Solute Distribution in Sugar Beet Leaves in Relation to Phloem Loading and Translocation
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چکیده
منابع مشابه
Solute distribution in sugar beet leaves in relation to Phloem loading and translocation.
The distribution of solutes in the various cells of sugar beet (Beta vulgaris L.) source leaves, petioles, and sink leaves was studied in tissue prepared by freeze-substitution. The differences in degree of cryoprotection indicated that sieve elements and companion cells of the source leaf, petiole, and sink leaf contain a high concentration of solute. The osmotic pressure of various types of c...
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Earlier studies have shown that the retarding effect of low petiolar temperatures on sucrose transport through sugar beet (Beta vulgaris L.) petioles is markedly time-dependent. Although the initial effect of chilling the petiole to near 0 C is severely inhibitory, translocation rates soon recover (usually within about 2 hours) to values at or near the control rate. In the present studies, sele...
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7. PLATENIUS, H. AND J. E. KNOTr. 1935. The pungency of the onion bulb as influenced by the stage of development of the plant. Proc. Am. Soc. Hort. Sci. 33: 481-83. 8. SAGHIR, A. R., L. K. MANN, R. A. BERNHARD, ANI) J. V. JACOBSE.NI. 1964. Determination of aliphatic monoand disulfides in Alliwnlul by gas chromatography and their distribution in the common food species. Proc. Am. Soc. Hort. Sci....
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Autoradiography was used to determine the distribution of labeled sugar in conducting elements of the blade and petiole of sugar beet leaves at intervals ranging from 5 sec to 24 hr. The processes of assimilation by the green cells, collection of sugar in the minor veins and export in phloem elements were demonstrated visually. It appears that in minor veins sugar is translocated in companion c...
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ژورنال
عنوان ژورنال: Plant Physiology
سال: 1973
ISSN: 0032-0889,1532-2548
DOI: 10.1104/pp.52.6.585