"Root patterns believed to be gravity dependent grew in the weightless ISS environment."
Thale Cress (Arabidopsis thaliana) which has been grown in an experimental chamber on board the space station was genetically modified to give off an eerie green glow under stress. This was not a mere novelty. The glow has a serious purpose. The plants was subjected to extremes of pressure, temperature and drought, (some extremes can only be found in space). By watching parts of the plant light up scientists were able to track cellular changes.Researchers were surprised by the results.Root patterns believed to be gravity dependent grew in the weightless ISS environment. Perhaps plants are not the passive passengers on the Earth's surface we believe them to be.