TABLE 2.
DNA yields and luxE recovery in surficial sediment samples of Chattanooga Creek
| Zonea | Sample | DNA yieldb (μg of DNA/g dw) | luxE recoveryb (%) |
|---|---|---|---|
| I | 1 | 4.5 ± 0.8 (4.3) | 18.4 ± 8.0 (0.001) |
| 2 | 28.4 ± 1.5 | 82 ± 13.7 | |
| II | 3 | 9.6 ± 0.2 | 107.9 ± 3.3 |
| 4 | 10.3 ± 0.2 | 50.8 ± 10.8 | |
| III | 5 | 26.4 ± 4.1 | 55.2 ± 14.9 |
| 6 | 30.8 ± 1.3 (29) | 65.4 ± 16.5 (0.0004) | |
| 7 | 20 ± 0.9 | 54 ± 9.0 | |
| 8 | 15.7 ± 0.6 | 37.9 ± 3.4 | |
| 9 | 17.4 ± 0.2 | 37.8 ± 6.7 |
a
Zones I, II, and III correspond to background upstream from the source of contamination, remediated, and contaminated nonremediated sections of the creek, respectively (Fig. 2C).
b
Averages ± standard deviations for triplicate extractions are indicated. Values in parentheses for samples 1 and 6 indicate DNA yields and luxE recoveries for DNA extractions without luxE addition.