Low Density Conifer Somatic Embryo Dispersion
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Solution Overview
Problem
Current methods for somatic cloning of conifer embryos face challenges in efficiently and cost-effectively forming viable somatic embryos capable of germinating into plants, with existing methods often resulting in lower yields and suboptimal embryo formation.
Innovation Solution
The method involves dispersing pre-cotyledonary embryos uniformly onto a porous material in a sterile dilution medium, trapping them, and then contacting them with a development medium to produce conifer cotyledonary somatic embryos, which enhances yield and efficiency compared to traditional plating methods.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If pre-cotyledonary embryos are plated using traditional high-density methods, then the surface area utilization is high, but the embryo yield and viability are reduced
Solution Approach 1:
The patent changes the plating density parameter from traditional high-density to low-density (0.001-0.1 gram wet cell weight per square inch), and changes the medium state from solid to liquid, which together improve both embryo yield and viability by providing better nutrient diffusion and oxygen supply while reducing embryonic stress
Solution Approach 2:
The patent uses porous material as a support structure for the liquid medium, allowing efficient nutrient and oxygen diffusion to the embryos while maintaining proper positioning and distribution, thereby enhancing embryo development without requiring high plating densities
2Productivity
If traditional solid medium plating is used, then the method is simple to operate, but the embryo formation efficiency is low
Solution Approach 1:
The patent employs liquid medium instead of solid medium for plating, utilizing fluid dynamics to achieve uniform embryo distribution through pouring or flooding the porous material. This hydraulic approach simplifies the plating operation while dramatically improving embryo formation efficiency through better nutrient and oxygen supply
Solution Approach 2:
The porous material serves as a scaffold that holds the liquid medium and dispersed embryos, allowing easy pouring and distribution of the liquid-embryo mixture while maintaining embryo position during development. This combination simplifies operation and enhances embryo formation
3Ease of manufacture
If high density plating is employed, then fewer resources are needed per unit area, but the cost effectiveness and embryo quality deteriorate
Solution Approach 1:
By changing the plating density parameter to low-density and the medium to liquid form, the method reduces embryo stress and improves embryo quality (cotyledon development, viability) while maintaining cost effectiveness through efficient resource utilization in the liquid medium and porous support structure
Data Source
AI summary
In one aspect, the present invention provides methods of producing conifer cotyledonary somatic embryos from pre-cotyledonary embryos. The methods of this aspect of the invention include the step of (a) dispensing a plurality of pre-cotyledonary embryos onto a porous material horizontally disposed over a non-porous surface in a volume of sterile dilution medium sufficient to submerge at least the surface of the porous material, thereby uniformly dispersing the pre-cotyledonary embryos; (b) removing the sterile dilution medium from the non-absorbent porous material, thereby trapping the uniformly dispersed pre-cotyledonary embryos on the porous material; and (c) contacting the pre-cotyledonary embryos trapped on the porous material with development medium for a period of time sufficient to produce conifer cotyledonary somatic embryos.