Abstract
The impact of elevated [CO2] (e[CO2]) on crops often includes a decrease in their nutrient concentrations where reduced transpiration-driven mass flow of nutrients has been suggested to play a role. We used two independent approaches, a Free-Air CO2Enrichment (FACE) experiment in the South Eastern wheat belt of Australia and a simulation study employing the Agricultural Production Systems Simulator (APSIM), to show that transpiration (mm) and nutrient uptake (g m-2) of nitrogen (N), potassium (K), sulfur (S), calcium (Ca), magnesium (Mg), and manganese (Mn) in wheat are correlated under e[CO2], but that nutrient uptake per unit water transpired is higher under e[CO2] than under ambient [CO2] (a[CO2]). This result suggests that transpiration-driven mass flow of nutrients contributes to decreases in nutrient concentrations under e[CO2], but cannot solely explain the overall decline.
| Original language | English |
|---|---|
| Journal | Physiologia Plantarum |
| Early online date | 4 Dec 2017 |
| DOIs | |
| Publication status | E-pub ahead of print - 4 Dec 2017 |
Keywords
- Journal Article
Access to Document
- Houshmandfar_et_al_The_relationship_between_transpiration_Physiologia_Plantarum_2017
This is the peer reviewed version of the following article: Houshmandfar, A. , Fitzgerald, G. J., O'Leary, G. , Tausz‐Posch, S. , Fletcher, A. and Tausz, M. (2018), The relationship between transpiration and nutrient uptake in wheat changes under elevated atmospheric CO2. Physiol Plantarum. Accepted Author Manuscript. . doi:10.1111/ppl.12676, which has been published in final form at 10.1111/ppl.12676. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Self-Archiving.