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Title: Bioenergy sorghum crop model predicts VPD-limited transpiration traits enhance biomass yield in water-limited environments

Journal Article · · Frontiers in Plant Science

Bioenergy sorghum is targeted for production in water-limited annual cropland therefore traits that improve plant water capture, water use efficiency, and resilience to water deficit are necessary to maximize productivity. A crop modeling framework, APSIM, was adapted to predict the growth and biomass yield of energy sorghum and to identify potentially useful traits for crop improvement. APSIM simulations of energy sorghum development and biomass accumulation replicated results from field experiments across multiple years, patterns of rainfall, and irrigation schemes. Modeling showed that energy sorghum’s long duration of vegetative growth increased water capture and biomass yield by ~30% compared to short season crops in a water-limited production region. Additionally, APSIM was extended to enable modeling of VPD-limited transpiration traits that reduce crop water use under high vapor pressure deficits (VPDs). The response of transpiration rate to increasing VPD was modeled as a linear response until a VPD threshold was reached, at which the slope of the response decreases, representing a range of responses to VPD observed in sorghum germplasm. Simulation results indicated that the VPD-limited transpiration trait is most beneficial in hot and dry regions of production where crops are exposed to extended periods without rainfall during the season or to a terminal drought. In these environments, slower but more efficient transpiration increases biomass yield and prevents or delays the exhaustion of soil water and onset of leaf senescence. The VPD-limited transpiration responses observed in sorghum germplasm increased biomass accumulation by 20% in years with lower summer rainfall, and the ability to drastically reduce transpiration under high VPD conditions could increase biomass by 6% on average across all years. This work indicates that the productivity and resilience of bioenergy sorghum grown in water-limited environments could be further enhanced by development of genotypes with optimized VPD-limited transpiration traits and deployment of these crops in water limited growing environments. As a result, the energy sorghum model and VPD-limited transpiration trait implementation aremade available to simulate performance in other target environments.

Research Organization:
Texas A & M Univ., College Station, TX (United States)
Sponsoring Organization:
USDOE Office of Science (SC)
Grant/Contract Number:
SC0012629; FC02-07ER64494; AR0000596
OSTI ID:
1367176
Journal Information:
Frontiers in Plant Science, Vol. 8; ISSN 1664-462X
Publisher:
Frontiers Research FoundationCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 10 works
Citation information provided by
Web of Science

References (57)

The watershed-scale optimized and rearranged landscape design (WORLD) model and local biomass processing depots for sustainable biofuel production: Integrated life cycle assessments journal July 2013
Molecular characterization of a mutation affecting abscisic acid biosynthesis and consequently stomatal responses to humidity in an agriculturally important species journal January 2015
Development and evaluation of a sorghum model based on CERES-Maize in a semi-arid tropical environment journal August 1990
Limited-Transpiration Trait May Increase Maize Drought Tolerance in the US Corn Belt journal November 2015
The Evolution of Mechanisms Driving the Stomatal Response to Vapor Pressure Deficit journal January 2015
Exploiting the potential of plants with crassulacean acid metabolism for bioenergy production on marginal lands journal April 2009
Bioenergy crop models: descriptions, data requirements, and future challenges journal March 2012
Genotype by environment interactions affecting grain sorghum. II. Frequencies of different seasonal patterns of drought stress are related to location effects on hybrid yields journal January 2000
Genotype by environment interactions affecting grain sorghum. III. Temporal sequences and spatial patterns in the target population of environments journal January 2000
ABA‐deficient ( aba1 ) and ABA‐insensitive ( abi1‐1, abi2‐1 ) mutants of Arabidopsis have a wild‐type stomatal response to humidity journal April 2000
Abscisic Acid: Emergence of a Core Signaling Network journal June 2010
Adapting APSIM to model the physiology and genetics of complex adaptive traits in field crops journal April 2010
Genetic Control of a Photoperiod-Sensitive Response in Sorghum bicolor (L.) Moench journal January 1999
An Overview of the Global Historical Climatology Network-Daily Database journal July 2012
Any trait or trait-related allele can confer drought tolerance: just design the right drought scenario journal September 2011
Yield Results and Stability Analysis from the Sorghum Regional Biomass Feedstock Trial journal March 2014
APSIM – Evolution towards a new generation of agricultural systems simulation journal December 2014
Plant Productivity and Environment journal October 1982
Greater Sensitivity to Drought Accompanies Maize Yield Increase in the U.S. Midwest journal May 2014
Water: the most important ‘molecular’ component of water stress tolerance research journal January 2013
Improving Photosynthetic Efficiency for Greater Yield journal June 2010
Chemical Screen for Limited-Transpiration-Rate Trait Among Sorghum Genotypes journal May 2014
An overview of APSIM, a model designed for farming systems simulation journal January 2003
Potential yield and water-use efficiency benefits in sorghum from limited maximum transpiration rate journal January 2005
Energy Sorghum--a genetic model for the design of C4 grass bioenergy crops journal June 2014
Water-Use Efficiency in Crop Production journal January 1984
Drought and ABA effects on aquaporin content translate into changes in hydraulic conductivity and leaf growth rate: A trans-scale approach journal June 2009
Sorghum Crop Modeling and Its Utility in Agronomy and Breeding book January 2016
() Represses Sorghum Flowering in Long Days: Alleles Enhance Biomass Accumulation and Grain Production journal January 2014
The U.S. drought of 2012 in perspective: A call to action journal September 2013
Modelling the effect of plant water use traits on yield and stay-green expression in sorghum journal January 2014
Energy sorghum hybrids: Functional dynamics of high nitrogen use efficiency journal September 2013
Plant Water Uptake in Drying Soils journal February 2014
Stomatal Response to Abscisic Acid Is a Function of Current Plant Water Status journal February 1992
Agrochemical control of plant water use using engineered abscisic acid receptors journal February 2015
Assessing climatic risk to sorghum production in water-limited subtropical environments I. Development and testing of a simulation model journal March 1994
Modelling environmental effects on phenology and canopy development of diverse sorghum genotypes journal March 2009
Designing sorghum as a dedicated bioenergy feedstock journal October 2007
Harnessing Genetic Variation in Leaf Angle to Increase Productivity of Sorghum bicolor journal August 2015
Genetic variability of transpiration response to vapor pressure deficit among sorghum genotypes journal October 2010
On the extent of genetic variation for transpiration efficiency in sorghum journal January 1997
The shifting influence of drought and heat stress for crops in northeast Australia journal September 2015
Plants and population: Is there time? journal May 1999
Drought decision-making journal July 2010
High biomass yield energy sorghum: developing a genetic model for C4 grass bioenergy crops: Modeling and Analysis: Developing a genetic model for C4 grass bioenergy crops journal September 2012
Multi-scale predictions of massive conifer mortality due to chronic temperature rise journal December 2015
Coincident light and clock regulation of pseudoresponse regulator protein 37 (PRR37) controls photoperiodic flowering in sorghum journal September 2011
Prognosis for genetic improvement of yield potential and water-limited yield of major grain crops journal March 2013
Drought and Abscisic Acid Effects on Aquaporin Content Translate into Changes in Hydraulic Conductivity and Leaf Growth Rate: A Trans-Scale Approach journal February 2009
The Stomatal Response to Reduced Relative Humidity Requires Guard Cell-Autonomous ABA Synthesis journal January 2013
Hydraulic conductance differences among sorghum genotypes to explain variation in restricted transpiration rates journal January 2014
Sorghum Phytochrome B Inhibits Flowering in Long Days by Activating Expression of SbPRR37 and SbGHD7, Repressors of SbEHD1, SbCN8 and SbCN12 journal August 2014
Is the Stay-Green Trait in Sorghum a Result of Transpiration Sensitivity to Either Soil Drying or Vapor Pressure Deficit? journal September 2013
Persistence of limited-transpiration-rate trait in sorghum at high temperature journal July 2015
Steep, cheap and deep: an ideotype to optimize water and N acquisition by maize root systems journal January 2013
APSIM: a novel software system for model development, model testing and simulation in agricultural systems research journal January 1996
Transpiration efficiency: new insights into an old story journal March 2014

Cited By (2)

Vapour pressure deficit: The hidden driver behind plant morphofunctional traits in controlled environments journal September 2019
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