472 Effects of Low-temperature Storage on Carbohydrate Metabolism in Potato Tubers

NAD malic enzyme and the control of carbohydrate metabolism in potato tubers.

Potato (Solanum tuberosum) plants were transformed with a cDNA encoding the 59-kD subunit of the potato tuber NAD-dependent malic enzyme (NADME) in the antisense orientation. Measurements of the maximum catalytic activity of NADME in tubers revealed a range of reductions in the activity of this enzyme down to 40% of wild-type activity. There were no detrimental effects on plant growth or tuber ...

Effects of abscisic acid mannitol and temperature on invitro storage of potato germplasm

Effect of High Temperature on Plant Growth and Carbohydrate Metabolism in Potato.

This study was undertaken to determine the role of sucrose-metabolizing enzymes in altered carbohydrate partitioning caused by heat stress. Potato (Solanum tuberosum L.) genotypes characterized as susceptible and tolerant to heat stress were grown at 19/17[deg]C, and a subset was transferred to 31/29[deg]C. Data were obtained for plant growth and photosynthesis. Enzyme activity was determined f...

Change in content of sugars and free amino acids in potato tubers under short-term storage at low temperature and the effect on acrylamide level after frying.

Changes in the sugar and amino acid contents of potato tubers during short-term storage and the effect on the acrylamide level in chips after frying were investigated. The acrylamide content in chips began to increase after 3 days of storage at 2 degrees C in response to the increase of glucose and fructose contents in the tubers. There was strong correlation between the reducing sugar content ...

The Effect of Storage on the Amino Acids Composition in Potato Tubers

ČERNÁ, M., KRÁČMAR, S.: The eff ect of storage on the amino acids composition in potato tubers. Acta univ. agric. et silvic. Mendel. Brun., 2010, LVIII, No. 5, pp. 49–56 The aim of this study was to investigate the eff ect of storage duration on amino acids content in potato tubers. Tubers of six cultivars were stored for 16 weeks. Crude protein was determined by the Kjeldahl method. The amino ...