Suppression of secondary wall formation in the basal supporting region of Arabidopsis inflorescence stems under microgravity conditions in space

We conducted the Resist Tubule space experiment to clarify role of cell wall in resistance inflorescence stems Arabidopsis (Arabidopsis thaliana) gravitational acceleration Cell Biology Experiment Facility on Kibo Module International Space Station. The rigidity was lower under microgravity conditions than at 1g, particularly basal region, which plays a central supporting entire plant presence gravity. In region conditions, levels matrix and cellulosic polysaccharides per unit length decreased correlation with decline rigidity. expression cellulose synthase genes CESA4, CESA7, CESA8, certain xylan tended toward suppression conditions. downregulation these may cause decrease polysaccharide levels, thereby maintaining soft extensile addition, UV-absorbing compounds pace region. Combined data hypergravity experiments, results suggest that secondary walls play an important gravity range 1 g hypergravity.