Liquid Selection Medium for Cannabis Transformation
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Solution Overview
Problem
Current methods for genetically transforming Cannabis plants are inefficient, characterized by low transgenic plant regeneration rates and labor-intensive processes, leading to restricted introduction of desirable traits such as disease resistance and cannabinoid production.
Innovation Solution
A method involving excising Cannabis explants from seeds, introducing exogenous nucleic acid, and culturing them on a liquid selection medium to select for transformed explants, which results in higher transformation frequencies and reduced manual labor, enabling the production of greenhouse-ready plants in less time.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If conventional solid medium methods are used for Cannabis transformation, then transgenic plant regeneration can be achieved, but the transformation frequency is low and the process is labor-intensive
Solution Approach 1:
The patent changes the physical state of the culture medium from solid to liquid, which fundamentally alters the interaction between explants and medium. This parameter change enables automated liquid handling, reduces manual manipulation, and increases transformation frequency by improving nutrient and selection agent distribution throughout the culture system.
Solution Approach 2:
The patent replaces manual mechanical operations (explant manipulation, medium changes, selection monitoring) with automated liquid handling systems. This substitution eliminates labor-intensive steps while maintaining or improving transformation efficiency through precise, consistent delivery of nutrients and selection agents.
2Loss of time
If conventional transformation methods are used, then transgenic plants can be produced, but the time required to produce greenhouse-ready plants is extended
Solution Approach 1:
The liquid medium system enables continuous monitoring and maintenance of transformed explants without the discontinuous transfers required by solid medium methods. Explants remain in optimal culture conditions throughout the selection process, eliminating time losses associated with manual transfers and medium changes, thereby accelerating the production of greenhouse-ready plants.
3Extent of automation
If manual manipulation methods are used, then transformation can be performed, but the process requires extensive manual labor and is difficult to automate
Solution Approach 1:
The patent utilizes liquid medium culture, which is inherently compatible with hydraulic and pneumatic automation systems. Liquid handling robots, peristaltic pumps, and automated dispensing systems can precisely deliver medium, selection agents, and nutrients to explants, enabling full automation of the transformation process while eliminating manual manipulation steps.
Data Source
AI summary
The present invention provides efficient methods for transforming plant explants with an exogenous nucleic acid by culturing the explant with the exogenous nucleic acid on a liquid selection medium to select for a transformed explant. Transformed Cannabis or other plant explants are also provided. Plants and seeds produced by the methods are also provided and includes production of T1 plants.