The concept consists of five smaller (9 cm/3,54 in in diameter) and two bigger (14,5 cm/5,71 in in diameter) agar plates. The composition of agar plates was chosen to resemble giant lotus pads swimming on a lake, now creating tiny lakes for the waterlilies themselves. Lactic acid is formed by the well-known bacterium Escherichia coli when fermenting the lactose which is found in the agar. Containing the pH sensitive indicator bromothymol blue, which turns yellow at an acid pH, meaning a pH lower than 7, a color shift from blue to yellow is caused by the presence of acids, lactic acid for example. The scientific background behind the yellow parts of the waterlilies is a fascinating discoloration of the CLED agar.
The white, fluffy looking parts of the lilies come about due to Geotrichum candidum, a mildew, living in dairy as well as the human buccal mucosa and lungs.
The green pads were realized by making a solution comprising sterile water and Micrococcus luteus and applying it to the agar with a brush as well. It was applied with brushes to achieve the fine strokes in the blossoms. In fact, they were drawn with Rhodococcus rhodochrous, an orange appearing bacterium which is primarily found in soil and water. But once you have a closer look you will recognize that those lilies are actually microorganisms growing on cystine-lactose-electrolyte-deficient (CLED) agar plates. Hopf and Michael Lanzinger from University of Applied Sciences Weihenstephan-Triesdorf in Freising, Germany.Īt first glance, you can see a cluster of waterlilies blooming on clear lakes. “Microlilies” by Sonja Borndörfer, Norbert W. Microbes grown on agar by participants who have access to, and created their work in, a formal laboratory setting like a university or industrial lab 1 st Place
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