Extraction and Quantification of DNA.—Fungal mycelium for DNA extraction was grown in 150 mL of Malt extract yeast extract broth and gyrated at 125 rpm for 4–6 d at 2862C. The mycelia were harvested by filtration through a double layer of cheese cloth and freeze dried under vacuum. Total genomic DNA was extracted as described by Lee and Taylor (1992), with some modifications. Approximately 200 gm of lyophilized mycelium was taken into 1.5 mL eppendorf tube, crushed with micro-pestle, mixed with 300 mL of lysis solution (50 mM Tris-HCl, pH 7.8, 50 mM Na2-EDTA, 3% SDS) to which 1% 2-mercaptoethanol was added freshly and in-cubated at 65 C for 4 h. Proteinase K (600 mgmL21)was added and further incubated at 35 C for 1 h. The extracted genomic DNA was purified by phenol-chloroform method and precipitated with ethanol. The pure quantified DNA samples were stored at 4 C for further use.
Identification and detection of Macrophomina phaseolina by using species-specific primers and probe. Available from: https://www.researchgate.net/publication/5517783_Identification_and_detection_of_Macrophomina_phaseolina_by_using_species-specific_primers_and_probe [accessed Sep 21, 2015].