Field and saccharification performances of poplars severely downregulated in CAD1

Field and saccharification performances of poplars severely downregulated in CAD1

© 2022 The Authors. New Phytologist © 2022 New Phytologist Foundation.

Bibliographische Detailangaben
Veröffentlicht in:The New phytologist. - 1984. - 236(2022), 6 vom: 01. Dez., Seite 2075-2090
1. Verfasser: De Meester, Barbara (VerfasserIn)
Weitere Verfasser: Van Acker, Rebecca, Wouters, Marlies, Traversari, Silvia, Steenackers, Marijke, Neukermans, Jenny, Van Breusegem, Frank, Déjardin, Annabelle, Pilate, Gilles, Boerjan, Wout
Format: Online-Aufsatz
Sprache:English
Veröffentlicht: 2022
Zugriff auf das übergeordnete Werk:The New phytologist
Schlagworte:Journal Article Research Support, Non-U.S. Gov't CAD field trial lignin engineering poplar saccharification water content wood Lignin mehr... 9005-53-2 cinnamyl alcohol dehydrogenase EC 1.1.1.195 Alcohol Oxidoreductases EC 1.1.-
Beschreibung
Zusammenfassung:© 2022 The Authors. New Phytologist © 2022 New Phytologist Foundation.
Lignin is one of the main factors causing lignocellulosic biomass recalcitrance to enzymatic hydrolysis. Glasshouse-grown poplars severely downregulated for CINNAMYL ALCOHOL DEHYDROGENASE 1 (CAD1), the enzyme catalysing the last step in the monolignol-specific branch of lignin biosynthesis, have increased saccharification yields and normal growth. Here, we assess the performance of these hpCAD poplars in the field under short rotation coppice culture for two consecutive rotations of 1 yr and 3 yr. While 1-yr-old hpCAD wood had 10% less lignin, 3-yr-old hpCAD wood had wild-type lignin levels. Because of their altered cell wall composition, including elevated levels of cinnamaldehydes, both 1-yr-old and 3-yr-old hpCAD wood showed enhanced saccharification yields upon harsh alkaline pretreatments (up to +85% and +77%, respectively). In contrast with previous field trials with poplars less severely downregulated for CINNAMYL ALCOHOL DEHYDROGENASE (CAD), the hpCAD poplars displayed leaning phenotypes, early bud set, early flowering and yield penalties. Moreover, hpCAD wood had enlarged vessels, decreased wood density and reduced relative and free water contents. Our data show that the phenotypes of CAD-deficient poplars are strongly dependent on the environment and underpin the importance of field trials in translating basic research towards applications
Beschreibung:Date Completed 21.11.2022
Date Revised 14.12.2022
published: Print-Electronic
Citation Status MEDLINE
ISSN:1469-8137
DOI:10.1111/nph.18366