Oil Accumulation in Transgenic Potato Tubers Alters Starch Quality and Nutritional Profile
| العنوان: | Oil Accumulation in Transgenic Potato Tubers Alters Starch Quality and Nutritional Profile |
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| المؤلفون: | Nicolas Szydlowski, Jean-Philippe Ral, Shoko Okada, Jenifer Pritchard, Qing Liu, Surinder P. Singh, Dina Yulia, Madeline Mitchell, Oscar Larroque, Filomena Pettolino |
| المساهمون: | Commonwealth Scientific and Industrial Research Organisation [Canberra] (CSIRO), Miniaturisation pour la Synthèse, l’Analyse et la Protéomique - UAR 3290 (MSAP), Université de Lille-Centre National de la Recherche Scientifique (CNRS), Miniaturisation pour la Synthèse, l’Analyse et la Protéomique - USR 3290 (MSAP), Institut de Chimie du CNRS (INC)-Université de Lille-Centre National de la Recherche Scientifique (CNRS) |
| المصدر: | Frontiers in Plant Science Frontiers in Plant Science, Frontiers, 2017, 8, ⟨10.3389/fpls.2017.00554⟩ Frontiers in Plant Science, 2017, 8, ⟨10.3389/fpls.2017.00554⟩ |
| بيانات النشر: | Frontiers Media SA, 2017. |
| سنة النشر: | 2017 |
| مصطلحات موضوعية: | 0106 biological sciences, 0301 basic medicine, Starch, [SDV]Life Sciences [q-bio], Plant Science, triacyglycerol, 01 natural sciences, Metabolic engineering, 03 medical and health sciences, chemistry.chemical_compound, Dry weight, Amylose, [SDV.BBM]Life Sciences [q-bio]/Biochemistry, Molecular Biology, Food science, [SDV.BBM.BC]Life Sciences [q-bio]/Biochemistry, Molecular Biology/Biochemistry [q-bio.BM], Animal nutrition, Sugar, Original Research, 2. Zero hunger, chemistry.chemical_classification, starch, food and beverages, Phosphate, Amino acid, 030104 developmental biology, chemistry, Agronomy, nitrogen partitioning, potato, carbon partitioning, metabolic engineering, 010606 plant biology & botany |
| الوصف: | International audience; Plant storage compounds such as starch and lipids are important for human and animal nutrition as well as industry. There is interest in diverting some of the carbon stored in starch-rich organs (leaves, tubers, and cereal grains) into lipids in order to improve the energy density or nutritional properties of crops as well as providing new sources of feedstocks for food and manufacturing. Previously, we generated transgenic potato plants that accumulate up to 3.3% triacylglycerol (TAG) by dry weight in the tubers, which also led to changes in starch content, starch granule morphology and soluble sugar content. The aim of this study was to investigate how TAG accumulation affects the nutritional and processing properties of high oil potatoes with a particular focus on starch structure, physical and chemical properties. Overall, TAG accumulation was correlated with increased energy density, total nitrogen, amino acids, organic acids and inorganic phosphate, which could be of potential nutritional benefit. However, TAG accumulation had negative effects on starch quality as well as quantity. Starch from high oil potatoes had lower amylose and phosphate content, reduced peak viscosity and higher gelatinization temperature. Interestingly, starch pasting properties were disproportionately affected in lines accumulating the highest levels of TAG (>2.5%) compared to those accumulating only moderate levels (0.2-1.6%). These results indicate that optimized engineering of specialized crops for food, feed, fuel and chemical industries requires careful selection of traits, and an appropriate level of transgene expression, as well as a better understanding of starch structure and carbon partitioning in plant storage organs. |
| تدمد: | 1664-462X |
| الوصول الحر: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4b2a8dc795df51147a283e3b2626c0dbTest https://doi.org/10.3389/fpls.2017.00554Test |
| حقوق: | OPEN |
| رقم الانضمام: | edsair.doi.dedup.....4b2a8dc795df51147a283e3b2626c0db |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 1664462X |
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