Planta Med 2011; 77 - P_46
DOI: 10.1055/s-0031-1273575

Antifungal and Insecticide Activities of Twenty Three Spices Against Plant Pathogens

N Tabanca 1, MM Radwan 2, SJ Cutler 3, UR Bernier 4, JJ Becnel 4, DE Wedge 1
  • 1USDA, ARS, Natural Products Utilization Research Unit, University of Mississippi, University, MS, 38677 USA
  • 2National Center for Natural Products Research School of Pharmacy, The University of Mississippi, University, MS 38677, USA
  • 3Department of Medicinal Chemistry, School of Pharmacy, The University of Mississippi, University, MS 38677, USA
  • 4USDA, ARS, Center for Medical, Agricultural, and Veterinary Entomology, Gainesville, FL, 32608 USA

There has been recent interest in research concerning the possible use of natural plant extracts for pest management as alternatives to synthetic agrochemicals that are safer for human health and the environment. In this respect, 23 common spices were evaluated for antifungal activity against three Colletotrichum species using direct-bioautography assays. Turmeric, nutmeg, ginger, clove, oregano, black paper, fennel and anise showed promising antifungal activity against C. acutatum, C. fragariae, and C. gloeosporioides. Antifungal activity was indicated by the presence of clear inhibitory zones appearing against a dark background of fungal growth on the TLC plate. These clear zones represented regions where fungal mycelia or reproductive stroma were not present. Through the Deployed War-Fighter Protection (DWFP) Research Program we have expanded our role in exploration and identification of new natural compounds for insecticidal and mosquito deterrent activity. The twenty-three plant extracts were also evaluated for mosquito larvacidal, adulticidal, and repellent activity against Aedes aegypti. Pest management results will be present in the poster.