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Evidence for a Regulatory Role of Calcium in GravitropismExperiments conducted to determine the cellular basis of gravitropism, the phenomenon of calcium migration following gravitropic stimulation, and the preferential accumulation of calcium in cells are described. Results of autoradiographic studies of cross sections of oat, and the pryoantimony precipitation of calcium in situ are discussed. It was found that the movement of calcium during gravimetric stimulation is a redistribution of calcium from the vacuolar regions into the cells walls. This movement requires precipitation of a calcium ATPase. The control of calcium ATPase by calmodulin and whether chlorpromazine is binding to calmodulin in plants are considered.
Document ID
19840003653
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Roux, S. J.
(Texas Univ. Austin, TX, United States)
Date Acquired
August 12, 2013
Publication Date
November 1, 1983
Publication Information
Publication: The Regulatory Functions of Calcium and the Potential Role of Calcium in Mediating Gravitational Responses in Cells and Tissues
Subject Category
Life Sciences (General)
Accession Number
84N11721
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
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