Seed treatment with prodigiosin controls damping-off of cucumber caused by Pythium ultimum

AMB Express

Table 1 Compounds identified in ethanol extracts of Serratia marcescens strains N4-5 and Tn246

Compound	Mass (m/z)	N4-5 Extract	Tn246 Extract
Prodigiosin	324	2,275,312 ± 320,322	1731 ± 1645
Serratamolide	487	8983 ± 1467	552 ± 135
Serratamolide (SW1)	515	653,922 ± 26,249	189,692 ± 16,528
Serratamolide	541	34,499 ± 3051	50,168 ± 9933
Serratamolide	543	66,513 ± 5029	85,575 ± 20,572
Serratamolide	571	3666 ± 579	21,212 ± 3593
Total protein	N/A	1422 ± 325	77 ± 20

Only compounds with a good match to compounds characterized in the literature are listed. Compounds were detected using LC/MS–MS. Values are the mean of two experiments with standard error. Prodigiosin and serratamolide values are area counts per second adjusted for dilution and normalized by protein concentration of cellular lysate [(counts/s)/(µg/mL)]. Total protein concentration (µg/mL) was of cell lysate resulting from sonication of strains N4-5 or Tn246. SW1, serrawettin W1; N/A, not applicable