ACTIN ORGANIZATION AND GENE EXPRESSION IN BETA VULGARIS SEEDLINGSUNDER CLINOROTATION

摘要

Actin microfilaments (MFs) as highly dynamic structurernrespond by rapid reorganization to different externalrninfluences, including gravity. The object of ourrnexperiments was to examine both the actin organizationrnand actin gene expression during growth andrndifferentiation of root cells under clinorotation. It wasrnshown that MFs acted as the indicator of changes causedrnby altered gravity in distal elongation zone (DEZ) cells,rnparticularly actin cytoskeleton is enhanced in cortex cells.rnThe data testify stable actin expression under alteredrngravity. The F-actin MFs enhancement in cortex cells ofrnthe DEZ occurred under clinorotation at the same level ofrnthe total actin content as in the stationary conditions isrnsuggested to be caused by transformation of G-actin intornF-actin.