High-Efficiency Transformation of Rhizobium leguminosarum by Electroporation
AUTOR(ES)
Garg, Bindu
FONTE
American Society for Microbiology
RESUMO
Electrotransformation of Rhizobium leguminosarum was successfully carried out with a 15.1-kb plasmid, pMP154 (Cmr), containing a nodABC-lacZ fusion by electroporation. The maximum transformation efficiency, 108 transformants/μg of DNA, was achieved at a field strength of 14 kV/cm with a pulse of 7.3 ms (186 Ω). The number of transformants was found to increase with increasing cell density, with no sign of saturation. In relation to DNA dosage, the maximum transformation efficiency (5.8 × 108 transformants/μg of DNA) was obtained with 0.5 μg of DNA/ml of cell suspension, and a further increase in the DNA concentration resulted in a decline in transformation efficiency.
ACESSO AO ARTIGO
http://www.pubmedcentral.nih.gov/articlerender.fcgi?artid=91420Documentos Relacionados
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