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Research Project: Health-Promoting Bioactives and Biobased Pesticides from Medicinal and Herbal Crops Location:
                                Natural Products Utilization Research Title:   Author  item
                                            CHEN, YUYAN - Hunan University Of Science And Technologyitem
                                            LI, JUAN - Hunan University Of Chinese Medicineitem
                                            LI, SHUN XIANG - Hunan University Of Chinese Medicineitem
                                            ZHAO, JIANPING - University Of Mississippiitem
                                            Bernier, Ulrichitem
                                            Becnel, Jamesitem
                                            Agramonte, Natashaitem
                                            Duke, Stephenitem
                                            Cantrell, Charlesitem
                                            Wedge, David
  Submitted to: American Chemical Society Symposium Series
                                    Publication Type: Peer Reviewed Journal
                                    Publication Acceptance Date: 2/10/2016
                                    Publication  Date: 8/25/2016
                                    Citation: Chen, Y., Li, J., Li, S., Zhao, J., Bernier, U.R., Becnel, J.J., Agramonte, N.M., Duke, S.O., Cantrell, C.L., Wedge, D.E. 2016. Identification and characterization of biopesticides from Acorus Tatarinowii and A. Calamus. American Chemical Society Symposium Series. 1218:121-143.Interpretive Summary: This paper documents the investigation of essential oils of two selected Acorus species used commonly in Traditional Chinese Medicine and describes their antifungal, mosquito larvicidal, and adult mosquito biting deterrent activities. Eleven compounds and essential oils were evaluated for their antifungal activity against plant pathogens, toxicity against mosquito larvae, mosquito repellent activity and phytotoxicity. Several compounds and essential oils showed some activity in these bioassays. Most active compounds or mixtures of compounds from Acorus species may  lead to the new potential biopesticides.
                                Technical Abstract: Acorus species are rich in secondary compounds and possess high contents of essential oils in their rhizomes. Here we report the isolation, characterization and antifungal activity of eleven compounds from A. tatarinowii Schott. and A. calamus Linn. Five of the compounds had weak antifungal activity against the plant pathogens Colletotrichum acutatum, C. fragariae and C. gloeosporioides. The essential oils were more active as mosquito larvacides than any of the isolated compounds with 100% mortality at 31.25 ppm. Isocalamusenone was more active at a dose of 0.78 ug as an adult insecticide than the essential oils or other purified compounds. A. tatarinowii essential oil was a good mosquito repellent. Several of the compounds were moderately phytotoxic to bentgrass (Agrostis stolonifer) and duckweed (Lemna paucicostata), but not to lettuce (Lactuca sativa). Results indicated that compounds or mixtures of compounds from Acorus species may yield new biopesticide leads.


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