• LEKHA K NAIR
• Dr.MALEEKA BEGUM
• Dr.RAGUNATHAN

In the present study, the potentiality of  Pleurotus platypus in degrading four different  azo dyes, namely methylene blue, methyl red, congo red, and orange –G , under optimum conditions were studied and the degraded sample was analyzed for its efficiency in plant growth. Kirk’s media was used for the degradation study and it was found out that the organism degraded the dye best in Kirk’s media on the fifth day of incubation under neutral pH at 40ºC. The decolourization of the dye was estimated by using UV-VIS spectrophotometer. TLC was performed to find out the Rƒ value of the degraded dyes. Azoreductase enzyme activity was also analyzed. Phytotoxic analysis of the treated dye was compared with the control. Germination count of green gram seeds with the treated dye sample is compared with the untreated dye and tap water. The phytotoxicity analysis of the green gram plants showed better results with the treated dye sample .Enzyme activity of the treated dye soil sample was compared with the enzyme activity of the soil with untreated dye. The results are very promising and confirms the potentiality of the white rot fungi, Pleurotus platypus in degrading azo dyes.

degradation, Kirk’s media, Rf value, Azo dyes, Dehydrogenase, Phosphatase and cellulase

"Biodegradation of azo dyes using Pleurotus Platypus and its phytotoxicity study", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.5, Issue 5, page no.116-125, MAY-2018, Available :http://www.jetir.org/papers/JETIR1805774.pdf

"Biodegradation of azo dyes using Pleurotus Platypus and its phytotoxicity study", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.5, Issue 5, page no. pp116-125, MAY-2018, Available at : http://www.jetir.org/papers/JETIR1805774.pdf