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Use of phylloplane fungi
as biocontrol agent against Colletotrichum leaf
disease of rubber (Hevea brasiliensis Muell.
Arg.)
Evueh, G. A. and Ogbebor, N. O.*
Plant
Protection Division, Rubber Research Institute of Nigeria,
PMB 1049, Benin City.
*Corresponding author. E-mail:
ogbeb06@yahoo.com.
Accepted
4 March, 2008 |
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Phylloplane fungi were used as biocontrol agent against
Colletotrichum leaf disease of rubber (Hevea
brasiliensis Muell. Arg.). Aspergillus sp. lysed
the cytoplasm of Colletotrichum gloeosporioides on
Potato Dextrose Agar. Trichophyton sp. and
Gliocladium sp. antagonised C. gloeosporioides by
overgrowing on it. Other phylloplanes used in this study
such as Botrytis sp., Pleurothecium sp. and
Staphylotrichum sp. exhibited weak antagonism on the
pathogen while Gonatorrhodiella sp. and
Syncephalastrum sp. showed different levels of zones of
inhibition with the pathogen. Metabolites produced by
Gonatorrhodiella sp. and Syncephalastrum sp.
affected the pathogen by antibiosis. This finding showed
that Trichocladium sp. and Trichophyton
sp. exhibited the highest antagonistic effects on C.
gloeosporioides.
Key
words:
Para rubber, phylloplane fungi, biological control, disease
management. |
