PLANTS: The apple and potato of desire

THE banana plant can 'walk' up to 40 centimeters in its lifetime. Many herbal plants can warn each other chemically when predatory herbivores are nearby. The sunflower is able to extract radioactivity from water.

Plants really aren’t appreciated enough in our hi-tech, modernised world. Many humans like to believe that we somehow exist outside the web of nature rather than living within it. From an evolutionary point of view, plants are just as advanced as humans. Time and time again nature proves that it is stronger than any of our designs as we constantly try to control it.

A friend of mine who has just come back from the United States told me about a fantastic book by bestselling author, Michael Pollan, called The Botany­ of Desire. The book tells the story­ of human desire and is about the domestication of four specific plants from the plants’ perspectives (metaphorically speaking). The apple, tulip, cannabis and the potato have all been integral to the human tale and have influenced history, economics, politics, religion and technology and raised debate over genetically modified food.

The Apple of Desire

Apples have evolved to gratify our desire for sweetness — an innate, hardwired desire that is simply a part of our biology. From an early age we learn that bitter plants are often poisonous while sweet ones are calorie-rich and therefore good for us.

The apple first sprouted into existence in Kazakhstan. To migrate to all four corners of the globe and spread its genes, it had to appeal to mammals as a sweet food source. This brought the apple to the New World.

However, what was unknown to the early pioneers is that every apple seed within an apple contains different genetic material and will produce a completely different variety of apple if planted from seed. These tend to be very bitter and New World apples were primarily used to make hard cider, which put rural America into a great binge.

Today there are thousands of apple­ varieties and it is still arguably the universal fruit. It even influenced artists of the Renaissance to imagine the forbidden fruit in the Garden of Eden as being an apple.

The Potato of Desire

The potato represents our desire to control nature and cultivate a staple food source. It led to the rise of the Incan Empire and helped fuel the Industrial Revolution. It changed the course of European­ history and led to a huge population­ boom. For civilisations in and around Europe potato crops freed more people from tilling the fields and allowed them to focus their attention on other pursuits.

The potato was also a godsend for the Irish who were unable to grow much of anything. This was until a fungus caused the great potato famine in the 19th century — killing over a million people.

The potato has taught us a valuable lesson in biodiversity and illustrates the risk of monocultures. Growing just one species of an edible plant makes entire crops vulnerable to disease and infection. However, the demand today for a certain kind of McDonald's potato chip has resulted in farmers once again growing mostly just one kind of elongated potato.

Attempts to prevent another potato famine has led several farmers to genetically modify their potatoes. Splicing a gene from a bacterium that lives in the soil with the potato leaf kills insects, but has also led to huge consumer uprisings against genetically modified foods.

• Read The Botany of Desire Part 2 here

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BOTANY: The tulip, marijuana and human desire

** Read the first part of this article here **

Cannabis

MARIJUANA gratifies the human desire to experience an altered state of consciousness. We are all born with an innate drive to experience other mind states periodically, whether this manifests into singing, dancing, experimenting with substances or jumping out of an aeroplane.

The genius of marijuana is to appeal to this human desire and it has mastered the art of biochemistry. Through it we have discovered a wealth of information regarding how memory, emotion and consciousness all work.

Marijuana’s world domination strategy involved producing more of the chemical (THC) that appeals to the human creature in order to be spread its genes and be given more habitat in which to thrive. Anthropologists posit that the only human culture never to have been influenced by this plant were the Inuit.

Most cultures have historically used cannabis to relieve pain. In Western culture marijuana was the driving force behind the jazz era and set alight the social revolution of the sixties.

The banning of marijuana in the United States led people to splice the genes of Mexican­ and Indian marijuana to produce a short, resilient and fast-growing plant that could be produced indoors. This has resulted in an almost entirely new species of plant, which now largely lives a cushy existence removed entirely from nature and the foothills of Mongolia and China where it originated.

The Tulip

The tulip, like many flowers, has evolved to gratify our desire for a certain kind of beauty. Flowers have been flaunting their beauty for more than 100 million years since the rise of the angiosperms. These plants form fruit and seed and have male and female types, which allows for the mixing of genes. This creates greater variety, which means greater adaptability and ability to survive.

When the tulip caught our attention and began to be cultivated, this plant underwent some startling changes. Its new forms bewitched the sultan of the Ottoman Empire and engulfed the Dutch in “tulip mania” during the 17th century. The tulip fast became one of the most valuable commodities in the world and spurred one of the biggest investment bubbles in human history.

The tulip came to denote wealth and status and it became fashionable for the prosperous to grow flower gardens. One tulip variety, the Semper Augustus, fetched as much as R70 000 in today’s money. Soon there was more money outstanding on tulip bulbs than there was in circulation, which caused economic collapse.

It was later discovered that the most sought-after tulip varieties were actually infected by a plant virus. Today, more than 19 million tulips leave Holland for flower shops around the world.

In a nutshell, plants are pretty amazing. The central lesson we can take from these four species is that we need to stop trying to control nature­ and rather learn to work with it.

• Video footage, interviews with Michael Pollan and more about The Botany of Desire can be explored online at www.pbs.org

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BIOLUMINESCENT PETS: Glowing creatures that light up your life

BIOTECHNOLGY is a fascinating field. It has so much to offer society. It is not inaccurate to say that it will inevitably be the salvation of our planet. Advocates can immediately point to its beneficial uses in agriculture and the production of eco-friendly fuels.

However, it seems that a very fine line is crossed when science begins to toy with nature. In fact, it is almost impossible to utter the term “genetic engineering” without raising several ethical questions and rallying its opponents.

The world today would be a very different place if science was unregulated. In many instances, control over its application is necessary for there is such a thing as mad scientists who will stop at nothing to test their latest scientific experiments. However, the more level-headed scientists become frustrated when practical and theoretically beneficial applications are simply dismissed on ethical grounds.

Bioluminescent biotechnology is one seemingly innocent branch of science that has brought some interesting ideas to the table. Bio-geneticists in this field have spoken about glowing trees that light up highways, agricultural crops that glow when they need watering, and even bioluminescent methods of detecting dodgy meats and other foods. Yet the real controversy arose when they began speaking about bioluminescent pets.

Bioluminescent pets: GloFish sparks debate

Pet stores in the United States have been under the spotlight since 2004 over the sale of genetically-modified fish that glow in the dark. Sold under the name GloFish, these creatures carry a lofty claim to fame: they are the nation’s first officially sanctioned genetically-modified pet, and scientists say that they won’t be the last.

The GloFish is a Zebra Danio that is made to glow red by the insertion of a gene found in sea coral. Naturally black and white, the new GloFish has gone from curiosity to a focal point in the debate over biotechnology and bioluminescent pets.

There are valid points to be made on both sides of the debate. The central ethical concern centers on the idea of altering the genetic make-up of an animal when there’s no purpose besides our own pleasure. However, most bio-geneticists will argue that this has already been occurring for years.

Bioluminescent Pets: The Eighth Day

The pet industry is in many ways a peculiar venue for such a heated debate over the wisdom of genetic modification. The whole notion of a pet, after all, is based on generations upon generations of selective breeding aimed at drawing out certain characteristics that make animals more suitable companions.

Think about dog breeding and all the breeds of dog that wouldn’t be around without human interference. These pooches may not glow in the dark, but the fact that their genes were somehow manipulated can still be used in favour of genetic engineering.

The scary part is that geneticists could very well create an alien-looking, glow-in-the-dark dog. They’ve done it with mice and fish — the latter being the more popular. In fact, the GloFish has absolutely opened the floodgates to a whole new pet trade in genetically engineered animals.

Bioluminescent pets: Upsetting the natural balance of the wild

People who are opposed to the idea may also bring up the risk of unregulated gene-altered or bioluminescent pets upsetting the natural balance of nature and the wild. However, the idea of a rogue GloFish escaping its aquarium and spawning an army of mutant glow-fish in the wild that ultimately wipe out other species of fish, does not presently have a lot of backing.

Yet the question remains: How will a glowing fish benefit society? What’s interesting is that the GloFish was not originally engineered to be a pet. In fact, its creation was rather strange. According to a Washington Post article:

"... glowing fish of a related species were originally developed in a Singapore laboratory for use as a modern-day canary in a coal mine. The fish were supposed to indicate, by glowing, if a given body of water is polluted."

Although this practical use of glowing fish failed, there still seems to be more weight on the side of the debate that argues that genetic modification of animals in general can be advantageous to both people and pets. Researchers are already at work trying to create a cat that won’t aggravate its owner’s allergies. Other possible creations include a dog that isn’t as susceptible to hip dysplasia - an ailment common among German shepherds and Labradors that is associated with over-breeding.

Proposed applications of engineered bioluminescence

Some other proposed applications of engineered bioluminescence include:

• Detecting bacterial species in suspicious corpses.
• Novelty pets that bioluminesce (rabbits, mice, fish etc.)
• Agricultural crops and domestic plants that luminesce when they need watering.
• Bio-identifiers for escaped convicts and mental patients.
• Glowing trees to line highways, thus saving on government electricity bills.
• Christmas trees that do not need lights, reducing danger from electrical fires.
• New methods for detecting bacterial contamination of meats and other foods.

So will (or should) biotechnology be left to genetically modify our future pets? It seems that this is already the case. Whether they will be bioluminescent remains a question of personal taste and will ultimately be left to public demand. There will always be a market for the bizarre. Would I ever add a GloFish to my aquarium? Sure. You can get them in the U.S. for $5.

Related posts:

• Exotic animals: to pet or not to pet?
• A beginners guide to keeping tropical fish

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