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Regulation of invertase activity in sugar beet tissue cultures


, : Regulation of invertase activity in sugar beet tissue cultures. Fiziologiya Rastenii (Moscow) 29(6): 1188-1194

In tissue cultures, derived from sugar beet root and from the cotyledons of 10-day-old seedlings, some differences were observed in their ability to activate various invertase forms. This suggests different mechanisms for controlling activities of this enzyme. In intact roots and tissue culture the regulation of acid invertase activity occurs either by repression and derepression of the synthesis of invertase protein or by an endogenous inhibitor affecting synthesized enzyme molecules. The invertase inhibitor, of a protein nature, was isolated from root tissue culture. The inhibitor was less active than the one isolated from the stored root. No invertase inhibitor was found in the tissue culture derived from cotyledons. In sugar beet root tissue culture, the weakened mechanism for controlling acid invertase activity fails to provide conditions for performing a distinct sugar-accumulating function. Some metabolic specificity characteristic of the stored root is still retained.

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Related references

Angelova A.A.; Atanasov A.I.; Stambolova M.A.; Nikolov T.K., 1974: Study of invertase activity and sugar content in a sugar beet tissue culture grown on a medium with chloramphenicol. Fiziologiya Rastenii (Moscow) 21(5): 1021-1024

Angelova, A.; Atanasov, A.; Stambolova, M.; Nikolov, T., 1974: Invertase activity and sugar content in cultures of sugarbeet tissue cultivated on a medium containing chloramphenicol. Soviet plant physiology: (Trans 1975), 21 (5) 848-850

Collin H.A., 1979: Growth and invertase activity of sugar beet callus. The nutrient requirements and cultural conditions for the initiation of sugar beet callus from the variety Kawe AA were established so that on a basic Murashige and Skoog nutrient medium containing 1.0 mg 1-1 kinetin, 1.0 mg 1-1 2,4-D-(2,4-dichlor...

Gonzalez, M.; Roitsch, T.C.judo, F., 2005: Ciradian and developmental regulation of vacuolar invertase expression in petioles of sugar beet plants. The expression pattern of the genes coding for vacuolar and extracellular invertase activity was analyzed in sugar beet (Beta vulgaris) and compared with the expression of sucrose synthase in this important sucrose-storing crop. Northern blot anal...

González, Mía-Cruz.; Roitsch, T.; Cejudo, F.Javier., 2005: Circadian and developmental regulation of vacuolar invertase expression in petioles of sugar beet plants. The expression pattern of the genes coding for vacuolar and extracellular invertase activity was analyzed in sugar beet (Beta vulgaris) and compared with the expression of sucrose synthase in this important sucrose-storing crop. Northern blot anal...

Stone B.P.; Whitty C.D.; Cherry J.H., 1969: Effect of ethionine on development of invertase in slices of sugar beet d tissue beta vulgaria d. Plant Physiology (Rockville) 44(SUPPL): 36

Pelicaric, S.; Radojicic, M.; Milic, M.; Rudic, E., 1967: A study of invertase activity in fresh and stored sugar beet. In a 32-day storage trial with sugar-beet, topped roots (crowns removed) lost 0.1 g sucrose/kg roots per day compared with 0.048 g/kg where leaves only were removed before storage; invertase activity rose during storage by 224% in the former treat...

Engel, O.S.; Kholodova, V.P., 1969: Activity of invertase and accumulation of sucrose in sugar-beet roots. Invertase activity in sugar-beet roots was high during the first 45-60 days of growth, being up to 30 micromoles of hydrolysed sucrose per g of fresh weight per h in roots weighing 30 mg. Activity decreased with plant age and ceased when root weig...

Hatch, M.D.; Glasziou, K.T., 1963: Sugar accumulation cycle in sugar cane. II. Relationship of invertase activity to sugar content and growth rate in storage tissue of plants grown in controlled environments. Results are discussed in relation to the concept that the invertases contribute to the partitioning of the available carbohydrate from photosynthesis between sugar storage and growth. -Colon. Sugar Refin. Co. Ltd, Indooroopilly, Qd.

Hatch, M.D.; Glasziou, K.T., 1963: Sugar Accumulation Cycle in Sugar Cane. II. Relationship of Invertase Activity to Sugar Content & Growth Rate in Storage Tissue of Plants Grown in Controlled Environments. Results are discussed in relation to the concept that the invertases contribute to the partitioning of the available carbohydrate from photosynthesis between sugar storage and growth. -Colon. Sugar Refin. Co. Ltd, Indooroopilly, Qd.