Ectopic expression of a tobacco invertase inhibitor homolog prevents cold-induced sweetening of potato tubers.
basic_science · Level V
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Abstract
We have transformed potato with Nt-inhh cDNA, encoding a putative vacuolar homolog of a tobacco cell wall invertase inhibitor, under the control of the CaMV 35S promoter. In transgenic tubers, cold-induced hexose accumulation was reduced by up to 75%, without any effect on potato tuber yield. Processing quality of tubers was greatly improved without changing starch quantity or quality, an important prerequisite for the biotechnological use of Nt-inhh for potato transformation.
Medical subject headings
- Enzyme Inhibitors
- Glycoside Hydrolases
- Hexoses
- Plant Proteins
- Plants, Toxic
- Solanum tuberosum
- Nicotiana