Improving Wood Properties for Wood Utilization through Multi-Omics Integration in Lignin Biosynthesis

Todd Shollenberger, Mark Davis, Jack Wang, Megan Matthews, Cranos Williams, Rui Shi, Chenmin Yang, Sermsawat Tunlaya-Anukit, Hsi-Chuan Chen, Quanzi Li, Jie Liu, Chien-Yuan Lin, Punith Naik, Ying-Hsuan Sun, Philip Loziuk, Ting-Feng Yeh, Hoon Kim, Christopher Shuford, Jina Song, Zachary MillerYung-Yun Huang, Charles Edmunds, Baoguang Liu, Yi Sun, Ying-Chung Lin, Wei Li, Hao Chen, Ilona Peszlen, Joel Ducoste, John Ralph, Hou-Min Chang, David Muddiman, Chris Smith, Fikret Isik, Ronald Sederoff, Vincent Chiang, Erica Gjersing

Research output: Contribution to journalArticlepeer-review

185 Scopus Citations

Abstract

A multi-omics quantitative integrative analysis of lignin biosynthesis can advance the strategic engineering of wood for timber, pulp, and biofuels. Lignin is polymerized from three monomers (monolignols) produced by a grid-like pathway. The pathway in wood formation of Populus trichocarpa has at least 21 genes, encoding enzymes that mediate 37 reactions on 24 metabolites, leading to lignin and affecting wood properties. We perturb these 21 pathway genes and integrate transcriptomic, proteomic, fluxomic and phenomic data from 221 lines selected from ~2000 transgenics (6-month-old). The integrative analysis estimates how changing expression of pathway gene or gene combination affects protein abundance, metabolic-flux, metabolite concentrations, and 25 wood traits, including lignin, tree-growth, density, strength, and saccharification. The analysis then predicts improvements in any of these 25 traits individually or in combinations, through engineering expression of specific monolignol genes. The analysis may lead to greater understanding of other pathways for improved growth and adaptation.

Original languageAmerican English
Article number1579
Number of pages16
JournalNature Communications
Volume9
Issue number1
DOIs
StatePublished - 1 Dec 2018

Bibliographical note

Publisher Copyright:
© 2018 The Author(s).

NREL Publication Number

  • NREL/JA-2700-71418

Keywords

  • genetic engineering
  • molecular engineering
  • secondary metabolism

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