Mutation in Brachypodium caffeic acid O-methyltransferase 6 alters stem and grain lignins and improves straw saccharification without deteriorating grain quality

Mutation in Brachypodium caffeic acid O-methyltransferase 6 alters stem and grain lignins and improves straw saccharification without deteriorating grain quality

© The Author 2015. Published by Oxford University Press on behalf of the Society for Experimental Biology.

Détails bibliographiques
Publié dans:Journal of experimental botany. - 1985. - 67(2016), 1 vom: 01. Jan., Seite 227-37
Auteur principal: Ho-Yue-Kuang, Séverine (Auteur)
Autres auteurs: Alvarado, Camille, Antelme, Sébastien, Bouchet, Brigitte, Cézard, Laurent, Le Bris, Philippe, Legée, Frédéric, Maia-Grondard, Alessandra, Yoshinaga, Arata, Saulnier, Luc, Guillon, Fabienne, Sibout, Richard, Lapierre, Catherine, Chateigner-Boutin, Anne-Laure
Format: Article en ligne
Langue:English
Publié: 2016
Accès à la collection:Journal of experimental botany
Sujets:Journal Article Research Support, Non-U.S. Gov't Brachypodium distachyon COMT ferulic acid grains lignins para-coumaric acid straw saccharification. Biofuels plus... Phenols Plant Proteins lignocellulose 11132-73-3 Lignin 9005-53-2 Methyltransferases EC 2.1.1.- caffeate O-methyltransferase EC 2.1.1.68
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520 |a © The Author 2015. Published by Oxford University Press on behalf of the Society for Experimental Biology. 
520 |a Cereal crop by-products are a promising source of renewable raw material for the production of biofuel from lignocellulose. However, their enzymatic conversion to fermentable sugars is detrimentally affected by lignins. Here the characterization of the Brachypodium Bd5139 mutant provided with a single nucleotide mutation in the caffeic acid O-methyltransferase BdCOMT6 gene is reported. This BdCOMT6-deficient mutant displayed a moderately altered lignification in mature stems. The lignin-related BdCOMT6 gene was also found to be expressed in grains, and the alterations of Bd5139 grain lignins were found to mirror nicely those evidenced in stem lignins. The Bd5139 grains displayed similar size and composition to the control. Complementation experiments carried out by introducing the mutated gene into the AtCOMT1-deficient Arabidopsis mutant demonstrated that the mutated BdCOMT6 protein was still functional. Such a moderate down-regulation of lignin-related COMT enzyme reduced the straw recalcitrance to saccharification, without compromising the vegetative or reproductive development of the plant 
650 4 |a Journal Article 
650 4 |a Research Support, Non-U.S. Gov't 
650 4 |a Brachypodium distachyon 
650 4 |a COMT 
650 4 |a ferulic acid 
650 4 |a grains 
650 4 |a lignins 
650 4 |a para-coumaric acid 
650 4 |a straw saccharification. 
650 7 |a Biofuels  |2 NLM 
650 7 |a Phenols  |2 NLM 
650 7 |a Plant Proteins  |2 NLM 
650 7 |a lignocellulose  |2 NLM 
650 7 |a 11132-73-3  |2 NLM 
650 7 |a Lignin  |2 NLM 
650 7 |a 9005-53-2  |2 NLM 
650 7 |a Methyltransferases  |2 NLM 
650 7 |a EC 2.1.1.-  |2 NLM 
650 7 |a caffeate O-methyltransferase  |2 NLM 
650 7 |a EC 2.1.1.68  |2 NLM 
700 1 |a Alvarado, Camille  |e verfasserin  |4 aut 
700 1 |a Antelme, Sébastien  |e verfasserin  |4 aut 
700 1 |a Bouchet, Brigitte  |e verfasserin  |4 aut 
700 1 |a Cézard, Laurent  |e verfasserin  |4 aut 
700 1 |a Le Bris, Philippe  |e verfasserin  |4 aut 
700 1 |a Legée, Frédéric  |e verfasserin  |4 aut 
700 1 |a Maia-Grondard, Alessandra  |e verfasserin  |4 aut 
700 1 |a Yoshinaga, Arata  |e verfasserin  |4 aut 
700 1 |a Saulnier, Luc  |e verfasserin  |4 aut 
700 1 |a Guillon, Fabienne  |e verfasserin  |4 aut 
700 1 |a Sibout, Richard  |e verfasserin  |4 aut 
700 1 |a Lapierre, Catherine  |e verfasserin  |4 aut 
700 1 |a Chateigner-Boutin, Anne-Laure  |e verfasserin  |4 aut 
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