Early changes of the pH of the apoplast are different in leaves, stem and roots of Vicia faba L. under declining water availability

• Authors: THIRUPATHI Karuppana Pandian; GEILFUS Christoph-Martin; MÜHLING Karl-Hermann; NOVÁK Ondrej; GLOSER Vít
• Year of publication: 2017
• Type: Article in Periodical
• Magazine / Source: Plant Science
• MU Faculty or unit: Faculty of Science
• Doi: http://dx.doi.org/10.1016/j.plantsci.2016.11.010
• Field: Physiology
• Keywords: Drought stress; Abscisic acid; Soil drying; Xylem sap; Osmolality; Water relations; Leaf water potential
• Description: Changes in pH of the apoplast have recently been discussed as an important factor in adjusting transpiration and water relations under conditions of drought via modulatory effect on abscisic acid (ABA) concentration. Using Vicia faba L., we investigated whether changes in the root, shoot and leaf apoplastic pH correlated with (1) a drought-induced reduction in transpiration and with (2) changes in ABA concentration.

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