Improved Automatic Microtome

Publisher Website
Google Scholar
Abstract
One twig of a Y-branch of Eureka lemon was covered with a cellophane bag while the other twig of the Y was dusted with S35 using a camel''s hair brush. The dusted twig was then covered with cellophane. At harvest, the sulfur in the dry protein and water soluble materials was isolated as BaSO4, plated out, weighed and counted for activity in a flow counter. While the activity of the BaSO4 for protein was over 4 times as active in the dusted leaves as in the undusted leaves, the presence of considerable activity in the undusted leaves indicated that elemental S dusted on the leaves is transported and used in the nutrition of higher plants. The specific activity of the BaSO4 from the water extracts of non-dusted Y branches was 10 times as great as that of non-dusted distant leaves on the same tree.

This publication has 1 reference indexed in Scilit: