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Table 2 Indole acetic acid (IAA) production, phosphate (P) P solubilization, siderophore production, and hydrogen cyanide (HCN) production by bacterial strains

From: Evaluation of environmental bacterial communities as a factor affecting the growth of duckweed Lemna minor

Strain

IAA production

P solubilization

Siderophore production

HCN production

H1 (++)

−

+

−

−

H2 (−)

−

−

−

−

H3 (++)

+

+

+

+

H4 (+)

−

−

+

+

H5 (+/−)

−

−

−

−

H6 (−)

−

+

+

+

H7 (+)

+

+

−

−

H8 (++)

−

−

−

+

H9 (+/−)

+

−

−

+

H10 (+/−)

−

−

−

+

M1 (++)

+

+

+

+

M2 (++)

−

+

+

−

M3 (−−)

−

+

+

−

M4 (+/−)

−

+

+

+

M5 (−−)

−

−

−

−

M6 (−−)

+

−

+

+

M7 (+/−)

+

−

−

−

M8 (+)

+

−

−

−

M9 (+/−)

+

−

−

−

M10 (+/−)

−

+

+

+

M11 (+/−)

−

+

+

+

M12 (++)

+

+

+

+

  1. Symbols in parentheses indicate the effects on plant growth of strains (Fig. 3): ++, greater than 10%; +, between +5 and +10%; +/−, between −5 and +5%; −, between −5 and −10%; −−, less than −10%