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Bioresources and Bioprocessing
Fig. 2 | Bioresources and Bioprocessing

Fig. 2

From: Nutrients, surfactants, and aeration in constructed wetlands affect bacterial persistence and metabolic activity during the remediation of crude oil-contaminated water

Fig. 2

Bacterial colonization (CFU g− 1 dry weight of soil/plant material), gene abundance (copies of alkB g− 1 dry weight of soil/plant material) and gene expression (transcripts level of alkB gene g− 1 dry weight of soil/plant material) present in rhizosphere (RH), root interior (RI) and shoot interior (SI) of T. latifolia and C. laevigatus at day 1 (A), day 30 (B) and day 60 (C) in different treatments. crude oil spiked CWs vegetated with T. latifolia and inoculated with the bacteria (T2); crude oil spiked CWs vegetated with T. latifolia and inoculated with the bacteria and supplied with nutrients, surfactant and aeration (T3); crude oil spiked CWs vegetated with C. laevigatus and inoculated with the bacteria (T5), crude oil spiked CWs vegetated with C. laevigatus and inoculated with the bacteria and supplied with nutrients, surfactant and aeration (T6). The values with same letter are not different at 5% significance level. The analysis of variance (ANOVA) was used for evaluations amongst different treatments. (Y axis shows value in ex)

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