Efficient transformation and regeneration of rice small cell groups

Area of Science:

• Plant Biotechnology
• Molecular Biology
• Genetics

Background:

• Traditional plant transformation methods, such as protoplast regeneration, can be complex and inefficient.
• Developing simpler and faster methods for generating transgenic plants is crucial for crop improvement.

Purpose of the Study:

• To develop a simpler, faster, and more efficient method for regenerating transgenic rice plants.
• To assess the efficiency and applicability of the new transformation and regeneration technique.

Main Methods:

• Small cell groups (50-100 cells) were isolated from established rice suspension cultures.
• Transformation was achieved using polyethylene glycol-mediated delivery of a plasmid containing the beta-glucuronidase gene into intact cells.
• Regeneration of transgenic plants from transformed calli was performed.

Main Results:

• A transformation frequency of approximately 7% was achieved using the new method.
• Beta-glucuronidase activity was successfully detected in the roots and leaves of regenerated plants.
• Integration of one to two copies of the transgene into the rice chromosomal DNA was confirmed.

Conclusions:

• The developed method provides a simpler, faster, and more efficient approach for generating transgenic rice plants.
• This technique is broadly applicable to both dicotyledonous and monocotyledonous plants, particularly those recalcitrant to protoplast regeneration.
• This advancement facilitates genetic engineering in a wider range of plant species.