I thought of two super high output plant genetics prep with screen protocols
From working (student) at the barley genetics lab I remember slicing up presprouted barley; rinsing with agrobacter plus gene sequence bacteria, then arranging these on agar plates to genetically engineer barley; thirty or
forty dots on a plate was typical afternoons effort; the rate of actual transfection was near 10 per 300 dots; the thing that was most effortful was slicing the barley at the germ (like wheatgerm) area. At the time I thought a headcheese approach might be better
The headcheese approach to mass producing genetically engineered plants from embryos:
use a wheat germ machine to gather barley germs (embryos); put many hundreds of barley embryos with agar to make a rod; use a microtome to slice off 1mm sized dots to place on growth medium
now, the nifty thing is that at 1mm spacing you can make a million little dots of plant embryo head cheese on a meter square flat surface, which is basically just a big table with a liquid spill rim or a flat
then you spray or paint on the genetically modified agrobacter vector that transfers its genes along with visibilization genes to the barley embyo slices on the flat; when the genes are transferred the growing plant tissue, known as a callus, makes a BFP or GFP or YFP various fluorescent proteins that an optical detector can detect. To make the attempt at transfering multiple genes at the same time you overpaint the treated areas with differently modified agrobacter vectors. Resistance to herbicide was the usual screen, but here I use visibilization proteins as a screen.
you could do this as an artist with your hand or you could just use a plotter structure to literally draw every combination of the multiple genes you want to combine with different fluids at different concentrations, basically you just draw your million subject plant genetic engineering projects with its wide variety of concentrations as well as possible gene combinations on the tray
moving from 30 or 40 to a million plantlets per afternoons effort is tactic kind of reminiscent of gene chips; with automation it creates millions of screened plants every few hours
when scientists amplified or downmodulated each of numerous chemical pathways (genes) to make a new higher yield of canola oil it was two years, this approach could shrink that to days if you have an idea of which genes to pump up, downregulate or contribute
Id like it to create massive rapid development of new plants like duckweed that makes ethanol or sugar to make ethanol
The headcheese technique must be modified to genetically engineer duckweed unless turion nodule head cheese is effective
I like the milled edges idea as well as the sewing idea
with the milled edges idea the duckweed is stacked |||||||||||||| to create rods, frozen, as it can live through that, then the sides of the rod are milled like the edge of a dime; transfection occurs at the growth area of a plant thus milling gives a tranfective surface plus the highly favorable cluster multiply growth point; the duckweed is placed on a mesh fabric on a million unit grid; gene transfection agrobacter is painted or plotted on the flat then covered with another layer of mesh; nutrient fluid flows atop the mesh; optical detectors look to find the fluorescent proteins that singly or multiply identify transfected plants; wonderfully just 30ish hours passes to a mature plant that has fully shown its ability to generate the product
each million plantlets may generate 10k transfections; each 10k transfections may simultaneously generate 100 plantlets with two different transfected genes; then maybe there is one with all three genes at once; obviously one also has the opportunity to rank the 10k transfections group according to gene effect amount then grow a big batch of that prior to transfection two
hyperprocessing: fabric rolls because the duckweed is between two mesh layers the size of the tray could be the length of a fabric roll; it is possible to wind many meters around a core then immerse the thing rather like a 35mm film developer
Sewing method is much more casual; lay a million duckweed plants on a mesh; cover with another mesh; run through a sewing machine where the | has milled sides to create multiple transfection opportunities per jab; after the | has generally left two or three small multiply edged transfection punctures on each duckweed plantlet you paint or plot the agrobacter gene vector on the top of the mesh; optical detectors find the plantlets that have been transfected; I like the idea of the sewing machine using thread soaked with agrobacter where various spools of thread could represent different genes to try
given that during the 90s about a trillion USD of petroleum was used domestically per year (three trillion now, twelve trillion worldwide) creating an ethanol plant which is currently on a few year projected horizon might be just a few months plus the rate of improvement is hundreds of times more rapid
There is a patent that covers some of duckweed genetic engineering, to make this fully public domain I'd have to create a new transfection method different than agrobacter or biolistics: here is such an idea create "splintery spaghetti" genetic transfection technology; this is where an item like a sewing machine | leaves splinters at the site; these splinters are made from a blend of starch polymer plus gene fragments or plasmids to transfer; it is the jabbing with an icicle version of biolistics thus should work as well or perhaps better as the polymer splinters could have pH buffers or beneficial to transfection chemicals like "competence" calcium chloride
I also think the idea of a | covered with a honeycomb of little chambers that carry plasmid containing fluid would function as well or better than biolistics, another method would be like velour plate colony transfer where rather than velour a wide field of ultra tiny silicon carbide |||| each honeycombed with plasmid fluid nooks could be pressed onto a duckweed bearing surface
anyway the headcheese is what makes the mass screen possible