Table 2. Biological characteristics.

		VL		VH		ZL		ZH		p-values
	N	mean	S.E.	mean	S.E.	mean	S.E.	mean	S.E.	overall ANOVA	VL vs. VH	ZL. vs. ZH
Soil
bacteria	16	10.30	0.06	10.10	0.04	10.10	0.06	10.20	0.04	0.073	0.059	0.058
actinobacteria	16	9.57	0.05	9.53	0.03	9.57	0.03	9.75	0.04	0.001	0.534	0.001
txtB.total (bulk and tuberosphere)	16	4.38	0.07	4.49	0.12	4.93	0.19	5.57	0.14	< 0.001	0.436	0.013
txtB.bulk	4	4.53	0.04	3.97	0.07	4.00	0.22	4.93	0.06	< 0.001	0.002	0.02
txtB.tuberosphere	12	4.33	0.09	4.67	0.13	5.80	0.14	5.27	0.15	< 0.001	0.044	0.015
Periderm
actinobacteria	12	7.82	0.12	8.74	0.17	9.40	0.13	9.27	0.11	< 0.001	< 0.001	0.45
txtB.periderm	12	6.10	0.05	7.18	0.16	7.31	0.15	7.51	0.12	< 0.001	< 0.001	0.312
Common scab severity	12	2.34	0.14	4.06	0.14	4.23	0.15	6.65	0.15	< 0.001	< 0.001	< 0.001

Quantity of bacteria, actinobacteria (16S rRNA gene) and txtB gene in soil and periderm. Means and respective standard errors (gene copies per gram soil, log10 transformed). Significantly higher values are in bold.