Determination of the Allelopathic Potential of Cambodia’s Medicinal Plants Using the Dish Pack Method

Yourk Sothearith, Kwame Sarpong Appiah, Hossein Mardani, Takashi Motobayashi, Suzuki Yoko, Khou Eang Hourt, Akifumi Sugiyama and Yoshiharu Fujii
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Yourk Sothearith: Department of International Environmental and Agricultural Science, Tokyo University of Agriculture and Technology, 3-5-8, Saiwai-cho, Fuchu, Tokyo 183-8509, Japan
Kwame Sarpong Appiah: Department of International Environmental and Agricultural Science, Tokyo University of Agriculture and Technology, 3-5-8, Saiwai-cho, Fuchu, Tokyo 183-8509, Japan
Hossein Mardani: Department of International Environmental and Agricultural Science, Tokyo University of Agriculture and Technology, 3-5-8, Saiwai-cho, Fuchu, Tokyo 183-8509, Japan
Takashi Motobayashi: Department of International Environmental and Agricultural Science, Tokyo University of Agriculture and Technology, 3-5-8, Saiwai-cho, Fuchu, Tokyo 183-8509, Japan
Suzuki Yoko: Aromatic Repos, AHOLA, A2 Soleil Jiyugaoka, 1-21-3, Jiyugaoka, Meguro, Tokyo 152-0035, Japan
Khou Eang Hourt: National Authority for Preah Vihear, Thomacheat Samdech Techo Hun Sen Village, Sraem Commune, Choam Khsant District, Cheom Ksan 13407, Preah Vihear, Cambodia
Akifumi Sugiyama: Research Institute for Sustainable Humanosphere (RISH), Kyoto University, Uji, Kyoto 611-0011, Japan
Yoshiharu Fujii: Department of International Environmental and Agricultural Science, Tokyo University of Agriculture and Technology, 3-5-8, Saiwai-cho, Fuchu, Tokyo 183-8509, Japan

Sustainability, 2021, vol. 13, issue 16, 1-10

Abstract: Plants produce several chemically diverse bioactive substances that may influence the growth and development of other organisms when released into the environment in a phenomenon called allelopathy. Several of these allelopathic species also have reported medicinal properties. In this study, the potential allelopathic effects of more than a hundred medicinal plants from Cambodia were tested using the dish pack method. The dish pack bioassay method specifically targets volatile allelochemicals. Twenty-five species were found to have significant inhibitory effects on lettuce radicle growth. Eleven different plant families, including Iridaceae (2), Apocynaceae (2), Poaceae (2), Sapindaceae, Araceae, Combretaceae, Orchidaceae, Clusiaceae, Zingiberaceae, Rutaceae and Asparagaceae had the plant species with high inhibitory effects. Allophyllus serrulatus had the highest growth inhibitory effect on lettuce radicles more than 60%, followed by Alocasia macrorrhiza, Iris pallida , Terminalia triptera , Wrightia tomentosa , Cymbidium aloifolium , Garcinia villersiana and Kaempferia parviflora . The candidate species were subjected to further studies to identify the volatile allelochemicals in the volatile constituents.

Keywords: allelopathy; allelochemicals; volatile compounds; dish pack method (search for similar items in EconPapers)
JEL-codes: O13 Q Q0 Q2 Q3 Q5 Q56 (search for similar items in EconPapers)
Date: 2021
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