Cell elongation in the soybean root : The influence of inhibitors of RNA and protein biosynthesis

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概要

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• A possible requirement for RNA and protein synthesis during cell elongation of intact seedling tissue was studied using the soybean seedling root with the elongating zone being delineated by India ink marks at 2 and 7mm back of the root tip. In contrast to most excised plant tissues, there was marked net synthesis of RNA and protein during cell elongation of the intact root. AD and CH were potent inhibitors of cell elongation in the soybean root. CH essentially eliminated protein synthesis, whether measured by net accumulation of protein or by ^<14>C-leucine incorporation, while completely inhibiting cell elongation after a short lag. AD, on the other hand, only partially inhibited protein synthesis while causing almost total inhibition of cell elongation after a lag. The capacity of the tissue to synthesize protein in the presence of AD was correlated with the maintenance of functional polyribosomes, thus suggestive that m-RNA associated with the regulation of cell elongation is more unstable (i. e., a shorter mean life) than total root m-RNA. FU did not inhibit cell elongation, protein synthesis or the level of functional polyribosomes. The requirement for RNA synthesis during cell elongation of the seedling root, as in excised plant tissues, appears to be restricted to the AMP-rich species of RNA presumed to be m-RNA.

• 日本植物生理学会の論文

著者

• Key Joe

  Department of Botany, The University of Georgia

• Key Joe

  Department Of Botany And Plant Pathology Purdue University

• LIN C.Y.

  Department of Botany and Plant Pathology,Purdue University

• Lin C.y.

  Department Of Botany And Plant Pathology Purdue University

• KEY JOE

  Department of Botany and Plant Pathology,Purdue University

関連論文

• Solute Leakage in Soybean Seedlings under Various Heat Shock Regimes
• Cell elongation in the soybean root : The influence of inhibitors of RNA and protein biosynthesis
• Inhibition by kinetin of cell elongation and RNA synthesis in excised soybean hypocotyl
• The Heat-Shock Response in Rice Seedlings : Isolation and Expression of cDNAs That Encode Class I Low-Molecular-Weight Heat-Shock Proteins

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