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. 2012 Jan;78(2):481–492. doi: 10.1128/AEM.06159-11

Fig 6.

Fig 6

Biostimulation of the introduced R. erythropolis strain by GCL and GHL. Four conditions were compared: no treatment (control), inoculation of strain R138R only, and inoculation of strain R138R with GCL and GHL treatment (0.4 g liter−1). For each condition, the number of total bacteria (CFU g [fresh weight] of roots−1) (A) as well as the percentage of AHL degraders (B) and AHL producers (C) was estimated. Gray columns indicate the percentage of strain R138R among total cultivable bacteria. Different letters indicate a significant difference (Mann-Whitney; α = 0.05) over time under the same condition. Vertical arrows indicate the introduction of strain R138R and GCL or GHL.