Plant Biotechnology
Online ISSN : 1347-6114
Print ISSN : 1342-4580
ISSN-L : 1342-4580
Original Paper
Distinct deposition of ester-linked ferulic and p-coumaric acids to the cell wall of developing sorghum internodes
Kanna Sato-Izawa Miyuki ItoNuoendagulaShinya KajitaShin-ichi NakamuraTakashi MatsumotoHiroshi Ezura
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Supplementary material

2020 Volume 37 Issue 1 Pages 15-23


Sorghum is important as a cereal crop, and also as livestock feed and a renewable energy crop because it produces a large amount of biomass. In grass plants like sorghum, hydroxycinnamates such as ferulic acids (FA) and p-coumaric acids (pCA) are characteristically ester-linked to the cell wall, and are believed to affect cell wall digestibility. Genetic manipulation of the esterification of FA and pCA to the cell wall appears to be one of the solutions to increase the digestibility of the cell wall so as to utilize sorghum biomass effectively. In this study, we measured esterified FA and pCA in each stage of internode elongation and determined the accumulation pattern of each hydroxycinnamate. The results revealed that FA were mainly accumulated during the cell elongation stage, and that pCA accumulation was increased after the cell elongation stage. Furthermore, 6 of the 12 sorghum BAHD acyltransferase genes were significantly expressed in the elongating internodes, suggesting that these genes might be involved in the feruloylation and/or p-coumaroylation of the cell wall in sorghum internodes.

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© 2020 The Japanese Society for Plant Cell and Molecular Biology
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