Preadapted to adapt: underpinnings of adaptive plasticity revealed by the downy brome genome

Samuel R. Revolinski; Peter J. Maughan; Craig E. Coleman; Ian C. Burke

doi:10.1038/s42003-023-04620-9

Preadapted to adapt: underpinnings of adaptive plasticity revealed by the downy brome genome

Samuel R. Revolinski, Peter J. Maughan, Craig E. Coleman, Ian C. Burke

Plant and Soil Sciences

Research output: Contribution to journal › Article › peer-review

1 Scopus citations

Abstract

Bromus tectorum L. is arguably the most successful invasive weed in the world. It has fundamentally altered arid ecosystems of the western United States, where it now found on an excess of 20 million hectares. Invasion success is related to avoidance of abiotic stress and human management. Early flowering is a heritable trait utilized by B. tectorum, enabling the species to temporally monopolize limited resources and outcompete the native plant community. Thus, understanding the genetic underpinning of flowering time is critical for the design of integrated management strategies. To study flowering time traits in B. tectorum, we assembled a chromosome scale reference genome for B. tectorum. To assess the utility of the assembled genome, 121 diverse B. tectorum accessions are phenotyped and subjected to a genome wide association study (GWAS). Candidate genes, representing homologs of genes that have been previously associated with plant height or flowering phenology traits in related species are located near QTLs we identified. This study uses a high-resolution GWAS to identify reproductive phenology genes in a weedy species and represents a considerable step forward in understanding the mechanisms underlying genetic plasticity in one of the most successful invasive weed species.

Original language	English
Article number	326
Journal	Communications Biology
Volume	6
Issue number	1
DOIs	https://doi.org/10.1038/s42003-023-04620-9
State	Published - Dec 2023

Bibliographical note

Funding Information:
We would like to acknowledge Amber Hauvermale for providing sequence data on B. tectorum that was used to conceive the experiment but was not included in analyses present in the manuscript. We would also like acknowledge Lisa Rew for providing seed for the B. tectorum genotypes from Montana. This work was funded in part by the Washington Grain Commission and by U.S. Department of Agriculture National Institute of Food and Agriculture grant No. 2017-68002-26819, the Washington Grain Commission R. J. Cook Chair Endowment, and the USDA National Institute of Food and Agriculture, Hatch project 1017286.

Funding Information:
We would like to acknowledge Amber Hauvermale for providing sequence data on B. tectorum that was used to conceive the experiment but was not included in analyses present in the manuscript. We would also like acknowledge Lisa Rew for providing seed for the B. tectorum genotypes from Montana. This work was funded in part by the Washington Grain Commission and by U.S. Department of Agriculture National Institute of Food and Agriculture grant No. 2017-68002-26819, the Washington Grain Commission R. J. Cook Chair Endowment, and the USDA National Institute of Food and Agriculture, Hatch project 1017286.

Publisher Copyright:
© 2023, The Author(s).

ASJC Scopus subject areas

Medicine (miscellaneous)
Biochemistry, Genetics and Molecular Biology (all)
Agricultural and Biological Sciences (all)

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10.1038/s42003-023-04620-9

Cite this

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title = "Preadapted to adapt: underpinnings of adaptive plasticity revealed by the downy brome genome",

abstract = "Bromus tectorum L. is arguably the most successful invasive weed in the world. It has fundamentally altered arid ecosystems of the western United States, where it now found on an excess of 20 million hectares. Invasion success is related to avoidance of abiotic stress and human management. Early flowering is a heritable trait utilized by B. tectorum, enabling the species to temporally monopolize limited resources and outcompete the native plant community. Thus, understanding the genetic underpinning of flowering time is critical for the design of integrated management strategies. To study flowering time traits in B. tectorum, we assembled a chromosome scale reference genome for B. tectorum. To assess the utility of the assembled genome, 121 diverse B. tectorum accessions are phenotyped and subjected to a genome wide association study (GWAS). Candidate genes, representing homologs of genes that have been previously associated with plant height or flowering phenology traits in related species are located near QTLs we identified. This study uses a high-resolution GWAS to identify reproductive phenology genes in a weedy species and represents a considerable step forward in understanding the mechanisms underlying genetic plasticity in one of the most successful invasive weed species.",

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note = "Funding Information: We would like to acknowledge Amber Hauvermale for providing sequence data on B. tectorum that was used to conceive the experiment but was not included in analyses present in the manuscript. We would also like acknowledge Lisa Rew for providing seed for the B. tectorum genotypes from Montana. This work was funded in part by the Washington Grain Commission and by U.S. Department of Agriculture National Institute of Food and Agriculture grant No. 2017-68002-26819, the Washington Grain Commission R. J. Cook Chair Endowment, and the USDA National Institute of Food and Agriculture, Hatch project 1017286. Funding Information: We would like to acknowledge Amber Hauvermale for providing sequence data on B. tectorum that was used to conceive the experiment but was not included in analyses present in the manuscript. We would also like acknowledge Lisa Rew for providing seed for the B. tectorum genotypes from Montana. This work was funded in part by the Washington Grain Commission and by U.S. Department of Agriculture National Institute of Food and Agriculture grant No. 2017-68002-26819, the Washington Grain Commission R. J. Cook Chair Endowment, and the USDA National Institute of Food and Agriculture, Hatch project 1017286. Publisher Copyright: {\textcopyright} 2023, The Author(s).",

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N2 - Bromus tectorum L. is arguably the most successful invasive weed in the world. It has fundamentally altered arid ecosystems of the western United States, where it now found on an excess of 20 million hectares. Invasion success is related to avoidance of abiotic stress and human management. Early flowering is a heritable trait utilized by B. tectorum, enabling the species to temporally monopolize limited resources and outcompete the native plant community. Thus, understanding the genetic underpinning of flowering time is critical for the design of integrated management strategies. To study flowering time traits in B. tectorum, we assembled a chromosome scale reference genome for B. tectorum. To assess the utility of the assembled genome, 121 diverse B. tectorum accessions are phenotyped and subjected to a genome wide association study (GWAS). Candidate genes, representing homologs of genes that have been previously associated with plant height or flowering phenology traits in related species are located near QTLs we identified. This study uses a high-resolution GWAS to identify reproductive phenology genes in a weedy species and represents a considerable step forward in understanding the mechanisms underlying genetic plasticity in one of the most successful invasive weed species.

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Preadapted to adapt: underpinnings of adaptive plasticity revealed by the downy brome genome

Abstract

Bibliographical note

ASJC Scopus subject areas

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