期刊
CURRENT OPINION IN BIOTECHNOLOGY
卷 56, 期 -, 页码 97-104出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.copbio.2018.10.010
关键词
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资金
- BBSRC [BB/M015432/1]
- Novozymes [BB/M015432/1]
- Leverhulme Trust Centre for Natural Material innovation
- OpenPlant Synthetic Biology Research Centre [BB/L014130/1]
- BBSRC [BB/L014130/1] Funding Source: UKRI
The plant secondary cell wall is a complex structure composed of polysaccharides and lignin, and is a key evolutionary innovation of vascular land plants. Although cell wall composition is well understood, the cross-linking of the different polymers is only now yielding to investigation. Cross linking between hemicelluloses and lignin occurs via two different mechanisms: incorporation into lignin by radical coupling of ferulate substitutions on xylan in commelinid monocots, and incorporation of hemicellulosic glycosyl residues by re-aromatisation of lignification intermediates. Recent genetic evidence indicates that hemicellulose:lignin cross-linking has a substantial impact on plant cell wall recalcitrance. Engineering plant biomass with modified frequencies of cross-links will have significant impacts on biomass utilisation.
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