Commelinid Monocotyledon Lignins Are Acylated by p-Coumarate
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- Department of Energy Great Lakes Bioenergy Research Center, Wisconsin Energy Institute, University of Wisconsin, Madison, Wisconsin 53726, Department of Biochemistry, University of Wisconsin, Madison, Wisconsin 53706
- School of Biological Sciences, University of Auckland, Auckland 1142, New Zealand, School of Chemical Sciences, University of Auckland, Auckland 1142, New Zealand
- School of Chemical Sciences, University of Auckland, Auckland 1142, New Zealand
- School of Biological Sciences, University of Auckland, Auckland 1142, New Zealand
The commelinid monocotyledons make up a monophyletic clade differentiated from other monocotyledons by the presence of cell-wall-bound ferulate and p-coumarate. The Poaceae or grass family is a member of this group and it is known that most of the p-coumarate in the cell walls of this family acylates lignin. Here, we isolated and examined lignified cell-wall preparations from 10 species of commelinid monocotyledons from nine families, outside the Poaceae, including species from all four commelinid monocotyledon orders Poales, Zingiberales, Commelinales, and Arecales. Here, we showed that, as in the Poaceae, lignin-linked p-coumarate occurs exclusively on the hydroxyl group on the γ-carbon sidechains of lignin units, mostly on syringyl (S) units. Although the mechanism of acylation has not been studied directly in these species, it is likely to be similar to that in the Poaceae and involve BAHD acyl-CoA: monolignol transferases.
- Research Organization:
- Great Lakes Bioenergy Research Center (GLBRC), Madison, WI (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC), Biological and Environmental Research (BER)
- Grant/Contract Number:
- SC0018409; FC02-07ER64494; DF-A102-06ER64299
- OSTI ID:
- 1454340
- Alternate ID(s):
- OSTI ID: 1459433
- Journal Information:
- Plant Physiology (Bethesda), Journal Name: Plant Physiology (Bethesda) Vol. 177 Journal Issue: 2; ISSN 0032-0889
- Publisher:
- American Society of Plant BiologistsCopyright Statement
- Country of Publication:
- United States
- Language:
- English
Web of Science
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