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The two mushroom verities Pleurotus florida and P. sapidus was grown on two different substrates i.e.
paddy and wheat straw. In this study it was observed that lingolytic enzyme LiP was appeared very less
in both substrates with both the species during active colonization and primordia initiation on 6th day
while highest recorded in each substrate with both species at the end 18th day.
MnP was found in higher concentration in compression to LiP. Highest Laccase activity with P. florida
was found 8.2 U/ml with both the substrate. During early stage of spawn run cellulose degradation was
found faster and maximum during 1st harvest along with elevated level of lignolytic enzymes indicated
that fructification required more energy for its higher metabolic rate which was served by fungal enzyme
attack. Laccase activities expression level was found higher at spawn run primordial initiation and was
responsible for physical barrier of lignin so that more cellulosic and hemicellulosic content was exposed
for further enzyme attack leading to extraction of energy for the growth of mushroom. The result obtained
in the study is discussed in this paper.
Keywords: Paddy straw, Wheat straw, Lignine, Laccase and Cellulose.