NMR evidence for benzodioxane structures resulting from incorporation of 5-hydroxyconiferyl alcohol into Lignins of O-methyltransferase-deficient poplars.
Benzodioxane structures are produced in lignins of transgenic poplar plants deficient in COMT, anO-methyltransferase required to produce lignin syringyl units. They result from incorporation of 5-hydroxyconiferyl alcohol into the monomer supply and confirm that phenols other than the three traditional monolignols can be integrated into plant lignins.
Ralph
J
J
U.S. Dairy Forage Research Center, Agricultural Research Service, U.S. Department of Agriculture, Madison, Wisconsin 53706, USA. jralph@facstaff.wisc.edu
Lapierre
C
C
Lu
F
F
Marita
J M
JM
Pilate
G
G
Van Doorsselaere
J
J
Boerjan
W
W
Jouanin
L
L
D004146:Dioxanes / Q000737:chemistry; D008031:Lignin / Q000737:chemistry* / Q000378:metabolism*; D009682:Magnetic Resonance Spectroscopy; D008780:Methyltransferases / Q000172:deficiency* / Q000235:genetics; D010636:Phenols / Q000378:metabolism; D030821:Plants, Genetically Modified; D014197:Trees / Q000201:enzymology* / Q000235:genetics
D004146:Dioxanes; D010636:Phenols; D008031:Lignin; C010559:coniferyl alcohol; D008780:Methyltransferases; C019608:caffeate O-methyltransferase