Abstract
The role of sucrose cleavage in determining sink strength in potato was investigated by generating transgenic potato plants that expressed a yeast invertase in either the cytosol or apoplast of tubers. Cytosolic localization gave rise to a reduction in tuber size and an increase in tuber number per plant whereas apoplastic targeting led to an increase in tuber size and a decrease in tuber number per plant. Sink organ size can be manipulated through modification of sucrose metabolism.
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Sonnewald, U., Hajirezaei, MR., Kossmann, J. et al. Increased potato tuber size resulting from apoplastic expression of a yeast invertase. Nat Biotechnol 15, 794–797 (1997). https://doi.org/10.1038/nbt0897-794
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DOI: https://doi.org/10.1038/nbt0897-794