TY  - JOUR
AU  - Pompimon, Wilart 
AU  - Jomduang, Jinnantina 
AU  - Prawat, Uma 
AU  - Mankhetkorn, Samlee 
PY  - 2009
TI  - Anti-Phytopthora capsici Activities and Potential Use as Antifungal in Agriculture of Alpinia galanga Swartz, Curcuma longa Linn, Boesenbergia pandurata Schut and Chromolaena odorata: Bioactivities Guided Isolation of Active Ingredients
JF  - American Journal of Agricultural and Biological Sciences
VL  - 4
IS  - 1
DO  - 10.3844/ajabssp.2009.83.91
UR  - https://thescipub.com/abstract/ajabssp.2009.83.91
AB  - Problem statement: Plant derived fungicides are now being subjects 
of many research groups. These secondary metabolites have enormous potential to 
inspire and influence modern agrochemical research. The study aimed to investigate 
the antifungal activity and their potential use as fungicides in the agriculture 
of crude extracts and purified compounds derived from plants used in traditional 
medicines. Approach: Four medicinal plants including A. galanga, 
C. longa, B. pandurata and C. odorata were selected and percolated with hexane, 
ethyl acetate, acetone or methanol. The extracts were purified and elucidated 
their chemical structures. Disc mycelial growth inhibition was applied in order 
to determine their anti P. capsici activity and the field study was performed 
to determine their potential use in controlling fungal infection in chili plants 
compared with commercial fungicides such as captan and bio-control Trichoderma 
virens. Results: All crude extract inhibited mycelial growth 
of the fungus performed with similar efficacy. ED90 was equal to 300 ppm. Among 
plants studied B. pandurata was the most potent against P. capsici. The proposed 
active ingredients were pinostrobin and pinocembrin. In the field study, pinocembrin 
mediated the same anti P. capsici activity as captan. B. pandurata can protect 
chili from infection, thus increasing crop yield of chili comparable to Trichoderma 
virens. Conclusion: The results clearly showed that the extracts 
of the four plants studied could be considered as potential sources of novel fungicides. 
Particularly, B. pandurata has a very high potential as raw material for developing 
the antifungal molecule of non-petrochemical, naturally eco-friendly, easily obtainable 
and not toxic to human beings and environment, at least for use in chili growing.