Rhamnolipids as platform molecules for production of potential anti-zoospore agrochemicals

Journal of Agricultural and Food Chemistry
Shida MiaoLu-Kwang Ju

Abstract

Rhamnolipid biosurfactants have potential applications in the control of zoosporic plant pathogens. However, rhamnolipids have not been closely investigated for the anti-zoospore mechanism or for developing new anti-zoospore chemicals. In this study, RhL-1 and RhL-3 groups of rhamnolipids were used to generate the corresponding RhL-2 and RhL-4 groups and the free diacids. Conversion of RhL-3 to RhL-1 was also accomplished in vitro with cellobiase as the catalyst. The anti-zoospore effects of RhL-1-RhL-4 and the diacids were investigated with zoospores of Phytophthora sojae. For RhL-1-RhL-4, approximately 20, 30, 40, and 40 mg/L, respectively, were found to be the lowest concentrations required to stop movement of all zoospores, which indicates that the anti-zoospore effect remains strong even after RhL-1 and RhL-3 are hydrolyzed into RhL-2 and RhL-4. The free diacids required a significantly higher critical concentration of about 125 mg/L. Rhamnose can be obtained as a co-product.

References

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Citations

Apr 8, 2016·Journal of Agricultural and Food Chemistry·Soroosh Soltani DashtbozorgLu-Kwang Ju
Mar 17, 2017·Journal of the American Chemical Society·Ricardo Palos PachecoJeanne E Pemberton
Oct 12, 2017·Applied Microbiology and Biotechnology·Jianwei ChenHong Wang
Mar 5, 2019·Journal of Applied Microbiology·P J NaughtonI M Banat
Mar 21, 2019·Pest Management Science·Ashwin Sancheti, Lu-Kwang Ju
Oct 6, 2020·Frontiers in Bioengineering and Biotechnology·Jérôme CrouzetStéphan Dorey
May 27, 2017·Environmental Science and Pollution Research International·Weifang ChenYuxiang Li
Jun 19, 2018·Synthetic and Systems Biotechnology·Ahmad Mohammad Abdel-Mawgoud, Gregory Stephanopoulos

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