Changes to gene expression assocaitted with hybrid speciation in plants: further insights from transcriptomic studies in Senecio

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Changes to gene expression assocaitted with hybrid speciation in plants: further insights from transcriptomic studies in Senecio. / Hegarty, Matthew John; Barker, Gary L.; Brennan, Adrian C.; Edwards, Keith J.; Abbott, Richard J.; Hiscock, Simon J.

In: Philosophical Transactions B: Biological Sciences, Vol. 363, No. 1506, 09.2008, p. 3055-3069.

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Harvard

Hegarty, MJ, Barker, GL, Brennan, AC, Edwards, KJ, Abbott, RJ & Hiscock, SJ 2008, 'Changes to gene expression assocaitted with hybrid speciation in plants: further insights from transcriptomic studies in Senecio', Philosophical Transactions B: Biological Sciences, vol. 363, no. 1506, pp. 3055-3069. https://doi.org/10.1098/rstb.2008.0080

APA

Hegarty, M. J., Barker, G. L., Brennan, A. C., Edwards, K. J., Abbott, R. J., & Hiscock, S. J. (2008). Changes to gene expression assocaitted with hybrid speciation in plants: further insights from transcriptomic studies in Senecio. Philosophical Transactions B: Biological Sciences, 363(1506), 3055-3069. https://doi.org/10.1098/rstb.2008.0080

Vancouver

Hegarty MJ, Barker GL, Brennan AC, Edwards KJ, Abbott RJ, Hiscock SJ. Changes to gene expression assocaitted with hybrid speciation in plants: further insights from transcriptomic studies in Senecio. Philosophical Transactions B: Biological Sciences. 2008 Sep;363(1506):3055-3069. https://doi.org/10.1098/rstb.2008.0080

Author

Hegarty, Matthew John ; Barker, Gary L. ; Brennan, Adrian C. ; Edwards, Keith J. ; Abbott, Richard J. ; Hiscock, Simon J. / Changes to gene expression assocaitted with hybrid speciation in plants: further insights from transcriptomic studies in Senecio. In: Philosophical Transactions B: Biological Sciences. 2008 ; Vol. 363, No. 1506. pp. 3055-3069.

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@article{0a30a32845594da38b5744760b4c4792,
title = "Changes to gene expression assocaitted with hybrid speciation in plants: further insights from transcriptomic studies in Senecio",
abstract = "Interspecific hybridization is an important mechanism of speciation in higher plants. In flowering plants, hybrid speciation is usually associated with polyploidy (allopolyploidy), but hybrid speciation without genome duplication (homoploid hybrid speciation) is also possible, although it is more difficult to detect. The combination of divergent genomes within a hybrid can result in profound changes to both genome and transcriptome. Recent transcriptomic studies of wild and resynthesized homoploid and allopolyploid hybrids have revealed widespread changes to gene expression in hybrids relative to expression levels in their parents. Many of these changes to gene expression are {\textquoteleft}non-additive{\textquoteright}, i.e. not simply the sum of the combined expression levels of parental genes. Some gene expression changes are far outside the range of gene expression in either parent, and can therefore be viewed as {\textquoteleft}transgressive{\textquoteright}. Such profound changes to gene expression may enable new hybrids to survive in novel habitats not accessible to their parent species. Here, we give a brief overview of hybrid speciation in plants, with an emphasis on genomic change, before focusing discussion on findings from recent transcriptomic studies. We then discuss our current work on gene expression change associated with hybrid speciation in the genus Senecio (ragworts and groundsels) focusing on the findings from a reanalysis of gene expression data obtained from recent microarray studies of wild and resynthesized allopolyploid Senecio cambrensis. These data, showing extensive non-additive and transgressive gene expression changes in Senecio hybrids, are discussed in the light of findings from other model systems, and in the context of the potential importance of gene expression change to hybrid speciation in plants.",
keywords = "hybrid speciation, homoploid, allopolyploid, genome, transcriptome, gene expression",
author = "Hegarty, {Matthew John} and Barker, {Gary L.} and Brennan, {Adrian C.} and Edwards, {Keith J.} and Abbott, {Richard J.} and Hiscock, {Simon J.}",
year = "2008",
month = sep,
doi = "10.1098/rstb.2008.0080",
language = "English",
volume = "363",
pages = "3055--3069",
journal = "Philosophical Transactions B: Biological Sciences",
issn = "0800-4622",
publisher = "Royal Society",
number = "1506",

}

RIS (suitable for import to EndNote) - Download

TY - JOUR

T1 - Changes to gene expression assocaitted with hybrid speciation in plants: further insights from transcriptomic studies in Senecio

AU - Hegarty, Matthew John

AU - Barker, Gary L.

AU - Brennan, Adrian C.

AU - Edwards, Keith J.

AU - Abbott, Richard J.

AU - Hiscock, Simon J.

PY - 2008/9

Y1 - 2008/9

N2 - Interspecific hybridization is an important mechanism of speciation in higher plants. In flowering plants, hybrid speciation is usually associated with polyploidy (allopolyploidy), but hybrid speciation without genome duplication (homoploid hybrid speciation) is also possible, although it is more difficult to detect. The combination of divergent genomes within a hybrid can result in profound changes to both genome and transcriptome. Recent transcriptomic studies of wild and resynthesized homoploid and allopolyploid hybrids have revealed widespread changes to gene expression in hybrids relative to expression levels in their parents. Many of these changes to gene expression are ‘non-additive’, i.e. not simply the sum of the combined expression levels of parental genes. Some gene expression changes are far outside the range of gene expression in either parent, and can therefore be viewed as ‘transgressive’. Such profound changes to gene expression may enable new hybrids to survive in novel habitats not accessible to their parent species. Here, we give a brief overview of hybrid speciation in plants, with an emphasis on genomic change, before focusing discussion on findings from recent transcriptomic studies. We then discuss our current work on gene expression change associated with hybrid speciation in the genus Senecio (ragworts and groundsels) focusing on the findings from a reanalysis of gene expression data obtained from recent microarray studies of wild and resynthesized allopolyploid Senecio cambrensis. These data, showing extensive non-additive and transgressive gene expression changes in Senecio hybrids, are discussed in the light of findings from other model systems, and in the context of the potential importance of gene expression change to hybrid speciation in plants.

AB - Interspecific hybridization is an important mechanism of speciation in higher plants. In flowering plants, hybrid speciation is usually associated with polyploidy (allopolyploidy), but hybrid speciation without genome duplication (homoploid hybrid speciation) is also possible, although it is more difficult to detect. The combination of divergent genomes within a hybrid can result in profound changes to both genome and transcriptome. Recent transcriptomic studies of wild and resynthesized homoploid and allopolyploid hybrids have revealed widespread changes to gene expression in hybrids relative to expression levels in their parents. Many of these changes to gene expression are ‘non-additive’, i.e. not simply the sum of the combined expression levels of parental genes. Some gene expression changes are far outside the range of gene expression in either parent, and can therefore be viewed as ‘transgressive’. Such profound changes to gene expression may enable new hybrids to survive in novel habitats not accessible to their parent species. Here, we give a brief overview of hybrid speciation in plants, with an emphasis on genomic change, before focusing discussion on findings from recent transcriptomic studies. We then discuss our current work on gene expression change associated with hybrid speciation in the genus Senecio (ragworts and groundsels) focusing on the findings from a reanalysis of gene expression data obtained from recent microarray studies of wild and resynthesized allopolyploid Senecio cambrensis. These data, showing extensive non-additive and transgressive gene expression changes in Senecio hybrids, are discussed in the light of findings from other model systems, and in the context of the potential importance of gene expression change to hybrid speciation in plants.

KW - hybrid speciation

KW - homoploid

KW - allopolyploid

KW - genome

KW - transcriptome

KW - gene expression

UR - http://hdl.handle.net/2160/8588

U2 - 10.1098/rstb.2008.0080

DO - 10.1098/rstb.2008.0080

M3 - Article

C2 - 18579474

VL - 363

SP - 3055

EP - 3069

JO - Philosophical Transactions B: Biological Sciences

JF - Philosophical Transactions B: Biological Sciences

SN - 0800-4622

IS - 1506

ER -

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