Research Article

Control of Cultivable IAA-Producing Bacteria by the Plant Arabidopsis thaliana and the Earthworm Aporrectodea caliginosa

Figure 1

Average IAA concentration at 24, 48, and 72 h by cultivable soil bacteria from soil without macroorganisms (S), with the plant Arabidopsis thaliana (P), with the earthworm Aporrectodea caliginosa (E) and with both plant and earthworms (PE). Means ± s.e., n = 17, different letters indicate a significant difference, Tukey HSD, P < 0.05.
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