Genetic transfer of nitrogen-fixing filamentous cyanobacterium

Laboratory of Microbial and Molecular Genetics, Department of Botany, University of Delhi, Delhi 110007, India ABSTRACT SUMMARY: Genetic transfer has been studied between wild-type Nostoc muscorum and a multiply marked mutant strain. Experiments conducted with heat-killed donor and live recipient cells indicated that the transfer occurred in both directions and may have been the result of transformation rather than conjugation. This conclusion was supported by the sensitivity of the process to DNAase. There was some indication of linkage between het and eth . Present address: Laboratory of Microbial Genetics and Biochemistry, Department of Botany, Kurukshetra University, Kurukshetra 132119, India.