Table 1 Nutrient content of foliage (leaf + pseudostem) of meadow fescue infected with Epichloë uncinata strain MaxR (MF-MaxR) and perennial ryegrass infected with Epichloë LpTG-3 strain AR37 (PR-AR37), or endophyte-free (MF-Nil, PR-Nil) grown in different Olsen P enriched soils (9, 18, 28. 78 mg/L).

From: Phosphorus induced changes in food quality enhance porina fitness feeding on Epichloë endophyte free forage grasses

Host	Endophyte		Soil Olsen P (mg/ L)				Endophyte	Soil Olsen P (mg/ L)				SED	p-value (Olsen P)	p-value (Olsen P x endophyte)
Host	Endophyte		9	18	28	78	Endophyte	9	18	28	78	SED	p-value (Olsen P)	p-value (Olsen P x endophyte)
Meadow fescue	Nil	Nitrogen (%)	2.74^ab	2.75^a	2.58^b	1.73^c	MaxR	2.90^ab	3.23^a	2.73^b	1.93^c	0.13	< 0.001	0.495
		Phosphorus (%)	0.18^c	0.24^b	0.26^b	0.34^a		0.18^c	0.25^b	0.24^b	0.36^a	0.01	< 0.001	0.233
		Potassium (%)	4.00^b	4.25^a	4.27^ab	3.67^c		4.10^b	4.67^a	4.25^ab	3.60^c	0.10	< 0.001	0.114
		Sulphur (%)	0.23	0.24	0.24	0.23		0.22	0.25	0.25	0.23	0.01	0.303	0.595
		Calcium (%)	0.48^a	0.43^bc	0.45^ab	0.42^c		0.54^a	0.44^bc	0.49^ab	0.42^c	0.02	0.012	0.523
		Magnesium (%)	0.23^a	0.23^a	0.24^a	0.20^b		0.27^a	0.27^a	0.26^a	0.22^b	0.01	0.003	0.810
		Sodium (%)	0.042^a	0.038^b	0.032^bc	0.024^c		0.054^a	0.028^b	0.025^bc	0.025^c	0.00	< 0.001	0.083
		Total Carbon (%)	40.80^b	41.06^a	41.71^a	41.66^a		39.5^b	41.66^a	41.86^a	41.51^a	0.27	0.020	0.131
		Iron (mg/kg)	156.42	105.68	109.68	99.18		235.00	207.18	105.68	100.68	30.47	0.101	0.266
		Manganese (mg/kg)	129.95^a	108.85^a	121.10^a	70.60^b		128.00^a	100.60^a	125.60^a	61.10^b	10.89	< 0.001	0.884
		Zinc (mg/kg)	159.55^a	73.09^b	70.59^b	78.34^b		134.00^a	95.84^b	66.09^b	85.09^b	13.77	0.001	0.626
		Copper (mg/kg)	10.35^a	9.28^a	10.03^ab	8.28^b		10.00^a	11.03^a	8.53^ab	8.28^b	0.55	0.018	0.059
		Boron (mg/kg)	6.00	6.26	6.26	6.51		7.00	6.26	6.01	6.01	0.36	0.981	0.568
Perennial ryegrass	Nil	Nitrogen (%)	3.375^a	3.15^a	2.60^b	1.525^c	AR37	3.30^a	3.15^a	2.35^b	2.18^c	0.14	< 0.001	0.061
		Phosphorus (%)	0.20^cd	0.23^bc	0.24^b	0.25^b		0.17^e	0.20^de	0.20^cd	0.28^a	0.01	< 0.001	0.007
		Potassium (%)	4.13^a	4.15^a	3.70^bc	2.83^d		4.08^ab	4.23^a	3.38^c	3.38^c	0.12	< 0.001	0.027
		Sulphur (%)	0.27	0.28	0.30	0.28		0.27	0.25	0.27	0.30	0.01	0.278	0.318
		Calcium (%)	0.55^a	0.49^b	0.51^ab	0.40^c		0.52^a	0.47^b	0.49^ab	0.45^c	0.02	0.001	0.380
		Magnesium (%)	0.22^a	0.23^a	0.21^ab	0.15^c		0.20^ab	0.20^ab	0.19^b	0.20^ab	0.01	0.019	0.005
		Sodium (%)	0.35	0.34	0.35	0.35		0.32	0.28	0.26	0.25	0.04	0.836	0.884
		Total Carbon (%)	40.85^b	40.93^b	41.78^a	41.1^ab		41.20^b	41.33^b	42.30^a	42.25^ab	0.27	0.013	0.573
		Iron (mg/kg)	153.00	116.00	125.50	108.00		124.50	99.50	132.75	77.50	18.75	0.173	0.812
		Manganese (mg/kg)	165.0^a	146.75^b	125.5^b	79.50^c		143.75^a	111.25^b	121.50^b	73.25^c	10.38	< 0.001	0.538
		Zinc (mg/kg)	187.25^a	138.50^b	114.75^b	122.50^b		140.00^a	80.00^b	84.25^b	88.50^b	17.49	0.016	0.895
		Copper (mg/kg)	14.00^ab	13.00^a	12.50^b	9.25^c		11.50^ab	13.50^a	10.50^b	10.00^c	0.72	0.001	0.141
		Boron (mg/kg)	6.75^ab	6.00^c	6.25^bc	7.00^a		6.00^ab	5.25^c	5.50^bc	6.25^a	0.30	0.033	1.000

Values with the same letter within a nutrient and each host-endophyte combination are not significantly different between Olsen P levels at α < 0.05 (Fisher’s protected least significant difference test). If an interaction between Olsen P x endophyte was detected, values with the same letter within a nutrient and host-endophyte association are not significantly different at α < 0.05 (Fisher’s protected least significant difference test).

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