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The genetics of divergence and reproductive isolation between ecotypes of Panicum hallii

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The genetics of divergence and reproductive isolation between ecotypes of Panicum hallii. / Lowry, David B.; Hernandez, Kyle; Taylor, Samuel H. et al.
In: New Phytologist, Vol. 205, No. 1, 01.01.2015, p. 402-414.

Research output: Contribution to Journal/Magazine › Journal article › peer-review

Harvard

Lowry, DB, Hernandez, K, Taylor, SH, Meyer, E, Logan, TL, Barry, KW, Chapman, JA, Rokhsar, DS, Schmutz, J & Juenger, TE 2015, 'The genetics of divergence and reproductive isolation between ecotypes of Panicum hallii', New Phytologist, vol. 205, no. 1, pp. 402-414. https://doi.org/10.1111/nph.13027

APA

Lowry, D. B., Hernandez, K., Taylor, S. H., Meyer, E., Logan, T. L., Barry, K. W., Chapman, J. A., Rokhsar, D. S., Schmutz, J., & Juenger, T. E. (2015). The genetics of divergence and reproductive isolation between ecotypes of Panicum hallii. New Phytologist, 205(1), 402-414. https://doi.org/10.1111/nph.13027

Vancouver

Lowry DB, Hernandez K, Taylor SH, Meyer E, Logan TL, Barry KW et al. The genetics of divergence and reproductive isolation between ecotypes of Panicum hallii. New Phytologist. 2015 Jan 1;205(1):402-414. doi: 10.1111/nph.13027

Author

Lowry, David B. ; Hernandez, Kyle ; Taylor, Samuel H. et al. / The genetics of divergence and reproductive isolation between ecotypes of Panicum hallii. In: New Phytologist. 2015 ; Vol. 205, No. 1. pp. 402-414.

Bibtex

@article{945e2c770034421c83af77062d408860,
title = "The genetics of divergence and reproductive isolation between ecotypes of Panicum hallii",
abstract = "The process of plant speciation often involves the evolution of divergent ecotypes in response to differences in soil water availability between habitats. While the same set of traits is frequently associated with xeric/mesic ecotype divergence, it is unknown whether those traits evolve independently or if they evolve in tandem as a result of genetic colocalization either by pleiotropy or genetic linkage. The self-fertilizing C4 grass species Panicum hallii includes two major ecotypes found in xeric (var. hallii) or mesic (var. filipes) habitats. We constructed the first linkage map for P. hallii by genotyping a reduced representation genomic library of an F2 population derived from an intercross of var. hallii and filipes. We then evaluated the genetic architecture of divergence between these ecotypes through quantitative trait locus (QTL) mapping. Overall, we mapped QTLs for nine morphological traits that are involved in the divergence between the ecotypes. QTLs for five key ecotype-differentiating traits all colocalized to the same region of linkage group five. Leaf physiological traits were less divergent between ecotypes, but we still mapped five physiological QTLs. We also discovered a two-locus Dobzhansky-Muller hybrid incompatibility. Our study suggests that ecotype-differentiating traits may evolve in tandem as a result of genetic colocalization.",
keywords = "Adaptation, Drought, Ecotype, Physiology, Pleiotropy, Quantitative trait locus (QTL), Reproductive isolation",
author = "Lowry, {David B.} and Kyle Hernandez and Taylor, {Samuel H.} and Eli Meyer and Logan, {Tierney L.} and Barry, {Kerrie W.} and Chapman, {Jarrod A.} and Rokhsar, {Daniel S.} and Jeremy Schmutz and Juenger, {Thomas E.}",
year = "2015",
month = jan,
day = "1",
doi = "10.1111/nph.13027",
language = "English",
volume = "205",
pages = "402--414",
journal = "New Phytologist",
issn = "0028-646X",
publisher = "Wiley",
number = "1",

}

RIS

TY - JOUR

T1 - The genetics of divergence and reproductive isolation between ecotypes of Panicum hallii

AU - Lowry, David B.

AU - Hernandez, Kyle

AU - Taylor, Samuel H.

AU - Meyer, Eli

AU - Logan, Tierney L.

AU - Barry, Kerrie W.

AU - Chapman, Jarrod A.

AU - Rokhsar, Daniel S.

AU - Schmutz, Jeremy

AU - Juenger, Thomas E.

PY - 2015/1/1

Y1 - 2015/1/1

N2 - The process of plant speciation often involves the evolution of divergent ecotypes in response to differences in soil water availability between habitats. While the same set of traits is frequently associated with xeric/mesic ecotype divergence, it is unknown whether those traits evolve independently or if they evolve in tandem as a result of genetic colocalization either by pleiotropy or genetic linkage. The self-fertilizing C4 grass species Panicum hallii includes two major ecotypes found in xeric (var. hallii) or mesic (var. filipes) habitats. We constructed the first linkage map for P. hallii by genotyping a reduced representation genomic library of an F2 population derived from an intercross of var. hallii and filipes. We then evaluated the genetic architecture of divergence between these ecotypes through quantitative trait locus (QTL) mapping. Overall, we mapped QTLs for nine morphological traits that are involved in the divergence between the ecotypes. QTLs for five key ecotype-differentiating traits all colocalized to the same region of linkage group five. Leaf physiological traits were less divergent between ecotypes, but we still mapped five physiological QTLs. We also discovered a two-locus Dobzhansky-Muller hybrid incompatibility. Our study suggests that ecotype-differentiating traits may evolve in tandem as a result of genetic colocalization.

AB - The process of plant speciation often involves the evolution of divergent ecotypes in response to differences in soil water availability between habitats. While the same set of traits is frequently associated with xeric/mesic ecotype divergence, it is unknown whether those traits evolve independently or if they evolve in tandem as a result of genetic colocalization either by pleiotropy or genetic linkage. The self-fertilizing C4 grass species Panicum hallii includes two major ecotypes found in xeric (var. hallii) or mesic (var. filipes) habitats. We constructed the first linkage map for P. hallii by genotyping a reduced representation genomic library of an F2 population derived from an intercross of var. hallii and filipes. We then evaluated the genetic architecture of divergence between these ecotypes through quantitative trait locus (QTL) mapping. Overall, we mapped QTLs for nine morphological traits that are involved in the divergence between the ecotypes. QTLs for five key ecotype-differentiating traits all colocalized to the same region of linkage group five. Leaf physiological traits were less divergent between ecotypes, but we still mapped five physiological QTLs. We also discovered a two-locus Dobzhansky-Muller hybrid incompatibility. Our study suggests that ecotype-differentiating traits may evolve in tandem as a result of genetic colocalization.

KW - Adaptation

KW - Drought

KW - Ecotype

KW - Physiology

KW - Pleiotropy

KW - Quantitative trait locus (QTL)

KW - Reproductive isolation

U2 - 10.1111/nph.13027

DO - 10.1111/nph.13027

M3 - Journal article

C2 - 25252269

AN - SCOPUS:84911908821

VL - 205

SP - 402

EP - 414

JO - New Phytologist

JF - New Phytologist

SN - 0028-646X

IS - 1

ER -