Characterization of an Endophytic Antagonistic Bacterial Strain Bacillus halotolerans LBG-1-13 with Multiple Plant Growth-Promoting Traits, Stress Tolerance, and Its Effects on Lily Growth

Figure 3

Qualitative detection of plant growth-promoting traits in the strain Bacillus halotolerans LBG-1-13. (a) Qualitative detection of IAA showing a change of coloration from yellow to pink. (b) Phosphate solubilization activity of strain LBG-1-13 was assayed on the Pikovskaya medium as a clearing area surrounding bacterial colonies. (c) Production of siderophore was confirmed by a change of color from blue (−) to yellow/orange (+) as indicated by chrome azurol S assay.

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