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Physiological trait networks enhance understanding of crop growth and water use in contrasting environments

OAR@ICRISAT

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Relation http://oar.icrisat.org/12290/
https://onlinelibrary.wiley.com/doi/full/10.1111/pce.14382
https://doi.org/10.1111/pce.14382
 
Title Physiological trait networks enhance understanding of crop growth and water use in contrasting environments
 
Creator Gleason, S M
Barnard, D M
Green, T R
Mackay, S
Wang, D R
Ainsworth, E A
Altenhofen, J
Brodribb, T J
Cochard, H
Comas, L H
Cooper, M
Creek, D
DeJonge, K C
Delzon, S
Fritschi, F B
Hammer, G
Hunter, C
Lombardozzi, D
Messina, C D
Ocheltree, T
Stevens, B M
Stewart, J J
Vadez, V
Wenz, J
Wright, I J
Yemoto, K
Zhang, H
 
Subject Crop Improvement
Maize
Plant Growth
 
Description Plant function arises from a complex network of structural and physiological traits. Explicit representation of these traits, as well as their connections with other biophysical processes, is required to advance our understanding of plant-soil-climate interactions. We used the Terrestrial Regional Ecosystem Exchange Simulator (TREES) to evaluate physiological trait networks in maize. Net primary productivity (NPP) and grain yield were simulated across five contrasting climate scenarios. Simulations achieving high NPP and grain yield in high precipitation environments featured trait networks conferring high water use strategies: deep roots, high stomatal conductance at low water potential (“risky” stomatal regulation), high xylem hydraulic conductivity and high maximal leaf area index. In contrast, high NPP and grain yield was achieved in dry environments with low late-season precipitation via water conserving trait networks: deep roots, high embolism resistance and low stomatal conductance at low leaf water potential (“conservative” stomatal regulation). We suggest that our approach, which allows for the simultaneous evaluation of physiological traits, soil characteristics and their interactions (i.e., networks), has potential to improve our understanding of crop performance in different environments. In contrast, evaluating single traits in isolation of other coordinated traits does not appear to be an effective strategy for predicting plant performance.
 
Publisher Wiley
 
Date 2022-06-23
 
Type Article
PeerReviewed
 
Format application/pdf
 
Language en
 
Rights cc_attribution
 
Identifier http://oar.icrisat.org/12290/1/Plant%20Cell%20Environment_45_2554-2572_2022.pdf
Gleason, S M and Barnard, D M and Green, T R and Mackay, S and Wang, D R and Ainsworth, E A and Altenhofen, J and Brodribb, T J and Cochard, H and Comas, L H and Cooper, M and Creek, D and DeJonge, K C and Delzon, S and Fritschi, F B and Hammer, G and Hunter, C and Lombardozzi, D and Messina, C D and Ocheltree, T and Stevens, B M and Stewart, J J and Vadez, V and Wenz, J and Wright, I J and Yemoto, K and Zhang, H (2022) Physiological trait networks enhance understanding of crop growth and water use in contrasting environments. Plant, Cell & Environment, 45. pp. 2554-2572. ISSN 1365-3040