and population genomics of evolutionary transitions to self-fertilization in plants. / Barrett, Spencer C.H.; Ramesh, Arunkumar; Wright, Stephen I.

In: Philosophical transactions of the Royal Society of London. Series B, Biological sciences, Vol. 369, No. 1648, 05.08.2014, p. 1-9.

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@article{5fec4cfa8c02424191a85ad2f5fb6db0,
title = "The demography and population genomics of evolutionary transitions to self-fertilization in plants",
abstract = "The evolution of self-fertilization from outcrossing has occurred on numerous occasions in flowering plants. This shift in mating system profoundly influences the morphology, ecology, genetics and evolution of selfing lineages. As a result, there has been sustained interest in understanding the mechanisms driving the evolution of selfing and its environmental context. Recently, patterns of molecular variation have been used to make inferences about the selective mechanisms associated with mating system transitions. However, these inferences can be complicated by the action of linked selection following the transition. Here, using multilocus simulations and comparative molecular data from related selfers and outcrossers, we demonstrate that there is little evidence for strong bottlenecks associated with initial transitions to selfing, and our simulation results cast doubt on whether it is possible to infer the role of bottlenecks associated with reproductive assurance in the evolution of selfing. They indicate that the effects of background selection on the loss of diversity and efficacy of selection occur rapidly following the shift to high selfing. Future comparative studies that integrate explicit ecological and genomic details are necessary for quantifying the independent and joint effects of selection and demography on transitions to selfing and the loss of genetic diversity.",
keywords = "demography, genetic bottlenecks, background selection, plant mating, reproductive assurance, self-fertilization",
author = "Barrett, {Spencer C.H.} and Arunkumar Ramesh and Wright, {Stephen I.}",
year = "2014",
month = aug,
day = "5",
doi = "10.1098/rstb.2013.0344",
language = "English",
volume = "369",
pages = "1--9",
journal = "Royal Society of London. Proceedings B. Biological Sciences",
issn = "0962-8452",
publisher = "The Royal Society",
number = "1648",

}

RIS

TY - JOUR

T1 - The demography and population genomics of evolutionary transitions to self-fertilization in plants

AU - Barrett, Spencer C.H.

AU - Ramesh, Arunkumar

AU - Wright, Stephen I.

PY - 2014/8/5

Y1 - 2014/8/5

N2 - The evolution of self-fertilization from outcrossing has occurred on numerous occasions in flowering plants. This shift in mating system profoundly influences the morphology, ecology, genetics and evolution of selfing lineages. As a result, there has been sustained interest in understanding the mechanisms driving the evolution of selfing and its environmental context. Recently, patterns of molecular variation have been used to make inferences about the selective mechanisms associated with mating system transitions. However, these inferences can be complicated by the action of linked selection following the transition. Here, using multilocus simulations and comparative molecular data from related selfers and outcrossers, we demonstrate that there is little evidence for strong bottlenecks associated with initial transitions to selfing, and our simulation results cast doubt on whether it is possible to infer the role of bottlenecks associated with reproductive assurance in the evolution of selfing. They indicate that the effects of background selection on the loss of diversity and efficacy of selection occur rapidly following the shift to high selfing. Future comparative studies that integrate explicit ecological and genomic details are necessary for quantifying the independent and joint effects of selection and demography on transitions to selfing and the loss of genetic diversity.

AB - The evolution of self-fertilization from outcrossing has occurred on numerous occasions in flowering plants. This shift in mating system profoundly influences the morphology, ecology, genetics and evolution of selfing lineages. As a result, there has been sustained interest in understanding the mechanisms driving the evolution of selfing and its environmental context. Recently, patterns of molecular variation have been used to make inferences about the selective mechanisms associated with mating system transitions. However, these inferences can be complicated by the action of linked selection following the transition. Here, using multilocus simulations and comparative molecular data from related selfers and outcrossers, we demonstrate that there is little evidence for strong bottlenecks associated with initial transitions to selfing, and our simulation results cast doubt on whether it is possible to infer the role of bottlenecks associated with reproductive assurance in the evolution of selfing. They indicate that the effects of background selection on the loss of diversity and efficacy of selection occur rapidly following the shift to high selfing. Future comparative studies that integrate explicit ecological and genomic details are necessary for quantifying the independent and joint effects of selection and demography on transitions to selfing and the loss of genetic diversity.

KW - demography

KW - genetic bottlenecks

KW - background selection

KW - plant mating

KW - reproductive assurance

KW - self-fertilization

UR - https://europepmc.org/articles/PMC4071518

U2 - 10.1098/rstb.2013.0344

DO - 10.1098/rstb.2013.0344

M3 - Review article

C2 - 24958918

VL - 369

SP - 1

EP - 9

JO - Royal Society of London. Proceedings B. Biological Sciences

JF - Royal Society of London. Proceedings B. Biological Sciences

SN - 0962-8452

IS - 1648

ER -