Distribution of endophytic Fungi in Tectona grandis Linn.F
Isolation and enumeration of endophytic fungi from leaf samples of Tectona grandis L.f was
carried out in Thanjavur District of Tamilnadu India.During the study period, a total of 140 fungi
were isolated from PDA medium and Different fungal species namely Alternaria
sp.,, Colletotrichum sp.,, Phomopsis sp., Penicillium sp.,, Schizophyllu sp.,, Xylariaceae Sp.,,
Schizophyllum Sp., Nigrospora sp., Fusarium sp.,
The Lower portion of leaf sample was most frequently colonized Penicillium sp, Schizophyllum
Sp., Fusarium sp., and Xylariaceae sp,, (15%),Followed by Alternaria sp, Colletotrichum
sp, and Phomopsis sp(13.5%), whereas Nigrospora sp., was found only in young
leaves.However,from the upper region was most frequently colonized by Alternaria sp
(10%)followed by Xylariaceae sp.,, , Colletotrichum sp, Phomopsis sp., (8.5%).%) and
Fusarium sp.,( 5.0%) and sterile mycelium(4.5%).
There was the significant Differenes in the type of colonization of fungus with reference to
reason and location.However,from the upper region was most frequently colonized by Alternaria
sp (10%)followed by Xylariaceae sp.,, , Colletotrichum sp,and Phomopsis sp., (8.5%).Whereas
at upper portion of leaf segment was mostly similar colonized by Alternaria sp(15%),
Colletotrichum sp,and Phomopsis sp.,Fusarium sp., (13.5%).It was noticed in general, that the
colonization frequency of some of those fungi, Alternaria sp,Schizophyllum sp, Xylariaceae sp,
and sterile mycelium was little higher percentage in lower portion of the leaf.
The findings in the present study is also agreement with finding of Bills (1996).who reported
large number of fungal species isolated as entophytes from the leaves of this plant sp. The study
of entophytic fungus in Ticino grandis suggests that there is a need of larger survey in relation to
various seasons to study the diversity existing in this species and their seasonal variability on
endophytes colonization. They showed colonization frequency was greater during rainy season
than summer and winter.
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