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Title: Transcription factors for modification of lignin content in plants

The invention provides methods for modifying lignin, cellulose, xylan, and hemicellulose content in plants, and for achieving ectopic lignification and, for instance, secondary cell wall synthesis in pith cells, by altered regulation of a WRKY transcription factor. Nucleic acid constructs for altered WRKY-TF expression are described. Transgenic plants are provided that comprise modified pith cell walls, and lignin, cellulose, and hemicellulose content. Plants described herein may be used, for example, as improved biofuel feedstock and as highly digestible forage crops.
Inventors:
; ;
Issue Date:
OSTI Identifier:
1183456
Assignee:
The Samuel Roberts Noble Foundation, Inc. (Ardmore, OK) CHO
Patent Number(s):
9,045,549
Application Number:
13/288,677
Contract Number:
PS02-06ER64304
Research Org:
The Samuel Roberts Noble Foundation, Inc., Ardmore, OK (United States)
Sponsoring Org:
USDOE
Country of Publication:
United States
Language:
English
Subject:
59 BASIC BIOLOGICAL SCIENCES; 09 BIOMASS FUELS

Works referenced in this record:

The WRKY superfamily of plant transcription factors
journal, May 2000

Ectopic expression of MYB46 identifies transcriptional regulatory genes involved in secondary wall biosynthesis in Arabidopsis
journal, November 2009

Mutation of WRKY transcription factors initiates pith secondary wall formation and increases stem biomass in dicotyledonous plants
journal, December 2010
  • Wang, H.; Avci, U.; Nakashima, J.
  • Proceedings of the National Academy of Sciences, Vol. 107, Issue 51, p. 22338-22343
  • DOI: 10.1073/pnas.1016436107

Syringyl lignin biosynthesis is directly regulated by a secondary cell wall master switch
journal, July 2010
  • Zhao, Q.; Wang, H.; Yin, Y.
  • Proceedings of the National Academy of Sciences, Vol. 107, Issue 32, p. 14496-14501
  • DOI: 10.1073/pnas.1009170107