National Facility for Blue-Green Algal Collections, Indian Agricultural Research Institute, New Delhi-110 012, India
*Present Address: Department of Microbiology, RLA College, University of Delhi, South Campus, New Delhi 110 021
**School of Biological Sciences, Madurai Kamaraj University, Madurai 625 021
The distribution of plasmids was studied In 15 different heterocystous cyanobacteria using agarose gel electrophoresis. Out of these, six were found to possess only one plasmid DNA of size ranging from 30–33 mD. A simplified and less time consuming protocol for studying the plasmids has been suggested.
Cyanobacteria, qel-electrophoresis, plasmid
