Increase in phosphorylase activity during cold-induced sugar accumulation in potato tubers

1993 ◽  
Vol 36 (3) ◽  
pp. 205-217 ◽  
Author(s):  
Pieternel A. M. Claassen ◽  
Miriam A. W. Budde ◽  
Martha H. Van Calker
Keyword(s):  
Sugar Accumulation ◽  
Potato Tubers ◽  
Phosphorylase Activity

scholarly journals Transgene coding of a key enzyme of the glycolytic pathway helps to decrease sugar content in potato tubers

2012 ◽  
Vol 48 (No. 1) ◽  
pp. 42-45 ◽  
Author(s):  
O. Navrátil ◽  
P. Bucher ◽  
J. Vacek
Keyword(s):  
Cold Storage ◽  
Reducing Sugars ◽  
Sugar Content ◽  
Field Trials ◽  
Sugar Accumulation ◽  
Parental Genotype ◽  
Potato Tubers ◽  
Bacterial Gene ◽  
Transgenic Lines ◽  
Key Enzyme

Cold-stored potato tubers gradually accumulate reducing sugars. A proposed reason is a cold-induced blocking of glycolysis. The introduction and expression of the bacterial gene Lbpfk coding for cold-tolerant phosphofructokinase might counteract this effect. We have recently introduced this gene into several Czech potato cultivars. The obtained transgenic lines were then tested for three years in field trials. In 17 transgenic lines derived from two of the cultivars we have investigated the accumulation of reducing sugars during two and four months of cold storage. Although in all transgenic lines the sugar content still increased between the 2<sup>nd</sup> and the 4<sup>th</sup> month of cold-storage, the level of reducing sugars was in all transgenic lines after both two and four months of cold storage considerably lower than in the original cultivars. The extent of sugar accumulation was also influenced by the parental genotype. No significant differences in sugar accumulation were observed between the transgenic lines from the same parent.&nbsp;

Sugar accumulation in chemically debudded potato tubers during cold storage

1977 ◽  
Vol 16 (10) ◽  
pp. 1603-1604 ◽  
Author(s):  
Jacob Amir ◽  
Varda Kahn ◽  
Miriam Unterman
Keyword(s):  
Cold Storage ◽  
Sugar Accumulation ◽  
Potato Tubers

Phosphofructokinase in Relation to Sugar Accumulation in Cold-Stored Potato Tubers

1991 ◽  
Vol 138 (2) ◽  
pp. 129-135 ◽  
Author(s):  
G.M.M. Bredemeijer ◽  
H.C.J. Burg ◽  
P.A.M. Claassen ◽  
W.J. Stiekema
Keyword(s):  
Sugar Accumulation ◽  
Potato Tubers

Respiration, ATP level, and sugar accumulation in potato tubers during storage at 4°

1977 ◽  
Vol 16 (10) ◽  
pp. 1495-1498 ◽  
Author(s):  
Jacob Amir ◽  
Varda Kahn ◽  
Miriam Unterman
Keyword(s):  
Sugar Accumulation ◽  
Potato Tubers ◽  
Atp Level
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