A novel blue-light phototropic response is revealed in roots of Arabidopsis thaliana in microgravity.

ABSTRACT:

Main conclusion

Blue-light positive phototropism in roots is masked by gravity and revealed in conditions of microgravity. In addition, the magnitude of red-light positive phototropic curvature is correlated to the magnitude of gravity. Due to their sessile nature, plants utilize environmental cues to grow and respond to their surroundings. Two of these cues, light and gravity, play a substantial role in plant orientation and directed growth movements (tropisms). However, very little is currently known about the interaction between light- (phototropic) and gravity (gravitropic)-mediated growth responses. Utilizing the European Modular Cultivation System on board the International Space Station, we investigated the interaction between phototropic and gravitropic responses in three A

SUBMITTER: Vandenbrink JP 

PROVIDER: S-EPMC5748516 | biostudies-literature | 2016 Dec

REPOSITORIES: biostudies-literature