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Title: PdWND3A, a wood-associated NAC domain-containing protein, affects lignin biosynthesis and composition in Populus

Journal Article · · BMC Plant Biology
 [1];  [2];  [3];  [3];  [3];  [4];  [4];  [4];  [2];  [5];  [4]; ORCiD logo [4]
  1. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). BioEnergy Science Center (BESC)
  2. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). BioEnergy Science Center (BESC); Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Center for Bioenergy Innovation; Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). UT-Oak Ridge Institute for Biological Science
  3. ArborGen, Inc., Ridgeville, SC (United States)
  4. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). BioEnergy Science Center (BESC); Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Center for Bioenergy Innovation
  5. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). BioEnergy Science Center (BESC); Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Center for Bioenergy Innovation; Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). UT-Oak Ridge Institute for Biological Science; Univ. of Tennessee, Knoxville, TN (United States). Department of Chemical and Biomolecular Engineering & Department of Forestry, Wildlife, and Fisheries

Background: Plant secondary cell wall is a renewable feedstock for biofuels and biomaterials production. Arabidopsis VASCULAR-RELATED NAC DOMAIN (VND) has been demonstrated to be a key transcription factor regulating secondary cell wall biosynthesis. However, less is known about its role in the woody species. Results: Here we report the functional characterization of Populus deltoides WOOD-ASSOCIATED NAC DOMAIN protein 3 (PdWND3A), a sequence homolog of Arabidopsis VND4 and VND5 that are members of transcription factor networks regulating secondary cell wall biosynthesis. PdWND3A was expressed at higher level in the xylem than in other tissues. The stem tissues of transgenic P. deltoides overexpressing PdWND3A (OXPdWND3A) contained more vessel cells than that of wild-type plants. Furthermore, lignin content and lignin monomer syringyl and guaiacyl (S/G) ratio were higher in OXPdWND3A transgenic plants than in wild-type plants. Consistent with these observations, the expression of FERULATE 5-HYDROXYLASE1 (F5H1), encoding an enzyme involved in the biosynthesis of sinapyl alcohol (S unit monolignol), was elevated in OXPdWND3A transgenic plants. Saccharification analysis indicated that the rate of sugar release was reduced in the transgenic plants. In addition, OXPdWND3A transgenic plants produced lower amounts of biomass than wild-type plants. Conclusions: PdWND3A affects lignin biosynthesis and composition and negatively impacts sugar release and biomass production. PdWND3A affects lignin biosynthesis and composition and negatively impacts sugar release and biomass production.

Research Organization:
Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Biological and Environmental Research (BER); USDOE
Grant/Contract Number:
AC05-00OR22725
OSTI ID:
1618609
Alternate ID(s):
OSTI ID: 1626852; OSTI ID: 1761683
Journal Information:
BMC Plant Biology, Vol. 19, Issue 1; ISSN 1471-2229
Publisher:
BioMed CentralCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 44 works
Citation information provided by
Web of Science

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Lignin content in natural Populus variants affects sugar release journal March 2011
Syringyl lignin production in conifers: Proof of concept in a Pine tracheary element system journal April 2015
Nonlinear partial differential equations and applications: Visualization by comprehensive microarray analysis of gene expression programs during transdifferentiation of mesophyll cells into xylem cells journal November 2002
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Molecular control of wood formation in trees journal March 2015
Phenylpropanoid Biosynthesis journal January 2010
Multiple Classes of Transcription Factors Regulate the Expression of VASCULAR-RELATED NAC-DOMAIN7, a Master Switch of Xylem Vessel Differentiation journal September 2014
Transcription switches for protoxylem and metaxylem vessel formation journal August 2005
The Effects on Lignin Structure of Overexpression of Ferulate 5-Hydroxylase in Hybrid Poplar 1 journal April 2009
Functional Characterization of Poplar Wood-Associated NAC Domain Transcription Factors journal December 2009
VASCULAR-RELATED NAC-DOMAIN6 and VASCULAR-RELATED NAC-DOMAIN7 Effectively Induce Transdifferentiation into Xylem Vessel Elements under Control of an Induction System journal May 2010
CINNAMYL ALCOHOL DEHYDROGENASE-C and -D Are the Primary Genes Involved in Lignin Biosynthesis in the Floral Stem of Arabidopsis journal June 2005
The NAC Transcription Factors NST1 and NST2 of Arabidopsis Regulate Secondary Wall Thickenings and Are Required for Anther Dehiscence journal October 2005
The MYB46 Transcription Factor Is a Direct Target of SND1 and Regulates Secondary Wall Biosynthesis in Arabidopsis journal September 2007
MYB58 and MYB63 Are Transcriptional Activators of the Lignin Biosynthetic Pathway during Secondary Cell Wall Formation in Arabidopsis journal January 2009
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