Corn Transformation via Elevated Temperature Selection
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Solution Overview
Problem
Current plant transformation systems face inefficiencies in production and transformation variability due to genotype or species diversity, particularly in high-capacity production of economically important plants like elite corn cultivars.
Innovation Solution
A method for stable and efficient transformation of corn plants using a biotechnological process involving nucleic acid sequences with selectable markers, elevated temperature selection, and minimized Agrobacterium exposure, allowing for rapid identification and regeneration of fertile transgenic plants.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If conventional transformation methods are used, then transformation can be achieved, but production efficiency is low and transformation variability is high
Solution Approach 1:
The patent applies parameter changes by optimizing multiple transformation parameters simultaneously: selecting specific corn developmental stages (10-14 days post-pollination), controlling Agrobacterium culture conditions (OD600 0.4-0.6, specific temperature ranges), adjusting co-culture time (24-48 hours), and selecting appropriate selectable markers. This systematic parameter optimization resolves the contradiction by making transformation efficiency high and variability low through precise control of transformation conditions.
2Productivity
If Agrobacterium exposure time is extended, then transformation efficiency may improve, but production time increases
Solution Approach 1:
The patent applies preliminary action by pre-selecting optimal corn developmental stages (10-14 days post-pollination) before transformation, pre-culturing Agrobacterium to specific OD600 ranges, and pre-determining co-culture durations. These preliminary optimizations enable high transformation efficiency to be achieved within compressed timeframes (2-4 weeks total selection time), resolving the contradiction between efficiency and time loss.
3Manufacturing precision
If multiple subculturing steps are performed, then transformation quality may improve, but process complexity increases
Solution Approach 1:
The patent applies merging by combining multiple transformation and selection steps into a streamlined process. The method integrates co-culture, selection, and regeneration into a continuous 2-4 week process using optimized media formulations and maintained selection pressure, eliminating the need for multiple separate subculturing steps while maintaining high transformation quality.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This method significantly increases transformation efficiency, reduces the time required for selection, and eliminates the need for repeated subculturing, resulting in higher yields of fertile transgenic corn plants.
Implementation Method 1
a nucleic acid sequence containing at least one genetic component containing a selectable marker nucleic acid that provides a means for selecting corn tissue containing the genetic component from those not containing the genetic component
Implementation Method 2
subjecting the transformed corn tissue to tissue culture media containing a selection agent corresponding to the selectable marker nucleic acid at an elevated temperature for a period of time sufficient to identify and select transformed plants
Data Source
AI summary
The present invention relates to a novel transformation system for generating transformed corn plants. In particular, the invention relates to a rapid selection system at an elevated temperature that allows faster and more efficient transformation.