Sources of Sucrose Translocated from Illuminated Sugar Beet Source Leaves

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Sucrose Translocation in the Sugar Beet.

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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Evidence for circadian regulation of starch and sucrose synthesis in sugar beet leaves.

Starch accumulation and sucrose synthesis and export were measured in leaves of sugar beet (Beta vulgaris L.) during a period of prolonged irradiance in which illumination was extended beyond the usual 14-hour day period. During much of the 14-hour day period, approximately 50% of the newly fixed carbon was distributed to sucrose, about 40% to starch, and less than 10% to hexose. Beginning abou...

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Turgor regulation of sucrose transport in sugar beet taproot tissue.

Sink tissues that store osmotically active compounds must osmoregulate to prevent excessively high turgor. The ability to regulate turgor may be related to membrane transport of solutes and thus sink strength. To study this possibility, the kinetics of sugar uptake were determined in sugar beet (Beta vulgaris L.) taproot tissue discs over a range of cell turgors. Sucrose uptake followed biphasi...

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Sucrose translocation and storage in the sugar beet.

Several physiological processes were studied during sugar beet root development to determine the cellular events that are temporally correlated with sucrose storage. The prestorage stage was characterized by a marked increase in root fresh weight and a low sucrose to glucose ratio. Carbon derived from (14)C-sucrose accumulation was partitioned into protein and structural carbohydrate fractions ...

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ژورنال

عنوان ژورنال: Plant Physiology

سال: 1983

ISSN: 0032-0889,1532-2548

DOI: 10.1104/pp.72.4.964