Degradation ability
of wood decay fungi in teak (Tectona grandis L.) wood under storage
condition
A. Sudha1*,
G. Thiribhuvanamala2 and S. Rajamanickam3
Department of Plant Pathology, Tamil Nadu
Agricultural University, Coimbatore-641 003, India
*Corresponding Author Email : sudhaa1981@gmail.com
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Abstract
Aim:
The present study was undertaken to provide basic knowledge about the teak
woody biomass degradation ability of wood decay fungi.
Methodology: Wood decay fungi was isolated from the decayed wood
samples collected from teak wood logs. The weight loss of teak wood and
moisture content were assessed under in-vitro condition by incubating the
teak wood block with the isolated fungi. Further, the secretion of
ligninolytic enzymes viz., laccase, lignin peroxidise (LiP) and manganese
peroxidase (MnP) produced by wood decay fungi were assessed to understand
their degrading ability.
Results:
Wood decay fungi namely, Daldinia concentrica, Ganoderma lucidum, Lenzites
betulina, Ganoderma tsugae, Trametes versicolor and Schizophyllum
commune, were isolated from teak wood logs as pure culture and were used
for studying their degrading ability. Higher degrading percentage of 10.50
and 12.0 was recorded with L. betulina and T. versicolor
inoculated wood blocks on 60th day of incubation. Similarly, the
maximum moisture content of 54.45 and 50.00 percent was recorded with L.
betulina and T. versicolor at 60th day of incubation in teak wood
blocks. Supporting these results, L. betulina showed increased
secretion of laccase, LiP and MnP enzyme activity to the level of 0.60, 0.056
and 0.26U ml-1, respectively.
Interpretation: The results of the present study gives
an understanding on the degrading ability of wood decay fungi which can be
used to devise integrated management practices to minimise the losses under
storage.
Key words: Ligninolytic enzyme activity, Teak wood, Tectona
grandis, White-rot fungi
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