TABLE 3.
Changes in the expression of AI-2 uptake genes in E. coli O157:H7 biofilms after exposure to EPI and NE
| Gene | Biological process description | Relative change in expression (n-fold) determined by the indicated methoda
|
||
|---|---|---|---|---|
| Microarray
|
RT-PCR (EPI) | |||
| EPI | NE | |||
| lsrB | AI-2 transporter | −7.0 | −5.3 | −2.5 |
| lsrG | Antibiotic biosynthesis | −3.2 | −3.0 | |
| lsrD | Transport | −3.2 | −1.4 | |
| lsrA | Transport | −9.8 | −5.3 | −4.8 |
| lsrC | Transport | −4.3 | −2.3 | −2.4 |
| lsrK | Carbohydrate metabolism | −2.8 | −2.3 | |
| lsrR | Regulation of transcription; DNA dependent | −3.7 | −3.7 | |
a
Values are based on an exposure of 7 h. Significant changes are in boldface.