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Title: Transcription factors for modification of lignin content in plants

Patent ·
OSTI ID:1183456
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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.

Research Organization:
The Samuel Roberts Noble Foundation, Inc., Ardmore, OK (United States)
Sponsoring Organization:
USDOE
DOE Contract Number:
PS02-06ER64304
Assignee:
The Samuel Roberts Noble Foundation, Inc. (Ardmore, OK)
Patent Number(s):
9,045,549
Application Number:
13/288,677
OSTI ID:
1183456
Country of Publication:
United States
Language:
English

References (14)

Nucleic acid molecules and other molecules associated with transcription in plants and uses thereof for plant improvement patent-application September 2008
The Role of WRKY Transcription Factors in Plant Immunity: Figure 1. journal May 2009
The Arabidopsis Mutant cev1 Links Cell Wall Signaling to Jasmonate and Ethylene Responses journal July 2002
The grapevine transcription factor WRKY2 influences the lignin pathway and xylem development in tobacco journal November 2009
Ectopic expression of MYB46 identifies transcriptional regulatory genes involved in secondary wall biosynthesis in Arabidopsis journal November 2009
Overexpression of VvWRKY2 in tobacco enhances broad resistance to necrotrophic fungal pathogens journal November 2007
Elicitor-induced transcription factors for metabolic reprogramming of secondary metabolism in Medicago truncatula journal January 2008
Mutation of WRKY transcription factors initiates pith secondary wall formation and increases stem biomass in dicotyledonous plants journal December 2010
Overexpression of rice WRKY89 enhances ultraviolet B tolerance and disease resistance in rice plants journal October 2007
NAC domain function and transcriptional control of a secondary cell wall master switch: NST1 function and regulation journal October 2011
On–Off Switches for Secondary Cell Wall Biosynthesis journal March 2012
Syringyl lignin biosynthesis is directly regulated by a secondary cell wall master switch journal July 2010
An NAC transcription factor orchestrates multiple features of cell wall development in Medicago truncatula: Medicago NST gene journal April 2010
A Battery of Transcription Factors Involved in the Regulation of Secondary Cell Wall Biosynthesis in Arabidopsis journal October 2008

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59 BASIC BIOLOGICAL SCIENCES
09 BIOMASS FUELS