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| Web URL(s): | http://apsjournals.apsnet.org/doi/pdfplus/10.1094/PHYTO.2001.91.3.301
Last checked: 08/25/2010
Requires: PDF Reader |
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| Publication Type:
| Refereed |
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| Author(s): | Bae, Yeoung-Seuk;
Knudsen, Guy R. |
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| Author Affiliation: | Soil Science Division, University of Idaho, Moscow, ID |
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| Title: | Influence of a fungus-feeding nematode on growth and biocontrol efficacy of Trichoderma harzianum |
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| Section: | Biological control
Other records with the "Biological control" Section
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| Source: | Phytopathology. Vol. 91, No. 3, March 2001, p. 301-306. |
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| Publishing Information: | St. Paul, MN: American Phytopathological Society |
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| # of Pages: | 6 |
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| Keywords: | TIC Keywords: Nematoda; Growth; Biological control; Trichoderma harzianum; Interactions; Soil biology; Soil microorganisms; Population dynamics; Fungi; Biological fungicides; Sclerotinia; Disease control
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| Abstract/Contents: | "A fungivorous nematode, Aphelenchoides sp., was isolated from field soil by baiting with mycelium of the biocontrol fungus Trichoderma harzianum ThzID1, and subsequently was maintained on agar cultures of the fungus. Interactions between the nematode and the green flourescent protein-producing transformant, T. harzianum ThzID1-M3, were investigated in both heat-treated (80°, 30 min) and untreated field soil. ThzIDI-M3 was identified in soil by epifluorescence microscopy. When ThzID1-M3 was added to soil as an alginate pellet formulation, addition of the nematode (10 per gram of soil) significantly reduced radial growth and recoverable populations of the fungus, and the effect was greater in heat-treated soil than in untreated soil. Addition of the ThzID1-M3 to soil pretreated with the nematode (10 per gram of soil) stimulated nematode population growth for approximately 10 to 20 days, whereas nematode populations decreased in the absence of added Trichoderma sp. When sclerotia of Sclerotinia sclerotiorum were added to soil (10 per 200 g of soil) with ThzID1-M3 (40 pellets per 200 g of soil), addition of Aphelenchoides sp. (2,000 per 200 g of soil) reduced the number of sclerotia colonized by ThzID1-M3. These results suggest that fungivorous nematode may be a significant biotic constrant on activity of biocontrol fungi in the field." |
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| Language: | English |
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| References: | 30 |
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| Note: | Graphs |
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Bae, Y.-S., and G. R. Knudsen. 2001. Influence of a fungus-feeding nematode on growth and biocontrol efficacy of Trichoderma harzianum. Phytopathology. 91(3):p. 301-306. |
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| Web URL(s):
http://apsjournals.apsnet.org/doi/pdfplus/10.1094/PHYTO.2001.91.3.301
Last checked: 08/25/2010
Requires: PDF Reader |
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MSU catalog number: SB 599 .P48 |
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