Soil microorganism colonization influenced the growth and secondary metabolite accumulation of Bletilla striata (Thunb.) Rchb. F.

Table 2 Correlations between the abundance of fungal genera or species and the growth or production of secondary metabolites in B. striata

Taxon	Growth indicators						Secondary metabolite indicators
	Root length (mm)		Dry weight of roots (g)		Dry weight of tubers (g)		Militarine in the tuber (%)
	R-value	P-value	R-value	P-value	R-value	P-value	R-value	P-value
g_Cercophora	0.2777	0.5942	0.2639	0.6133	0.0273	0.9591	0.1729	0.7433
g_Plectosphaerella	0.0499	0.9251	0.0785	0.8825	0.4058	0.4247	0.0467	0.9300
g_Paramyrothecium	0.1935	0.7130	0.5412	0.2675	0.2647	0.6121	0.2736	0.5998
g_Pyrenochaeta	0.3465	0.5009	0.3610	0.4821	0.4614	0.3570	0.6164	0.1924
g_Myrmecridium	0.5459	0.2625	0.7186	0.1076	0.3851	0.4510	0.3016	0.5613
g_Apiotrichum	0.6340	0.1765	0.3596	0.4839	0.6986	0.1225	0.9080	0.0123
g_Entrophospora	0.6870	0.1316	0.8806	0.0205	0.4423	0.4423	0.2782	0.5935
g_Mortierella	0.4147	0.4135	0.4320	0.3924	0.5636	0.7355	0.3857	0.4500
g_Aspergillus	0.9392	0.0054	0.7826	0.0658	0.0699	0.8953	0.3226	0.5328
g_Fusarium	0.8900	0.0175	0.6855	0.1328	0.1170	0.8253	0.0982	0.8532
s_Apiotrichum montevideense	0.6404	0.1707	0.3709	0.4692	0.6987	0.1225	0.9508	0.0036
s_Neocosmospora rubicola	0.8267	0.0424	0.5834	0.2241	0.0180	0.9730	0.2699	0.6050
s_Entrophospora sp	0.5165	0.2941	0.6173	0.1917	0.3359	0.5152	0.2637	0.6137
s_Rozellomycota sp	0.3860	0.4496	0.1233	0.8159	0.01846	0.9723	0.1994	0.7049

Data are based on analyses of three B. striata samples from each soil type described in Fig. 2A. Root length, dry weight of roots and tubers served as an indicator of growth; militarine, as indicators of secondary metabolite in the tuber of B. striata. Correlations were considered significant if │R│ > 0.3 and P < 0.05

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