Elevated CO2 decreases both transpiration flow and concentrations of Ca and Mg in the xylem sap of wheat

Alireza Houshmandfar*, Glenn J. Fitzgerald, Michael Tausz

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

26 Citations (Scopus)

Abstract

The impact of elevated atmospheric [CO2] (e[CO2]) on plants often includes a decrease in their nutrient status, including Ca and Mg, but the reasons for this decline have not been clearly identified. One of the proposed hypotheses is a decrease in transpiration-driven mass flow of nutrients due to decreased stomatal conductance. We used glasshouse and Free Air CO2 Enrichment (FACE) experiments with wheat to show that, in addition to decrease in transpiration rate, e[CO2] decreased the concentrations of Ca and Mg in the xylem sap. This result suggests that uptake of nutrients is not only decreased by reduced transpiration-driven mass flow, but also by as yet unidentified mechanisms that lead to reduced concentrations in the xylem sap.

Original languageEnglish
Pages (from-to)157-160
Number of pages4
JournalJournal of Plant Physiology
Volume174
Early online date27 Oct 2014
DOIs
Publication statusPublished - 1 Feb 2015

Keywords

  • Calcium
  • Elevated CO
  • Magnesium
  • Transpiration
  • Xylem sap

ASJC Scopus subject areas

  • Physiology
  • Agronomy and Crop Science
  • Plant Science

Fingerprint

Dive into the research topics of 'Elevated CO2 decreases both transpiration flow and concentrations of Ca and Mg in the xylem sap of wheat'. Together they form a unique fingerprint.

Cite this