Table 1.

Concentrations of measured elements in leaf (A), phloem (B), and xylem (C) tissues along with the major contributors to phloem osmotic potential (D)

	Control	Water deficit		Flooded
	x± se x± se	Sig	x±se	Sig
(A) Leaf (mmol kg-1 dry weight)
Calcium	22.3±1.9	23.2±2.8	–	23.8±2.6	–
Potassium	520±28	584±37	–	672±53	–
Magnesium	95.5±7.9	96.9±8.6	–	97.1±8.3	–
Sodium	308.6±13	330±14	–	323±17	–
Phosphorus	39.3±3.3	44.0±4.5	–	31.2±3.2	–
Sulphur	16.9±1.2	22.0±0.7	–	34.0±8.4	–
(B) Phloem (mM)
Calcium	0.62±0.07	0.60±0.11	–	0.38±0.06	–
Potassium	35.1±1.5	43.4±1.8	*	38.2±4.6	–
Magnesium	1.17±0.07	1.04±0.12	–	1.26±0.15	–
Sodium	23.1±2.5	21.1±4.2	–	20.2±3.6	–
Phosphorus	3.98±0.21	3.50±0.22	–	4.86±0.70	–
Sulphur	1.34±0.17	1.93±0.16	–	1.46±0.35	–
(C) Xylem (mM)
Calcium	0.28±0.03	n/a	–	0.18±0.05	–
Potassium	1.77±0.19	n/a	–	2.37±0.73	–
Magnesium	0.28±0.04	n/a	–	0.39±0.08	–
Sodium	2.61±0.32	n/a	–	3.22±0.49	–
Phosphorus	0.20±0.01	n/a	–	0.54±0.15	–
Sulphur	0.06±0.01	n/a	–	0.35±0.02	–
(D) Contribution to phloem πs (MPa)
Sucrose	0.43±0.01	0.47±0.01	**	0.42±0.01	–
Raffinose	0.08±0.01	0.06±0.00	–	0.12±0.01	**
Potassium	0.09±0.00	0.11±0.01	**	0.09±0.01	–
Sodium	0.05±0.00	0.05±0.01	–	0.05±0.01	–

Concentrations of measured ions in leaf tissues, phloem and xylem sap from E. globulus subjected to well-watered, water-deficit or flooding treatments. Treatments were imposed for a period of 2 weeks. Major contributors to phloem osmotic potential are also given in MPa. Average values are presented along with the associated standard error (7≤n ≤9). Significant differences in composition compared to control plants (well-watered, not flooded) are shown. P values were calculated using Tukey's honestly significant difference post-hoc test mean values where *P=0.05–0.01, **P=0.01–0.001, ***P <0.001.