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| Content Provider | World Health Organization (WHO)-Global Index Medicus |
|---|---|
| Author | Foster, Clifton E. Leplé, Jean-charles Ivens, Bart Van Acker, Rebecca Storme, Véronique Légée, Frédéric Pilate, Gilles Soetaert, Wim Aerts, Dirk Ralph, John Goeminne, Geert Lapierre, Catherine Santoro, Nicholas Van Montagu, Marc C. E. Boerjan, Wout Piens, Kathleen |
| Spatial Coverage | France |
| Description | Author Affiliation: Van Acker R ( Department of Plant Systems Biology, VIB, 9052 Ghent, Belgium.); |
| Abstract | Lignin is one of the main factors determining recalcitrance to enzymatic processing of lignocellulosic biomass. Poplars (Populus tremula x Populus alba) down-regulated for cinnamoyl-CoA reductase (CCR), the enzyme catalyzing the first step in the monolignol-specific branch of the lignin biosynthetic pathway, were grown in field trials in Belgium and France under short-rotation coppice culture. Wood samples were classified according to the intensity of the red xylem coloration typically associated with CCR down-regulation. Saccharification assays under different pretreatment conditions (none, two alkaline, and one acid pretreatment) and simultaneous saccharification and fermentation assays showed that wood from the most affected transgenic trees had up to 161% increased ethanol yield. Fermentations of combined material from the complete set of 20-mo-old CCR-down-regulated trees, including bark and less efficiently down-regulated trees, still yielded â ¼ 20% more ethanol on a weight basis. However, strong down-regulation of CCR also affected biomass yield. We conclude that CCR down-regulation may become a successful strategy to improve biomass processing if the variability in down-regulation and the yield penalty can be overcome. |
| ISSN | 00278424 |
| e-ISSN | 10916490 |
| Journal | Proceedings of the National Academy of Sciences of the United States of America |
| Issue Number | 2 |
| Volume Number | 111 |
| Language | English |
| Publisher | National Academy of Sciences |
| Publisher Date | 2014-01-01 |
| Publisher Place | United States |
| Access Restriction | Open |
| Subject Keyword | Aldehyde Oxidoreductases Deficiency Biofuels Ethanol Metabolism Lignin Populus Belgium Biomass Fermentation Plants, Genetically Modified Genetics Research Support, Non-U.S. Gov't Research Support, U.S. Gov't, Non-P.H.S. Multidisciplinary |
| Content Type | Text |
| Resource Type | Article |
| Subject | Multidisciplinary |
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