Correlation Studies On Mechanical Stress And Cell Elongation And Cell Division

To survive in a wide range of various conditions in which they are exposed to, plants must respond to both endogenous and exogenous stimuli starting with a transduction of chemical and mechanical factors into a biological signal and ending into a global response as modification of growth. It has been generally recognized that perception and response to mechanical stresses are likely essential at the cellular level. Plant cells are highly susceptible and receptive to the physical factors in both nature and experimental conditions, where exposure to mechanical forces dramatically results in morphological and developmental alterations in their growth.In the current study, protoplasts and wall-reserved intact cells derived from tobacco are subjected to a constant mechanical force conducted by agarose matrix. This form of investigation on mechanoregulated cell growth provides insight into how mechanical stresses can influence the cell expansion and cell division.The main results are listed below:1、By comparing the angles between long axis of elongated cells and the direction of main stress, Comparing different size mechanical stress And cell elongation relationship at the same time,It obtained the result that Cell elongation and stress loading size have correlation. Comparing the centrifugal force When loading a different time And cell elongation relationship,It reached the conclusion that Cell elongation and stress loading time have correlation. In addition to,Between Stress strength and stress and Cell partiality elongation response, it showed that cells tend to elongated perpendicular to the stress.It exist Obviously nonlinear dose-response relationship2、Observeing cell division plane of ProtoPlast in capillary tube, It reveal that plant single cell under the condition of loading mechanical stress,new cell walls are usually formed in a plane perpendicular to the main axis of cell expansion—that is, perpendicular to the long axis of the mother cell.