Making biotech plants and animals for a post-apocalyptic world

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Ok. Here's the setting. Before, there was massive amounts of tech and advancement and magic. Including fleshsmithing and genetic engineering. You can shift and warp and transform plants and animals like wet clay. Imagine the transformation of teosinte to modern corn, or the transformation of bananas to modern ones. Or wild watermelons and peaches to the ones used in agriculture.*

So... the apocalypse happened. And everyone got knocked down to medieval levels. But it's not that bad. The engineered plants and animals are the same. Just... gone wild.

So yeah. This is for worldbuilding purposes.

*




 
Honeyeater: This plant was originally designed for the purpose of recycling kitchen and garden waste. It resembled an oversized pitcher plant hanging from a short (as in, short enough for a human to harvest by hand) palm tree, complete with "coconuts" (actually named "honeyballs"). While it can grow on its own it only really thrives with a human or other creature willing and able to feed it.

Pretty much any type of organic material that isn't outright toxic (to plants) can be dumped into the pitcher of the plant where it will be consumed, purified and digested. It then secretes any excess nutrients into its honeyballs in the form of "treehoney", a substance very close to the honey created by bees, tweaked to be optimized for human consumption. Treehoney contained all the nutrients and vitamins a human needs, tastes very good, and like real honey lasts essentially forever without going bad with only a minimum of effort in storing it. The honeynuts themselves are hard shelled, but have an easily visible natural plug where they can be easily opened with human strength simply by grasping and pulling the protruding portion.

A human can survive in perfect health indefinitely on nothing but treehoney. However as nice as it tastes that gets monotonous, so it tends to be used at least as much as a flavoring, ingredient or base for other foods and drinks.
 
You do realize our cave man ancestors back in the day made cereal grains corn and such edible via mixing pollen seed with plants to make said hybrids.

Just saying, bio engineering is easier than need of lab work. Look at all those dog breeds as another example.
 
It did. Just pointing out the fact it happened before super mad science.

Yes way more cool stuff at rapid pace. Just saying though, humans have always altered the eco ststem.
 
Sigh. Let's change this subject.

Glowing Vines:

A variety of vines with pods strung along its surface, shaped like christmas lights. The vine itself is genetically and magically altered, capable of surviving in most situations and environments, and able to feed off ambient mana. The pods glow with bioluminescence, and are able to light up a room, similar to a light bulb. the light itself is soothing, and will not cause eye strain. The pods can be detached, and they will stay lit for 24 hours, and they can easily be regenerated in that time, providing a source of light for torches and lamps.

The plants themselves are not able to spread, due to various laws and regulations in place. Subsequently, they have to each be planted each individually. Every few meters, is a seed pod, that can be cracked open. The seeds themselves are rather sticky, and the glue on the seed coating can stick even on wet rocks or painted walls. Several days after being stuck to a wall, the seed cracks open, and a new glowing vine appears.
 
Malac, the all-consuming

A beast that is patterned to take after the pig, cow, and some other unmentionable thing. The jaws are immensely strong, capable of crushing metal, with a mouth capable of producing a short-lived acidic saliva. Teeth encased in metals and diamondoids, shaped to destroy different types of substances. A robust constitution that allows it to survive in anything short of Venus or the vacuum of space. A hardened digestive system that allows it to process the waste from industrial civilization, from plastics to herbicides to industrial waste to heavy metals. These creatures can feed on anything, bulk up on anything with carbon in it, and can reproduce 12 times a year, with litters of 10 or more. The clinch? These are pigs.

They eat nearly anything, and anything they can't digest is pooped out. The meat is immensely delicious, goes well with anything, and many more praiseworthy words. The beast itself can survive in cramped conditions, and with its robust constitution, it needs no medicine nor vaccinations. They are found often in space stations, in newly-settled planets, or in cramped urbanscapes.
 
Yggdrasil, the Worldtree: The largest known living entity, Yggdrasil is a highly modified organism designed as a vast low gravity habitat and space elevator array, as the name implies largely derived from a tree. In shape it is a huge, thin ring that encircles the world at geosynchronous orbit, visible as a green line across the sky. Periodically there are "roots" extending from it, organic cables mostly composed of extremely strong carbon based molecules that extend all the way down from orbit to root themselves in the planet and draw nourishment. The roots also have internal conductive elements that let them be used as the cables for elevator cars using an electromagnetic motor, assuming one has the technology to build one.

The main ring of Yggdrasil is mostly hollow and air filled, as well as inhabited by a wide variety of people, plants and animals. Yggdrasil is self-assembling and self repairing, and was only in the early stages of growth when civilization fell. It grew to maturity during the interregnum, and the survivors who were trapped aboard it during the collapse populated it as it grew.

Internally Yggdrasil is a low gravity environment, with a very low g "inward to Earth" region in the inner rim, a large effectively zero-g middle section, and a good sized fairly low g "pulled outward by centrifugal force" outer rim. The life forms and population in each region are quite different, adapted to the local environment; the "human" and demihuman survivors are all from ancients who were gene-adapted to low g in various ways or lived long enoguh to interbreed with them.

You do realize our cave man ancestors back in the day made cereal grains corn and such edible via mixing pollen seed with plants to make said hybrids.
With a great deal of difficulty and time, and only with organisms that already had favorable traits they could work with.

They eat nearly anything, and anything they can't digest is pooped out. The meat is immensely delicious, goes well with anything, and many more praiseworthy words. The beast itself can survive in cramped conditions, and with its robust constitution, it needs no medicine nor vaccinations. They are found often in space stations, in newly-settled planets, or in cramped urbanscapes.
And probably all sorts of places you don't want them to be. The wild versions must have made quite a mess after the fall of the old civilization, like real life modern wild pigs on steroids.
 
.... Can we have a description of the shape of Yggdrasil?
From a distance it looks like a thin green ring surrounding the world with many thin "roots" extending to the ground; the effect is rather like a thin-rimmed wheel with the world as a hub and a great many hair-fine (from a distance) spokes.

Up close it's a flattened torus (due to centrifugal forces) wrapped around the world covered in a forest of vacuum-hardened branches and leaves. There are also transparent and green-translucent panels that let in outside light.

Since almost all of it grew without direction after the collapse, the interior is rather chaotic, much more so than originally intended. The interior is a maze of chambers & passages of widely varying sizes, separated by organic iris-barriers that close in case of pressure loss. Deeper in biochemical lights & "sun wells" extending from the surface provide some ability to see in the interior.

Since Yggdrasil was originally intended to support an internal ecosphere (although the original intent was something a lot more organized and garden-like), it has everything from regions of artificial soil secreted by Yggdrasil to support lesser plants (and with additives to make it hold together in the low gravity), to various nodes that secrete water & nutrients.
 
The Ghar-dorai Tree:

The Ghar-dorai tree (who's name means "blood of fire") can be found throughout all of the known lands and are most famous for their large crimson bulbs which can be refined to create fuel for machines. The cultivation and harvesting of these valuable trees is strictly regulated by the warlords and merchant princes that own them and any theft of the bulbs or seeds is severely punished.
 
Nanotech injector hives:

A symbiosis, part plant, part animal, part nanotech.

Plant:
Main portion of the 'hive'. Starts out as an immensely hardy and durable plant, capable of surviving nearly anywhere. Can live from the arctic to the Sahara desert. Sterile, and requires human intervention to reproduce. Has many hollows and tubes passing through it, allowing the symbiotic organisms within to enter for shelter, and also feeds and nourishes them. At its core, is a web of nervous tissue, capable of matching any computer, as well as several organs displayed around it that can analyze any biological samples and radio waves.

Insect:
A cross between hornets, bees, and mosquitoes. A short life-span, needing to feed continuously on sugary nectar. Without the plant part, it is near-impossible for it to feed itself. The insects themselves are sterile, and cannot reproduce. They are 'born', from sacs and hollows in the plant's interior that produce them. Multiple sensors, that allow various things. Detection of bodily odours and unique biochemical signatures. Sensors on the feet, that allow them to analyze DNA. And a blood-sucking proboscis. It takes a blood sample from the nearby-human, and then stores it inside its body. Then it goes back to the plant, planting the DNA and blood sample at its core.

Technology:
The plant gets to work, analyzing the proteins, DNA, antibodies, lymphocytes, and what else from the samples. Then it produces a liquid, that another insect sucks up and flies out, tracking the person via the bodily odours and unique biochemical signatures. It lands... and injects a cocktail of nanites, produced by the plant, designed by the core of neural tissue, from databases within. The nanites reformat the human's body, over weeks, enhancing healing, removing any weaknesses like asthma and poor eyesight, and adding upgrades such as night vision and some such*. The blood sample helps, letting the nanites do their jobs properly without killing the person, and avoiding the target's own immune system.

If the person already has such nanites, the plant itself will check, update its own database with anything useful it finds, and then send out the insect with any possible updates and improvements it has available. In this way, the plant gets better and better at improving humans.

*Think of Eclipse phase Basic Biomods, Medichines, Nanophages, Respirocytes, that kind of thing.
 
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Architect Worms and Road Coral.
Architect Worms

Basically, some kind of burrowing wormlike creatures ranging from actual worm-sized to five or six meters long. Instinctively programmed to dig out soil and rock*, mix it with biological glue-like material to create a vaguely cement-ish substance and use both the caves they'd create by digging for raw materials and their "cement" to erect vast megastructures/cities.

Artificially created as tools, still working long after their creators died out to turn uninhabited places** into cities based off creator plans in their DNA. Increasingly, as random mutations distort the plans, the cities go from organized if strange in design to twisted labyrinths of distorted and mismatched features from multiple building templates.




* Acidic biochemical secretions help with this.
** Frequently unlivable places, at least to humans. The long-extinct creators might have either been adapted to enjoy having their cities built in deep-sea thermal vents, unearthly, deathworld environments, inhospitable lifeless deserts, etc or it's equally plausible that the worms spread out of their intended locations, building as they went. Possibly both options are correct, the creators certainly weren't humans and the locations of their cities is just as strange as everything else about the cities.
"Road coral."

A now long-gone civilization* somehow created a species of land-adapted coral, which they would be able to shape into a paving material by spraying down specific areas of land with nutrients, then setting lose the tiny mobile larva stage of the coral to feed and grow on the sprayed land.

With the civilization gone, the remaining coral has grown randomly, forming vast and mazelike networks of paved roads.

* The same one that created the Architect Worms. Pretty much, the idea here would be to have an explanation for the mazelike ruins in areas where nobody in their right mind would want to live in fantasy settings. They grew into those places after their creators were already long-dead, and without shaping and pruning, it's no wonder that they ended up as labyrinths. Or the city builders weren't humans or even anything remotely like humans and they had no interest in making their cities pet-accessible if one if them had wanted to keep what were basically still apes at that time in per-history their apartment for some reason.
 
Brass tubing

A organometallic plant, that grows akin to bamboo. Upon death, the organic barriers between each section dies, leaving a hollow shell composed out of a mixture of alloys and proteins. The shell itself is basically in the shape of a pipe, with coating to prevent rusting, fouling, and to ensure a smooth passage for anything transported inside. The shell is hard and strong, but upon heating it becomes flexible and pliable. Allowing a man with a torch to bend it around corners. They come in various sizes, from ones wide enough to for a man to crawl through, to those the thickness of a finger.
 
Judgernaut:
Understanding is such a precious thing. And as crystalized understanding, mutual and from above and below, are laws not to be cherished and protected?

The Judgernaut thus does good work, shoring up the failing mores of mankind. Such is the belief ot the settlements within its path.

To understand it, one must first accept that no form of information is truly secured against all the ravages of time. This was something that troubled the ancients as well, and the Judgernaut and others of its ilk seems to be just one of many ways of putting this bit of understanding in practice. And one must understand that laws are a product of specific times, chains of cause and effect. Thus, to wield one is foolish: To wield all of them would be foolish. But only for a human.

It's a remarkable beast, taller than many of the walls of the hamlets and abodes it trudges through. Or rather, floats through. Despite its size rivaling that of a big building, this creature has the capability to levitate through the air, unimpeded by wind. Only strong magnetic fields can stop its movements, causing the dozens of disks that line the under-curve of its spiraling shell to falter. They're massive things of keratin, their edges cracked and crackling with electricity. Many an attempt has been made to pry them away from the creature's body, whether still living or dead, but the number of success stories can be counted on the fingers of a mangled hand.
The ancients were wise, after all. Perhaps not wise enough to stop the end, sure, but those who designed the Judgernaut knew their craft.


And knew their laws. So does the Judgernaut, and its understanding has not fossilized to the times before, unlike its massive carapace. The routes of these creatures seem to be utterly casual to an exterior observer, at first. These who dabble in the matters of laws and justice and preserving knowledge, however, can easily recognize that each stop coincides with a settlement somewhat tied to these topics.
In these places, the Judgernaut's arrival is a wellspring of mixed emotions. It metes out salvation and executions in equal measure, often in accordance to systems arcane to the average person. Entire generations of scholars have strained their eyes to read accounts of their trials, and their lungs have grown weak from the hour-long speeches needed to cater to their attention.
But let us say that there are few judges as fine as such a creature.

Everything in its body is geared towards this. Its manifold eyes- Arranged always in geometric shapes, always fly-like and always of a bright colour- Can identify and decipher the hundreds of tongues that flowered after the ancients' times, can see through stone and lead as easy as a thin mist, and can see things many miles ahead. They are said to see through bone and flesh as well, and many criminals have broken down and confessed just by feeling the creature's gaze upon them.
Its head is armored with scab-like metallic slabs, more natural growth than vulgar crafted defense, each capable of withstanding rains of projectiles of all sorts. The rage of a crowd lashing against an injust sentence is treated with the same deference as the offensive of a general: Ignored, or swatted aside.
Its mouth-parts are a fine array of antennae, whiskers and probosces through which the Judgernaut makes itself understood as needed. Their voices are compound things with an eery reverb, well-matching the scent of ozone that surrounds them. A single spoken word at the end of a sentence can send entire cities plunging into sheer anarchy, or raise a kingdom from decadence.

They trade in anything tied to law. They may offer consultation in exchange for something, often written reports. But the Judgernaut is not elitist: It will happily register the tall tales of crones and bear witness to plays and parodies, all in the name of posterity. Many a town have made their arrival into a festivity unto itself, aided by the bounties that these gigantic creatures often offer in exchange for their services. They may:
-Store things within their shells. Each Judgernatur's interior is composed of hundred of discrete, vacuum-sealed compartments that can hold and preserve all sorts of matter, from clay tablet to precious electronic parts. Sometimes, even bodies- Dead or otherwise- Are stored within. The living may find a sort of afterlife in this creature, their brains trapaned by soft, nearly invisible fleshy tendrils that let the Judgernaut see into their minds.
-Memorize songs, speeches, performances, and recall them. Even their smells, even the sensations of the spectators and actors. They are often sought by playwriters for this, and by politicians interested in the oratory trades.
-Communicate with one another over massive distances. Thanks to their antennae, they are capable of sending signals to their brethren: They do need their general location, however.

And above all, provide informal and formal judgement. Many have been made into baliffs, judges, seldom executors, sometimes orators, thanks to their lack of needs or (mostly( wants. Their thought process is alien to most, but few dare dispute their conclusions, for these tentacles are as armored as their heads yet as fast as whips despite their size. Most Judgernauts however do not find any pleasure in dispensing retribution: Many prefer to record the proceedings. Even fewer have any real malice in them. The vast majority swings between a childlike curiosity- Fleeting yet earnest- For all things not of the laws and memories- And a blunt, somnolent apathy to the rest of the world. Loneliness does not bother them, nor love nor pain or hate. They know these things as abstract concepts they can apply as they wish, although it's widely known that all there is needed to send one of them in apoplectic fits of often apocalytic rage is even daring to erase information pertaining the laws of ancient times.

Yet, they do not seem to be interested in the moral dimensions of the apocalypse itself. They mourn the eschaton only for the loss of judical systems of incredible complexity and finesse, the means of dispensing justice of entire civilizations erased like sand under the waves.
But above all, they are content to follow through on their judgerment. To not do so is considered something that must be remedied as soon as possible at best, and a sign of abhorrence and perhaps damage. Few Judgernauts die, and none of natural causes. Their kin is more than willing to break out of their predictable patterns to retrieve their bodies, and while they hold no sentimentality towards the body itself, they will certianly take umbrage at people looting its contents.

Like many other creatures, the Judgernaut adapts to its surroundings as well. Some of them have traced their ancestry backwards with stubborn perseverance, and now aid the enterprising crews of subarminers who want to plunder the remains of the cities of the ancients on the seafloor. Some go further still, turning their entire bodies into digging implements, gigantic drills and armored furnaces. They take a supreme delight in slowly traversing the honeycombed superstructures that dot the planetary crust, and some are even said to have made contact with the chtonian intelligences that are said to reside near the nucleus.
Others prefer to voyage in light and silence the likes peoeple have rarely felt since the end of the ancients. Some can still see them, can still follow their turquoise trails as they lit up the night sky. Several dozen Judgernauts were last seen cognregating around some of the ancients' abodes in the void, their mouths spinning armor-gossamer around the bulbous form. They are believed to be carrying out an ancient mission.

Some even go as far as to say that this is proof that the ancients have survived somehow, somewhere out there, and that one day the Judgernauts will fire their engines all at once and sail forth in a void so primal as to eat all flames. All but one: A brilliant thought inscribed on coral-like circuitry embedded in shells blessed by golden geometries. Theirs is a belief made reality.

Let justice be done, even though the heavens may fall.

EDIT: Whoops wrong thread. i think.
 
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Blimp-Jellies

Large floating spheres that float though the lower athmosphere with numerous tentacles dangling down from their main body, with lengths often reaching multiple kilometers. The main sphere is filled with dense hydrogen gas and can be considered rather profitable to harvest. However, care must be maintained to not come in contact with the tentacles, as they have both a rather potent neurotoxin and are nearly impossible to free oneself from them once attached. In addition, they have been known to capture and consume any life form (and in rare cases, small vehicles) smaller than their main sphere.
 
Microchip trees

Some things were too difficult to build. Especially after the Grand Wasting

Take microchips. Entire mines, needed for the materials. Silicon, rare earth metals, gold. Entire fleets of shipping, to move about the components and tools. Entire factory lines; clean rooms, highly educated technicians and designers, years upon years of building and training, and enough resources and money used to make the tools to make them, that they could buy and sell entire ships. After grand wasting, that could not be. No more resources. The supply networks, long since destroyed. The knowledge base and the skilled hands used to craft them, were gone and would would take decades to train. The factories and workrooms where such wonders were produced were wiped out and would take centuries to be constructed. And that was the bare minimum. More likely, it would take centuries. Centuries without computers and electronics. Without artificial intelligence, without humanity's more complex tools. And that could not be done. And the electronics would not last long. At least, 10 years or so.

Enter, the Microchip trees.

Low hanging fruit trees, with black coloured leaves, white bark, and sprawling roots. They are capable of taking root in nearly any place, but they specialise in soils heavily contaminated by chemicals and heavy metals. They suck up such metals through their roots and underground fiber network, and bring it up into their fruits. There, specialised cells, more akin to nanites than ordinary plant cells, construct their product. The product is like a bean pod. Cracked open, to show several dazzling microchips. Surrounding the tree are several pitcherplant like structures, where electronic waste and the detritus of tech can be placed inside, to be broken down by acids and enzymes and symbiotic bacteria, to recycle precious elements.

The chips themselves are a marvel. Part tech. Part life. Self repairing and adaptive, constantly improving itself in whatever it is used for. Extremely efficient, and takes a few hundred years to begin break down. The ancients had preserved their civilization from sliding into the brink.
 
"Bookworms"

Created during the very end of civilization as a last-ditch effort at preservation. Start with extremophile nematodes, then cram the equivalent of a STC database into their junk DNA. While they theoretically hold the knowledge to resurrect the lost pre-apocalyptic golden age of technology, good luck extracting it with a medieval techbase.

There are also probably cultists who deliberately cultivate them, possibly parasitically inside themselves. Still less squicky than Remembering Machines.
 
Boring but useful one I created for my own story: Balloon Bush, a distant descendent of jatropha curcas that's had the benefit of several centuries of selective breeding and a few gene tweaks. The oil it produces is inedible but good for making biodiesel, and while its yield isn't all that great compared to conventional oil crops like canola or peanuts it has one key advantage: It'll grow damn near anywhere, and produce a reasonable crop from soil where almost nothing else will. It also requires relatively little actual refining to burn well enough to run a simple diesel engine, such as you might find in the ancient but widespread all-terrain vehicle design that travelled with the first wave of colonists leaving Old Earth and has stuck around largely intact ever since, and which for reasons lost to the mists of time (unless they bother to look it up) is referred to as a "landy".
 
I'm just going to link to the Orion's Arm page on deliplants here, because I think a civilization with the sort of Sufficiently Advanced biotech the OP describes would be very likely to create something like that.
 
Their actual utility has been lost to time, but there exists in the ocean a rare aquatic creature of unique ability.

The Lux Pistris it's a large predatory fish of some sort. Easily identified by large teeth and a dorsal fin.

On its own, the lux behaves like it's non-illuminated brethren.

But in large groups at frenzy, unique characteristic is apparent.

Coherent light emits from the animals eye sockets.
Nearby pray are usually dazzled into seizures, blinded either temporarily or permanently, or in some cases, burned.

This type of attack is not only inflicted on fish.
A large enough frenzy may results in the attacks on booden boats, flocks of seagulls, or unlucky sailors topside.

It is for this reason that sailors typically wear eye patches over one of their eyes and at all times. Should they be dazzled and seeing spots in a free eye, they can lift to the patch and find a way to a safe hand hold. Should it be a powerful blast, they only lose the one eye.

The largest of the lux are able to set cloth sails and wooden hulls ablaze.

One lux of legend was said to have been able to cook a sailor with one blast. This is of course an old sea tale, likely made of by drunken mermen to collect sympathy.
 
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