Abstract
Agrobacterium tumefaciens strain EHA105 carrying a binary vector pCAMBIA2301, which contains a neomycin phosphotransferase gene (nptII) and a β-glucuronidase (GUS) gene (uidA) interrupted with an intron, was used for transformation of Vigna mungo cotyledonary node explants. Various factors such as preculture and wounding of explants, manipulations in inoculation and co-cultivation conditions were found to play a significant role in influencing tissue competence, Agrobacterium virulence and compatibility of both, for achieving the maximum transformation frequencies. The stable transformation with 4.31 % efficiency was achieved using the optimized conditions. The transformed green shoots that were selected and rooted on medium containing kanamycin and tested positive for nptII gene by polymerase chain reaction were established in soil to collect seeds. GUS activity was detected in leaves, roots, pollen grains and T1 seedlings. Southern analysis of T0 plants showed the integration of nptII into the plant genome.
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Abbreviations
- BAP:
-
6-benzylaminopurine
- CTAB:
-
cetyl trimethyl ammonium bromide
- IBA:
-
indole-3-butyric acid
- RM:
-
rooting medium
- SR:
-
shoot regeneration medium
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Saini, R., Jaiwal, P.K. Agrobacterium tumefaciens-mediated transformation of blackgram: An assessment of factors influencing the efficiency of uidA gene transfer. Biol Plant 51, 69–74 (2007). https://doi.org/10.1007/s10535-007-0014-z
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DOI: https://doi.org/10.1007/s10535-007-0014-z