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Pineapple [Ananas comosus (L.) Merr].

Gaurab Gangopadhyay1, Kalyan K Mukherjee

  • 1Division of Plant Biology, Bose Institute, 93/1 APC Road, Kolkata, 700 009, India, gaurab@jcbose.ac.in.

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Researchers improved Agrobacterium-mediated pineapple transformation, achieving over 20% transgenic micro-shoots. This novel method uses encapsulation and antibiotic selection for efficient gene introgression in pineapple (Ananas comosus).

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Area of Science:

  • Plant Biotechnology
  • Agricultural Science
  • Molecular Biology

Background:

  • Agrobacterium-mediated transformation is crucial for crop improvement.
  • Enhancing pineapple (Ananas comosus) genetic modification efficiency is vital for crop development.
  • Existing pineapple transformation protocols often face limitations in efficiency and applicability.

Purpose of the Study:

  • To optimize the Agrobacterium-mediated transformation protocol for pineapple.
  • To develop a novel encapsulation-based antibiotic selection procedure.
  • To improve the regeneration rate of transgenic pineapple micro-shoots.

Main Methods:

  • Utilized Agrobacterium-mediated transformation with the pCAMBIA1304 vector.
  • Employed a novel encapsulation-based technique for selection.
  • Applied an antibiotic selection procedure to callus explants.
  • Focused on the 'Queen' variety of Indian pineapple (Ananas comosus).

Main Results:

  • Achieved a mean percentage of 20.6% for transgenic micro-shoots regenerated from initial callus explants.
  • Successfully demonstrated improved efficacy of the transformation technique.
  • Developed a detailed and reproducible protocol.

Conclusions:

  • The novel encapsulation-based antibiotic selection significantly enhances pineapple transformation efficiency.
  • The developed protocol is applicable to the 'Queen' pineapple variety and potentially other pineapple varieties.
  • This advancement facilitates the introgression of target genes in pineapple for crop improvement.