Root architecture for improved resource capture: Trade-offs in complex environments
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Root architecture for improved resource capture : Trade-offs in complex environments. / Van Der Bom, Frederik J.T.; Williams, Alwyn; Bell, Michael J.
I: Journal of Experimental Botany, Bind 71, Nr. 19, 2020, s. 5752-5763.Publikation: Bidrag til tidsskrift › Review › Forskning › fagfællebedømt
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TY - JOUR
T1 - Root architecture for improved resource capture
T2 - Trade-offs in complex environments
AU - Van Der Bom, Frederik J.T.
AU - Williams, Alwyn
AU - Bell, Michael J.
N1 - Funding Information: The authors acknowledge funding from the Grains Research and Development Corporation of Australia (Project no. UOQ1805-005RTX) that enabled this research to be conducted. We thank Pax Blamey for supportive discussions and suggestions, and we extend our gratitude to an anonymous reviewer who provided helpful feedback and ideas based on an earlier version of the manuscript. Publisher Copyright: © 2020 The Author(s) 2020. Published by Oxford University Press on behalf of the Society for Experimental Biology. All rights reserved.
PY - 2020
Y1 - 2020
N2 - Root architecture is a promising breeding target for developing resource-efficient crops. Breeders and plant physiologists have called for root ideotypes that have narrow, deep root systems for improved water and nitrate capture, or wide, shallower root systems for better uptake of less mobile topsoil nutrients such as phosphorus. Yet evidence of relationships between root architecture and crop yield is limited. Many studies focus on the response to a single constraint, despite the fact that crops are frequently exposed to multiple soil constraints. For example, in dryland soils under no-till management, topsoil nutrient stratification is an emergent profile characteristic, leading to spatial separation of water and nutrients as the soil profile dries. This results in spatio-temporal trade-offs between efficient resource capture and pre-defined root ideotypes developed to counter a single constraint. We believe there is need to identify and better understand trade-offs involved in the efficient capture of multiple, spatially disjunct soil resources. Additionally, how these trade-offs interact with genotype (root architecture), environment (soil constraints), and management (agronomy) are critical unknowns. We argue that identifying root traits that enable efficient capture of multiple soil resources under fluctuating environmental constraints is a key step towards meeting the challenges of global food security.
AB - Root architecture is a promising breeding target for developing resource-efficient crops. Breeders and plant physiologists have called for root ideotypes that have narrow, deep root systems for improved water and nitrate capture, or wide, shallower root systems for better uptake of less mobile topsoil nutrients such as phosphorus. Yet evidence of relationships between root architecture and crop yield is limited. Many studies focus on the response to a single constraint, despite the fact that crops are frequently exposed to multiple soil constraints. For example, in dryland soils under no-till management, topsoil nutrient stratification is an emergent profile characteristic, leading to spatial separation of water and nutrients as the soil profile dries. This results in spatio-temporal trade-offs between efficient resource capture and pre-defined root ideotypes developed to counter a single constraint. We believe there is need to identify and better understand trade-offs involved in the efficient capture of multiple, spatially disjunct soil resources. Additionally, how these trade-offs interact with genotype (root architecture), environment (soil constraints), and management (agronomy) are critical unknowns. We argue that identifying root traits that enable efficient capture of multiple soil resources under fluctuating environmental constraints is a key step towards meeting the challenges of global food security.
KW - Drought
KW - Nitrogen
KW - Phosphorus
KW - Resource interactions
KW - Root ideotypes
KW - Root morphology
KW - Root plasticity
KW - Rooting depth
KW - Shallow roots
KW - Water
U2 - 10.1093/jxb/eraa324
DO - 10.1093/jxb/eraa324
M3 - Review
AN - SCOPUS:85100051715
VL - 71
SP - 5752
EP - 5763
JO - Journal of Experimental Botany
JF - Journal of Experimental Botany
SN - 0022-0957
IS - 19
ER -
ID: 318527438