1. Plant Biochemistry Laboratory, Department of Botany, University of North Bengal , Raja Rammohunpur, Dist. Darjeeling, West Bengal 734013, India
2. Department of Botany, University of Delhi , Delhi 110007, India
3. Microbiology Laboratory, Department of Botany, University of North Bengal , Raja Rammohunpur, Dist. Darjeeling, West Bengal 734013, India