Root growth direction in simulated microgravity is modulated by a light avoidance mechanism mediated by flavonols.

ABSTRACT: In a microgravity environment, without any gravitropic signal, plants are not able to define and establish a longitudinal growth axis. Consequently, absorption of water and nutrients by the root and exposure of leaves to sunlight for efficient photosynthesis is hindered. In these conditions, other external cues can be explored to guide the direction of organ growth. Providing a unilateral light source can guide the shoot growth, but prolonged root exposure to light causes a stress response, affecting growth and development, and also affecting the response to other environmental factors. Here, we have investigated how the protection of the root from light exposure, while the shoot is illuminated, influences the direction of root growth in microgravity. We report that the light avoidance mec

SUBMITTER: Villacampa A 

PROVIDER: S-EPMC9327515 | biostudies-literature | 2022 May

REPOSITORIES: biostudies-literature