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An efficient transformation method for tannin-containing sorghum.

Yuan Liang1, Xuehui Yan1, Jingyi Xu1

  • 1College of Agricultural, Anhui Science and Technology University, Fengyang, Anhui, China.

Peerj
|March 20, 2023
PubMed
Summary
This summary is machine-generated.

This study developed an efficient microprojectile transformation system for Hongyingzi, a tannin-rich sorghum cultivar. This breakthrough overcomes tannin-related restrictions, enabling successful genetic modification and inheritance in this important brewing crop.

Keywords:
Genetic transformationParticle bombardmentTannin-containing sorghumTissue cultureTransgenic plants

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Area of Science:

  • Plant Biotechnology
  • Sorghum Genetics
  • Genetic Transformation

Background:

  • Tannins significantly inhibit plant genetic transformation efficiency.
  • Hongyingzi is a specific sorghum cultivar utilized in brewing, characterized by its tannin content.

Purpose of the Study:

  • To establish an efficient microprojectile transformation system for tannin-containing sorghum (Hongyingzi).
  • To overcome the limitations imposed by tannins on plant transformation.

Main Methods:

  • Utilized immature embryos (IEs) of Hongyingzi as explants.
  • Optimized geneticin (G418) concentration and tissue culture conditions.
  • Employed microprojectile bombardment for gene delivery.

Main Results:

  • Identified Type II calli as optimal explants for transformation.
  • Achieved an average transformation frequency of 27% after optimization.
  • Confirmed transgene presence, expression, and stable inheritance in subsequent generations.

Conclusions:

  • Successfully established an efficient transformation system for tannin-rich sorghum.
  • Demonstrated the feasibility of overcoming tannin-mediated restrictions in plant genetic engineering.
  • Paved the way for genetic improvement of tannin-containing sorghum cultivars.