Volatile organic compounds (VOCs) play an essential role in microbe-microbe and plant-microbe interactions. We investigated the interaction between two plant growth-promoting rhizobacteria, and their interaction with tomato plants. VOCs produced by MVC 21 modulates the release of siderophores, the solubilisation of phosphate and potassium by () MVC 17. Moreover, VOCs produced by MVC 21 increased lateral root density (LRD), root and shoot dry weight of tomato seedlings. Among the VOCs released by MVC 21, only dimethyl disulfide (DMDS) showed effects similar to MVC 21 VOCs. Because of the effects on plants and bacterial cells, we investigated how MVC 21 VOCs might influence bacteria-plant interaction. Noteworthy, VOCs produced by MVC 21 boosted the ability of MVC 17 to increase LRD and root dry weight of tomato seedlings. These results could be explained by the positive effect of DMDS and MVC 21 VOCs on acid 3-indoleacetic production in MVC 17. Overall, our results clearly indicated that MVC 21 is able to establish a beneficial interaction with MVC 17 and tomato plants through the emission of DMDS.
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| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC8229667 | PMC |
| http://dx.doi.org/10.3390/microorganisms9061186 | DOI Listing |
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