Table 2. ECF sigma factors in the genome of Pseudomonas syringae pv. syringae strain B728a.
| ECF sigma factor gene(ECF groupa) | Locus tag | ECF description and associated function | Percent amino acid homologyb |
| ecf18 | Psyr_0362 | RpoT-like ECF σ factor associated with toluene tolerance | 94% PSPPH_0345, 94% PSPTO_5176 |
| ecf11 | Psyr_0892 | Cytoplasmic sensing ECF σ factor | 97% PSPPH_0927, 94% PSPTO_1043 |
| ecf5 | Psyr_1040 | FecI-like ECF σ factor regulator associated with iron uptake | 94% PSPPH_1093, 92% PSPTO_1209 |
| ecf7 | Psyr_1107 | FecI-like ECF σ factor regulator associated with iron uptake | 92% PSPPH_1175, 88% PSPTO_1286 |
| hrpL (ECF32) | Psyr_1217 | ECF σ factor regulates expression of the type III secretion genes | 92% PSPPH_1294, 88% PSPTO_1404 |
| pvdS (ECF9) | Psyr_1943 | FecI-like ECF σ factor regulator of pyoverdine gene cluster | 98% PSPPH_1909, 97% PSPTO_2133 |
| sigX (ECF1) | Psyr_2096 | RpoE-like ECF σ factor and likely regulator of oprF gene | 98% PSPPH_2067, 98% PSPTO_2298 |
| acsS (ECF5) | Psyr_2580 | FecI-like ECF σ factor regulator of achromobactin gene cluster | 98% PSPPH_2747, No PSPTO homolog |
| algU (ECF2) | Psyr_3958 | RpoE-like ECF σ factor regulator of alginate gene cluster, heat-shock, and oxidative stress | 100% PSPPH_3955, 99% PSPTO_4224 |
| ecf6 | Psyr_4731 | FecI-like ECF σ factor regulator associated with iron uptake | 94% PSPPH_4765, 92% PSPTO_0444 |
a
ECF classification system according to Staroń et al. [27].
b
The closest homologs found in the genomes of P. syringae pv. phaseolicola strain 1448A and P. syringae pv. tomato strain DC3000 using BLASTP at the NCBI website.