Simultaneous boosting of source and sink capacities doubles tuber starch yield of potato plants
Jonik C, Sonnewald U, Hajirezaei MR, Fluegge UI, Ludewig F (2012)
Publication Status: Published
Publication Type: Journal article
Publication year: 2012
Journal
Publisher: WILEY-BLACKWELL
Book Volume: 10
Pages Range: 1088-1098
Journal Issue: 9
DOI: 10.1111/j.1467-7652.2012.00736.x
Abstract
An important goal in biotechnological research is to improve the yield of crop plants. Here, we genetically modified simultaneously source and sink capacities in potato (Solanum tuberosum cv. Desiree) plants to improve starch yield. Source capacity was increased by mesophyll-specific overexpression of a pyrophosphatase or, alternatively, by antisense expression of the ADP-glucose pyrophosphorylase in leaves. Both approaches make use of re-routing photoassimilates to sink organs at the expense of leaf starch accumulation. Simultaneous increase in sink capacity was accomplished by overexpression of two plastidic metabolite translocators, that is, a glucose 6-phosphate/phosphate translocator and an adenylate translocator in tubers. Employing such a pull approach, we have previously shown that potato starch content and yield can be increased when sink strength is elevated. In the current biotechnological approach, we successfully enhanced source and sink capacities by a combination of pull and push approaches using two different attempts. A doubling in tuber starch yield was achieved. This successful approach might be transferable to other crop plants in the future.
Authors with CRIS profile
Involved external institutions
Universität zu Köln
Germany (DE)
Leibniz-Institut für Pflanzengenetik und Kulturpflanzenforschung (IPK) / Leibniz Institute of Plant Genetics and Crop Plant Research
Germany (DE)
Germany (DE)
Leibniz-Institut für Pflanzengenetik und Kulturpflanzenforschung (IPK) / Leibniz Institute of Plant Genetics and Crop Plant Research
Germany (DE)
How to cite
APA:
Jonik, C., Sonnewald, U., Hajirezaei, M.-R., Fluegge, U.-I., & Ludewig, F. (2012). Simultaneous boosting of source and sink capacities doubles tuber starch yield of potato plants. Plant Biotechnology Journal, 10(9), 1088-1098. https://doi.org/10.1111/j.1467-7652.2012.00736.x
MLA:
Jonik, Claudia, et al. "Simultaneous boosting of source and sink capacities doubles tuber starch yield of potato plants." Plant Biotechnology Journal 10.9 (2012): 1088-1098.
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