Genomic DNA of all the isolates of endophytic fungi was
extracted using Nucleopore gDNA Fungal Bacterial Mini
Kit (Genetix, India) as per the manufacturer’s instructions.
For extraction of genomic DNA, each fungal isolate was
grown on Potato Dextrose Broth which is a liquid medium
and genomic DNA was isolated from the harvested mycelium.
For amplification of ITS-rDNA, the whole genomic DNA was
amplified in a thermocycler (Gen Amp 9700, Applied Biosystem,
US) using primer pair ITS1 (TCCGTAGGTGAACCT
GCGG) and ITS4 (TCCTCCGCTTATTGATATGC) [53]
which allow to amplify the ITS region of the fungal species.
The conditions for Polymerase Chain Reaction for ITSrDNA
amplification was 95 C for 5 min, 35 cycles of 94 C
for 45 s, 60 C for 30 s, 72 C for 45 s and final 72 C for
5 min. The product size was approximately 575 bp which was
visible in 1.2% agarose gel under UV light. The PCR product
of each isolate was purified using PCR purification kit (Fermentas,
Lithuania) as per the provided protocol. Sequencing
of the PCR product was done by a Sanger’s Dideoxy method
on applied Biosystem 3730XL (Bioloink, New Delhi, India).
The sequence of each isolate was subjected to BLAST search
(http://wwwncbinlmgov/BLAST) with NCBI database [1].
All the sequences were aligned with representative sequences
in the NCBI database using CLUSTAL W [48] and employing
MEGA 52 software, the phylogenetic analysis of the alignment
was performed with Maximum Likelihood Method.
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