Fig 5. PHA content (wt%) of photosynthetic bacteria cultured in seawater.

Rdv.sulfidophilum cells were cultured in growth medium until the cell cultures reached an approximate OD₆₆₀ value of 1.0 and then diluted to an OD₆₆₀ of 0.1 in s supplemented with 0.5% sodium acetate and/or 0.4 g/L of yeast extract. After 7 days, the cells were harvested, and intracellular PHA levels were characterized using GC-MS. Intracellular PHAs under growth conditions were analyzed using cells showing approximately OD₆₆₀ = 1.0. n. d., not detected. Data are the mean ± SD of at least three cultures. *Values that show significant differences compared to the growth conditions (p<0.05).