Nucleolytic Enzymes in Growing Root Cells

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Abstract
Experimental material consisted of fifteen serial sections 1.0 mm. in length, cut from the apex towards the base of bean roots of standard length. Optimum pH for ribo- and deoxyribonucleases were determined. Each enzyme was assayed at optimum pH in corresponding groups of sections, and the enzyme activity per cell calculated. Results are compared with those obtained using other tissues and with those of earlier investigations of the enzyme complement of the bean root.

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