Biotechnology for Biofuels | |
Engineering of plants with improved properties as biofuels feedstocks by vessel-specific complementation of xylan biosynthesis mutants | |
关键词: Xylan; Irregular xylem mutant; Secondary cell wall; VND6; VND7; Transcription factors; Biofuels; Pentoses; Saccharification; Lignin; | |
DOI : 10.1186/1754-6834-5-84 | |
来源: DOAJ |
【 摘 要 】
Abstract
Background
Cost-efficient generation of second-generation biofuels requires plant biomass that can easily be degraded into sugars and further fermented into fuels. However, lignocellulosic biomass is inherently recalcitrant toward deconstruction technologies due to the abundant lignin and cross-linked hemicelluloses. Furthermore, lignocellulosic biomass has a high content of pentoses, which are more difficult to ferment into fuels than hexoses. Engineered plants with decreased amounts of xylan in their secondary walls have the potential to render plant biomass a more desirable feedstock for biofuel production.
Results
Xylan is the major non-cellulosic polysaccharide in secondary cell walls, and the xylan deficient
Conclusions
Spatial and temporal deposition of xylan in the secondary cell wall of Arabidopsis can be manipulated by using the promoter regions of vessel-specific genes to express xylan biosynthetic genes. The expression of xylan specifically in the xylem vessels is sufficient to complement the
【 授权许可】
Unknown