Components of Water Use Efficiency Have Unique Genetic Signatures in the Model C 4 Grass Setaria
Abstract
Plant growth and water use are interrelated processes influenced by genetically controlled morphological and biochemical characteristics. Improving plant water use efficiency (WUE) to sustain growth in different environments is an important breeding objective that can improve crop yields and enhance agricultural sustainability. However, genetic improvement of WUE using traditional methods has proven difficult due to the low throughput and environmental heterogeneity of field settings. To overcome these limitations, this study utilizes a high-throughput phenotyping platform to quantify plant size and water use of an interspecific Setaria italica × Setaria viridis recombinant inbred line population at daily intervals in both well-watered and water-limited conditions. Our findings indicate that measurements of plant size and water use are correlated strongly in this system; therefore, a linear modeling approach was used to partition this relationship into predicted values of plant size given water use and deviations from this relationship at the genotype level. The resulting traits describing plant size, water use, and WUE all were heritable and responsive to soil water availability, allowing for a genetic dissection of the components of plant WUE under different watering treatments. Linkage mapping identified major loci underlying two different pleiotropic components of WUE. Lastly, this study indicates thatmore »
- Authors:
-
[1];
[2];
[1];
[1];
[1]
- Donald Danforth Plant Science Center, St. Louis, Missouri 63132
- School of Biological Sciences, Washington State University, Pullman, Washington 99164
- Publication Date:
- Research Org.:
- Donald Danforth Plant Science Center, St. Louis, MO (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC), Biological and Environmental Research (BER)
- OSTI Identifier:
- 1476383
- Alternate Identifier(s):
- OSTI ID: 1530861
- Grant/Contract Number:
- SC0008769; SC0018277
- Resource Type:
- Published Article
- Journal Name:
- Plant Physiology (Bethesda)
- Additional Journal Information:
- Journal Name: Plant Physiology (Bethesda) Journal Volume: 178 Journal Issue: 2; Journal ID: ISSN 0032-0889
- Publisher:
- American Society of Plant Biologists
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 59 BASIC BIOLOGICAL SCIENCES
Citation Formats
Feldman, Max J., Ellsworth, Patrick Z., Fahlgren, Noah, Gehan, Malia A., Cousins, Asaph B., and Baxter, Ivan. Components of Water Use Efficiency Have Unique Genetic Signatures in the Model C 4 Grass Setaria. United States: N. p., 2018.
Web. doi:10.1104/pp.18.00146.
Feldman, Max J., Ellsworth, Patrick Z., Fahlgren, Noah, Gehan, Malia A., Cousins, Asaph B., & Baxter, Ivan. Components of Water Use Efficiency Have Unique Genetic Signatures in the Model C 4 Grass Setaria. United States. https://doi.org/10.1104/pp.18.00146
Feldman, Max J., Ellsworth, Patrick Z., Fahlgren, Noah, Gehan, Malia A., Cousins, Asaph B., and Baxter, Ivan. Thu .
"Components of Water Use Efficiency Have Unique Genetic Signatures in the Model C 4 Grass Setaria". United States. https://doi.org/10.1104/pp.18.00146.
@article{osti_1476383,
title = {Components of Water Use Efficiency Have Unique Genetic Signatures in the Model C 4 Grass Setaria},
author = {Feldman, Max J. and Ellsworth, Patrick Z. and Fahlgren, Noah and Gehan, Malia A. and Cousins, Asaph B. and Baxter, Ivan},
abstractNote = {Plant growth and water use are interrelated processes influenced by genetically controlled morphological and biochemical characteristics. Improving plant water use efficiency (WUE) to sustain growth in different environments is an important breeding objective that can improve crop yields and enhance agricultural sustainability. However, genetic improvement of WUE using traditional methods has proven difficult due to the low throughput and environmental heterogeneity of field settings. To overcome these limitations, this study utilizes a high-throughput phenotyping platform to quantify plant size and water use of an interspecific Setaria italica × Setaria viridis recombinant inbred line population at daily intervals in both well-watered and water-limited conditions. Our findings indicate that measurements of plant size and water use are correlated strongly in this system; therefore, a linear modeling approach was used to partition this relationship into predicted values of plant size given water use and deviations from this relationship at the genotype level. The resulting traits describing plant size, water use, and WUE all were heritable and responsive to soil water availability, allowing for a genetic dissection of the components of plant WUE under different watering treatments. Linkage mapping identified major loci underlying two different pleiotropic components of WUE. Lastly, this study indicates that alleles controlling WUE derived from both wild and domesticated accessions can be utilized to predictably modulate trait values given a specified precipitation regime in the model C4 genus Setaria.},
doi = {10.1104/pp.18.00146},
journal = {Plant Physiology (Bethesda)},
number = 2,
volume = 178,
place = {United States},
year = {Thu Aug 09 00:00:00 EDT 2018},
month = {Thu Aug 09 00:00:00 EDT 2018}
}
https://doi.org/10.1104/pp.18.00146
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