In order to further study these complex interactions
among tropistic responses, we plan to study phototropism,
without the input of a gravistimulus, in microgravity
conditions during a spaceflight experiment. We are in the
development phase for an experiment on the International
Space Station (ISS) which would use the European
Modular Cultivation System (EMCS) in studies of root
phototropism in Arabidopsis. The EMCS has an
incubator, atmospheric control, a variety of LED’s, and a
high-resolution, movable video camera system that we
need for this project (Brinckmann, 1999). The entire
system is on a variable centrifuge palette so that an in-flight 1-gcontrol can be performed and intermediate g-levels
can be selected as well.