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Physiology and Molecular Biology of Plants

, Volume 18, Issue 4, pp 357–364 | Cite as

An improved plant regeneration and Agrobacterium - mediated transformation of red pepper (Capsicum annuum L.)

  • R. Vinoth Kumar
  • V. K. Sharma
  • B. Chattopadhyay
  • S. Chakraborty
Research Article

Abstract

Capsicum annuum (red pepper) is an important spice cum vegetable crop in tropical and subtropical countries. Here, we report an effective and reproducible auxin free regeneration method for six different red pepper cultivars (ACA-10, Kashi Anmol, LCA-235, PBC-535, Pusa Jwala and Supper) using hypocotyl explants and an efficient Agrobacterium-mediated transformation protocol. The explants (hypocotyls, cotyledonary leaves and leaf discs) collected from axenic seedlings of six red pepper cultivars were cultured on either hormone free MS medium or MS medium supplemented with BAP alone or in combination with IAA. Inclusion of IAA in the regeneration medium resulted in callus formation at the cut ends of explants, formation of rosette leaves and ill defined shoot buds. Regeneration of shoot buds could be achieved from hypocotyls grown in MS medium supplemented with different concentrations of BAP unlike other explants which failed to respond. Incorporation of GA3 in shoot elongation medium at 0.5 mg/l concentration enhanced the elongation in two cultivars, LCA-235 and Supper, while other cultivars showed no significant response. Chilli cultivar, Pusa Jwala was transformed with βC1 ORF of satellite DNA β molecule associated with Chilli leaf curl Joydebpur virus through Agrobacterium tumefaciens. Transgene integration in putative transformants was confirmed by PCR and Southern hybridization analysis.

Keywords

Capsicum annuum Plant regeneration Agrobacterium tumefaciens Genetic transformation Transgenic plants Chilli leaf curl virus 

Notes

Acknowledgements

The research work was financially supported by the Department of Biotechnology, Government of India, New Delhi. VKS gratefully acknowledge Council of Scientific and Industrial Research for providing fellowship.

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Copyright information

© Prof. H.S. Srivastava Foundation for Science and Society 2012

Authors and Affiliations

  • R. Vinoth Kumar
    • 1
  • V. K. Sharma
    • 1
  • B. Chattopadhyay
    • 1
  • S. Chakraborty
    • 1
  1. 1.School of Life SciencesJawaharlal Nehru UniversityNew DelhiIndia

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