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Turf Grasses.

Chip Longo1, Colin Lickwar, Qian Hu

  • 1HybriGene Inc., West Kingston, RI, USA.

Methods in Molecular Biology (Clifton, N.J.)
|October 13, 2006
PubMed
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A new Agrobacterium tumefaciens protocol efficiently creates genetically transformed turfgrass. This method enables stable transgene integration and expression in elite bentgrass and tall fescue varieties.

Area of Science:

  • Plant Biotechnology
  • Molecular Biology
  • Agronomy

Background:

  • Developing efficient genetic transformation methods is crucial for improving turfgrass traits.
  • Existing protocols often lack efficiency or broad applicability across elite cultivars.

Purpose of the Study:

  • To establish a reliable and efficient Agrobacterium tumefaciens-mediated genetic transformation protocol for turfgrass.
  • To demonstrate the protocol's efficacy across multiple elite bentgrass cultivars and a tall fescue variety.

Main Methods:

  • Initiation and maintenance of embryogenic callus from mature turfgrass seeds.
  • Agrobacterium tumefaciens (strain LBA4404) mediated transformation using herbicide (bar) or antibiotic (hyg) resistance genes.
  • Regeneration of transgenic plants and confirmation of transgene integration and expression via Southern blot and genetic analysis.

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Main Results:

  • Achieved stable transformation efficiencies up to 43.3% in turfgrass.
  • Confirmed stable transgene integration and normal transmission to the T1 generation.
  • Successfully transformed five elite bentgrass cultivars and one elite tall fescue variety using a single tissue culture regime with minor modifications.

Conclusions:

  • The developed protocol is a general and efficient method for Agrobacterium tumefaciens-mediated transformation of elite turfgrass cultivars.
  • This advancement facilitates the genetic improvement of important turfgrass species.