AI Article Synopsis
- Sodorifen, a major volatile compound from Serratia plymuthica 4Rx13, is believed to function as a long-distance communication signal among bacteria.
- In laboratory studies, co-cultivating S. plymuthica 4Rx13 with Bacillus subtilis B2g resulted in significant changes in sodorifen emissions compared to when S. plymuthica was grown alone.
- The combination led to a 50% decrease in sodorifen production during early growth, but a 217% increase was observed in later stages, highlighting how bacterial interactions can influence signaling compounds.
Article Abstract
Sodorifen is the major volatile of Serratia plymuthica 4Rx13. It is assumed to be a long-distance communication signal. However, so far the emission patterns of sodorifen had been studied using mono-cultures of S. plymuthica 4Rx13 neglecting that in natura bacteria live in communities. Here, we show that the structured co-cultivation of S. plymuthica 4Rx13 and Bacillus subtilis B2g in a low-diversity model community grown under nutrient-rich conditions led to quantitative changes in sodorifen emission compared to self-paired mono-cultivations. Co-culturing revealed a decreased emission of sodorifen (50%) during exponential growth phase, whereas in the late stationary stage of growth, the amount of headspace sodorifen was increased compared to self-paired mono-cultivation (217% at 500 h of cultivation). Six other compounds that are most probably related to sodorifen or are isomers showed similar emission patterns. These data indicated that S. plymuthica 4Rx13 enhances its communication signal sodorifen as a consequence of interaction with B. subtilis B2g.
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