Modeling the water use efficiency of soybean and maize plants under environmental stresses: application of a synthetic model of photosynthesis-transpiration based on stomatal behavior

2004 ◽  
Vol 161 (3) ◽  
pp. 303-318 ◽  
Author(s):  
Gui-Rui Yu ◽  
Qiu-Feng Wang ◽  
J.i.e. Zhuang
Keyword(s):  
Water Use Efficiency ◽  
Water Use ◽  
Environmental Stresses ◽  
Stomatal Behavior ◽  
Synthetic Model ◽  
Use Efficiency ◽  
Maize Plants

scholarly journals Salicaceae Endophytes Modulate Stomatal Behavior and Increase Water Use Efficiency in Rice

2018 ◽  
Vol 9 ◽  
Author(s):  
Hyungmin Rho ◽  
Victor Van Epps ◽  
Nicholas Wegley ◽  
Sharon L. Doty ◽  
Soo-Hyung Kim
Keyword(s):  
Water Use Efficiency ◽  
Water Use ◽  
Stomatal Behavior ◽  
Use Efficiency

scholarly journals Rhizophagus irregularis MUCL 41833 Improves Phosphorus Uptake and Water Use Efficiency in Maize Plants During Recovery From Drought Stress

2019 ◽  
Vol 10 ◽  
Author(s):  
Olivia Le Pioufle ◽  
Matike Ganoudi ◽  
Maryline Calonne-Salmon ◽  
Fatma Ben Dhaou ◽  
Stéphane Declerck
Keyword(s):  
Drought Stress ◽  
Water Use Efficiency ◽  
Water Use ◽  
Phosphorus Uptake ◽  
Rhizophagus Irregularis ◽  
Use Efficiency ◽  
Maize Plants

Natural variation in stomatal dynamics drives divergence in heat stress tolerance and contributes to the seasonal intrinsic water-use efficiency in Vitis vinifera (subsp. sativa and sylvestris)

2021 ◽  
Author(s):  
Michele Faralli ◽  
Luana Bontempo ◽  
Pier Luigi Bianchedi ◽  
Claudio Moser ◽  
Massimo Bertamini ◽  
...  
Keyword(s):  
Heat Stress ◽  
Water Use Efficiency ◽  
Water Use ◽  
Stomatal Closure ◽  
Critical Role ◽  
Evaporative Cooling ◽  
Co2 Uptake ◽  
Stomatal Behavior ◽  
Intrinsic Water Use Efficiency ◽  
Use Efficiency

Abstract Stomata control CO2 uptake for photosynthesis and water loss through transpiration, thus playing a key role in leaf thermoregulation, water-use efficiency (iWUE) and plant productivity. In this work, we investigated the relationship between several leaf traits and hypothesized that stomatal behavior to fast (i.e. minutes) environmental changes co-determines along with steady-state traits the physiological response of grapevine to the surrounding fluctuating environment over the growing season. No relationship between iWUE, heat stress (HS) tolerance and stomatal traits was observed in field grown grapevine, suggesting that other physiological mechanisms are involved in determining leaf evaporative cooling capacity and the seasonal ratio of CO2 uptake (A) to stomatal conductance (gs). Indeed, cultivars that in the field had an unexpected combination of high iWUE but low sensitivity to thermal stress, displayed a quick stomatal closure to light, but a sluggish closure to increased vapor pressure deficit (VPD) levels. This strategy aiming both at conserving water under a high-to-low light transition and in prioritizing evaporative cooling under a low-to-high VPD transition, was mainly observed in Regina and Syrah. Moreover, cultivars with different known responses to soil moisture deficit or high air VPD (isohydric vs anisohydric) had opposite behavior under fluctuating environments, with the isohydric cultivar showing slow stomatal closure to reduced light intensity but quick temporal responses to VPD manipulation. We propose that stomatal behavior to fast environmental fluctuations can play a critical role on leaf thermoregulation and water conservation under natural field conditions in grapevine.

Silicon Improves Water Use Efficiency in Maize Plants

2005 ◽  
Vol 27 (8) ◽  
pp. 1457-1470 ◽  
Author(s):  
Xiaopeng Gao ◽  
Chunqin Zou ◽  
Lijun Wang ◽  
Fusuo Zhang
Keyword(s):  
Water Use Efficiency ◽  
Water Use ◽  
Use Efficiency ◽  
Maize Plants

Water use efficiency of controlled alternate irrigation on root-divided maize plants

1998 ◽  
Vol 38 (1) ◽  
pp. 69-76 ◽  
Author(s):  
Shaozhong Kang ◽  
Zongsuo Liang ◽  
Wei Hu ◽  
Jianhua Zhang
Keyword(s):  
Water Use Efficiency ◽  
Water Use ◽  
Use Efficiency ◽  
Maize Plants

scholarly journals Phenotypic plasticity of root traits for improving deficit irrigation and growth performance in maize

2020 ◽  
Author(s):  
Mohammad Urfan ◽  
Haroon Rashid Hakla ◽  
Shubham Sharma ◽  
Mansi Sharma ◽  
Manu Khajuria ◽  
...  
Keyword(s):  
Water Use Efficiency ◽  
Water Use ◽  
Deficit Irrigation ◽  
Structural Equation ◽  
Root Traits ◽  
Root Surface ◽  
Root Surface Area ◽  
Maize Varieties ◽  
Use Efficiency ◽  
Maize Plants

AbstractRoot system architecture (RSAch) is central to drought management in plants. In this study, the mechanism of paclobutrazol (PBZ)-mediated improvement in tolerance to water deficit using five maize varieties was investigated. Comprehensive pot experiments were conducted during 2017, 2018 and 2019 and maize plants were subjected to 60% of evapotranspiration demand both in early deficit (EDI) and terminal deficit (TDI) irrigation regimes. Findings revealed that application of PBZ decreased plant height; while traits like stem diameter, root biomass, root length and root surface area under EDI and TDI improved significantly. Structural equation modelling of root traits revealed PBZ induced increase in root surface area (RSA) and length of seminal roots in EDI. For TDI, PBZ induced changes in RSA, length of seminal and brace roots and several reproductive attributes of the plant. Altogether, these findings propose improvement of root traits as an effective strategy to increase Water Use Efficiency of maize varieties with minimal impact on agronomic traits.Abstract FigureFigure graphical AbstractLife cycle of maize plants (Zea mays L.) is sensitive towards soil water availability, in particular establishment of young maize plants (from 0 days after sowing (DAS) to 35 DAS, early deficit irrigation, EDI) and 50 DAS to 65 DAS, a phase showing transition of vegetative to reproductive stage. Maize being a rain fed crop is mainly dependent upon rainwater, thus late arrival of monsoon or shorter spell of monsoon period in Indian sub continent poses water deficit or drought like conditions, consequently affecting the establishment of young plants and successful transition of vegetative to reproductive phase. In current study, early deficit irrigation (EDI) supplied 60% of the evapotranspiration demand (EVTD) commenced with or without paclobutrazol (PBZ) on 15 DAS to 35 DAS (for a period of 20 days) young maize plants mimicked the late arrival of monsoon by a period of 10-15 days. While, terminal deficit irrigation (TDI) supplied 60% of EVTD with or without PBZ at 54 DAS to 104 DAS (for a period of 50 days) plants mimicked shorter spell of monsoon, thereby reducing the soil water availability, affecting successful transition of vegetative to reproductive phase and formation of reproductive structures. Structural equation modeling (SEM) showed improved root traits and their contribution in enhancing water use efficiency resulting in better adaptation of maize under EDI and TDI, more specifically when applied with paclobutrazol. Happy maize plants in terms of improved water use efficiency (WUE) under TDI resulted in more cob yield specifically with paclobutrazol application, leading to enhanced farmers income and economic prosperity.

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