A text using bioluminescent bacteria as a living and light emitting ink. An interesting message revealed! In November 2012, this bacterial message infiltrated our own communications systems, as this became the first ever bacterial Tweet.
This is the first of a series of works that engages three of my passions, science, art and science fiction. At random, I tore a page from The Scar by China Miéville and inoculated it with a bacterium whose characteristics I thought matched the written words. The text was inoculated with the naturally red pigmented bacterium Serratia marcescens. Obviously, this strain becomes a metaphor for a type of perptual blood as it multiplies and moves around the page, and insinuates itself into the fabric of the paper. In this way, it’s characterisitcs come to match China’s writing. Bacteria actually contain haemoglobins similar to our own, and thus possess the origins of our very own blood.
This is a bit of fun I did with my children to show them the dangers of eating too many sweets. Bacteria are commonly used as poweful sensors for toxins and environmental pollutants so for this experiment I fed some Gummy Bear sweets to the spreading soil bacterium Bacillus mycoides. As you can see from the images above, it doesn’t have many problems with the orange sweet but it seems to find the green sweet very unpalatable and actively avoids it. The zone of no growth around the green sweet is called a zone of inhibition, and a similar method is routinely used to test the effectiveness of antibiotics against bacteria. Here the sweet would be replaced by a paper disc loaded with the antibiotic of interest.