Medicinal herb extracts inhibit growth of<Emphasis Type="Italic">Rhabditis elongate</Emphasis> (Nematoda:<Emphasis Type="Italic">Rhabditidae</Emphasis>) |
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Authors: | Seo?Ho?Lee Hyun?Soo?Lee Shin?Young?Lee Sung?Jin?Hwang Baek?Hwang Jae?Heun?Kim Email author" target="_blank">Hyeon?Yong?LeeEmail author |
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Institution: | (1) School of Biotechnology and Bioengineering, Kangwon National University, 200-701 Chunchon, Korea;(2) Department of Food and Biotechnology, Institute of Food and Biotechnology, Dongshin University, 520-714 Naju, Korea;(3) Department of Biology, Chonnam University, 500-850 Kwangju, Korea;(4) Forest Research Institute, 200-104 Seoul, Korea |
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Abstract: | We tested the influence of extracts from three medicinal herbs —Salvia miltiorrhiza, Schizandra chinensis, andEugenia caryophyllata — on activity of the nematodeRhabditis elongate. Treatment with f.caryophyllata was most useful, causing the greatest decrease in populations and mobility, but did not have any detrimental effect on the
initial growth of the host microorganism,Escherichia coli. For example, when 0.5 g/L of the extract was added to an inoculated liquid culture, we counted 710 nematodes/mL, with a multiplication
rate 5 times greater than the initial population. This was in contrast to the control sample, which had a count of 1100 nematodes/mL
and a growth ratio of 11. For our field test, nematode mobility in the presence of the extract also decreased, to 6.8 mm/day,
compared with 20 mm/day for the control. Likewise, when 1.0 g/L of the extract was added to the soil, the total number of
nematodes was reduced to only 30- to 40% of the control population. |
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Keywords: | Eugenia caryophyllata medicinal herbs nematocide Rhabditis elongata |
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