期刊
PLANT PHYSIOLOGY
卷 177, 期 2, 页码 513-521出版社
OXFORD UNIV PRESS INC
DOI: 10.1104/pp.18.00298
关键词
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资金
- U.S. Dairy Forage Research Center, USDA Agricultural Research Service, via U.S. Department of Energy Biosciences Program [58-3655-8-19f, DF-A102-06ER64299]
- U.S. Department of Energy Great Lakes Bioenergy Research Center (DOE Office of Science) [BER DE-FC02-07ER64494]
- University of Auckland
Commelinid monocotyledons are 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 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 other than Poaceae, including species from all four commelinid monocotyledon orders (Poales, Zingiberales, Commelinales, and Arecales). We showed that, as in the Poaceae, lignin-linked p-coumarate occurs exclusively on the hydroxyl group on the gamma-carbon of lignin unit side chains, mostly on syringyl 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-coenzyme A: monolignol transferases.
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