## Abstract __Actinomyces__ species I and II (tentatively identified awaiting confirmation) and __Trichoderma harzianum__ were isolated from soils grown to cassava plants. The __Actinomyces__ species inhibited the growth of five plant pathogenic fungi at a distance whereas __T. harzianum__ was an a
Inhibition of growth of some plant pathogens by antagonistic microorganisms
โ Scribed by C. Omoifo; Dr. T. Ikotun
- Publisher
- John Wiley and Sons
- Year
- 1987
- Tongue
- English
- Weight
- 424 KB
- Volume
- 27
- Category
- Article
- ISSN
- 0233-111X
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โฆ Synopsis
Four known antagonistic microorganisms, namely, Bacillus cereus, Bacillus subtilis, Aspergillus ochraceus and Penicillium cyclopium were paired against four pathogens of maize, namely, Curvularia pallescens, Drechslera maydis, Fusarium moniliforme and Macrophomina phaseoli and a pathogen of cassava, Colletotrichum gloeosporioides f. sp. munihotie on potato dextrose agar. The main aim was to test the ability of the antagonists to inhibit the growth of the pathogens. Whereas B. cereus and B . subtilis inhibited the growth of C . pallescens, D. maydis, M . phaseoli and C . gloeosporioides f. sp. manihotis, they did not inhibit the growth of F. moniliforme. A . ochraceus and P . cyclopium were effective only against dl. phaseoli. Inhibitory activity on the target organisms are thought to be due to some toxic substances produced by the antagonists.
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