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Title: <Original>O-Methyltransferase as a Tool to Evaluate the Lignin Evolution
Authors: KURODA, Hiroyuki
HIGUCHI, Takayoshi
Issue Date: 15-Mar-1982
Publisher: Wood Research Institute, Kyoto University
Journal title: Wood research : bulletin of the Wood Research Institute Kyoto University
Volume: 68
Start page: 1
End page: 7
Abstract: The ratios of sinapate (SA)- to ferulate (FA)- formation (SA/FA ratio) by O-methyltransferases (OMTs) were surveyed over fifty plant species of 43 families. The OMTs are roughly classified into three groups by using the SA/FA ratio, i.e. gymnosperm-, angiosperm- and grass-types. OMTs in gymnosperm only catalyze FA-formation whereas angiosperm ones catalyze both FA- and SA-formation. Monocotyledons and herbaceous plants showed the apparent ratios which lay between typical gymnosperm- and angiosperm-ones. These substrate specificities well explain why gymnosperm lignin contains almost entirely guaiacyl lignin whereas angiosperm one contains both guaiacyl and syringyl lignins. A few exceptional cases were found in Cupressaceae-, Trochodendron-, and grass-OMTs, which were discussed in relation to lignin biosynthesis. The ratios of the OMT activities are discussed with respect to the usefulness as an evolutional marker for analyzing lignin evolution.
Description: この論文は国立情報学研究所の学術雑誌公開支援事業により電子化されました。
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