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Strawberry (Fragaria × ananassa).

Roberto Cappelletti1, Silvia Sabbadini, Bruno Mezzetti

  • 1Department of Agriculture, Food and Environmental Sciences, Università Politecnica delle Marche, 60100, Ancona, Italy.

Methods in Molecular Biology (Clifton, N.J.)
|November 23, 2014
PubMed
Summary
This summary is machine-generated.

This study details a refined Agrobacterium-mediated genetic transformation protocol for strawberry (Fragaria spp.). The optimized method enhances regeneration and selection efficiency in key genotypes, facilitating the development of transgenic strawberry plants.

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Area of Science:

  • Plant Biotechnology
  • Genetics
  • Horticulture

Background:

  • Agrobacterium-mediated transformation is a key tool for strawberry (Fragaria spp.) genetic improvement.
  • Efficient regeneration and selection of transformed shoots are critical challenges in strawberry transformation, often being genotype-dependent.
  • Previous efforts have shown varying success rates across different strawberry cultivars.

Purpose of the Study:

  • To describe a refined protocol for Agrobacterium-mediated genetic transformation in strawberry.
  • To present a method optimized for high regeneration and transformation efficiency in specific strawberry genotypes.
  • To detail the steps for successful transformation, including infection, coculture, selection, and identification of transgenic lines.

Main Methods:

  • Utilized Agrobacterium-mediated transformation on leaf explants from in vitro proliferated shoots.
  • Employed a refined protocol involving specific infection, coculture, and selection procedures.
  • Focused on three distinct genotypes: two octoploid Fragaria × ananassa cultivars (Sveva, Calypso) and one diploid F. vesca cultivar (Alpina W.O.).
  • Applied kanamycin selection for identifying and proliferating putative transgenic shoots.

Main Results:

  • The described protocol demonstrated high regeneration and transformation efficiency in the selected strawberry genotypes.
  • Successfully identified and selected transgenic lines capable of proliferation and rooting on kanamycin.
  • The protocol's effectiveness is highlighted across both octoploid and diploid strawberry varieties.

Conclusions:

  • The developed protocol offers an efficient approach for genetic transformation in specific strawberry genotypes.
  • This method addresses the genotype-dependent challenges in strawberry regeneration and transformation.
  • The findings contribute to advancing genetic engineering capabilities in strawberry breeding programs.