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Title: Extending juvenility in grasses

Patent ·
OSTI ID:1351077

The present invention relates to compositions and methods for modulating the juvenile to adult developmental growth transition in plants, such as grasses (e.g. maize). In particular, the invention provides methods for enhancing agronomic properties in plants by modulating expression of GRMZM2G362718, GRMZM2G096016, or homologs thereof. Modulation of expression of one or more additional genes which affect juvenile to adult developmental growth transition such as Glossy15 or Cg1, in conjunction with such modulation of expression is also contemplated. Nucleic acid constructs for down-regulation of GRMZM2G362718 and/or GRMZM2G096016 are also contemplated, as are transgenic plants and products produced there from, that demonstrate altered, such as extended juvenile growth, and display associated phenotypes such as enhanced yield, improved digestibility, and increased disease resistance. Plants described herein may be used, for example, as improved forage or feed crops or in biofuel production.

Research Organization:
Wisconsin Alumni Research Foundation, Madison, WI (United States)
Sponsoring Organization:
USDOE
DOE Contract Number:
FC02-07ER64494
Assignee:
Wiconsin Alumni Research Foundation
Patent Number(s):
9,617,558
Application Number:
13/834,114
OSTI ID:
1351077
Resource Relation:
Patent File Date: 2013 Mar 15
Country of Publication:
United States
Language:
English

References (17)

Cell Wall Composition in Juvenile and Adult Leaves of Maize ( Zea mays L.)
  • Abedon, Bruce G.; Hatfield, Ronald D.; Tracy, William F.
  • Journal of Agricultural and Food Chemistry, Vol. 54, Issue 11, p. 3896-3900 https://doi.org/10.1021/jf052872w
journal May 2006
The Genetic Architecture of Maize Flowering Time journal August 2009
The heterochronic maize mutant Corngrass1 results from overexpression of a tandem microRNA journal March 2007
Overexpression of the maize Corngrass1 microRNA prevents flowering, improves digestibility, and increases starch content of switchgrass journal October 2011
A Robust, Simple Genotyping-by-Sequencing (GBS) Approach for High Diversity Species journal May 2011
Maize association population: a high-resolution platform for quantitative trait locus dissection journal November 2005
Maize (Zea mays L.) Genome Diversity as Revealed by RNA-Sequencing journal March 2012
Expanding the genetic map of maize with the intermated B73 × Mo17 (IBM) population journal January 2002
Glossy15, an APETALA2-like gene from maize that regulates leaf epidermal cell identity. journal December 1996
MicroRNA Gene Regulation Cascades During Early Stages of Plant Development journal October 2010
SGS3 and SGS2/SDE1/RDR6 are required for juvenile development and the production of trans-acting siRNAs in Arabidopsis journal September 2004
Divergent Recurrent Selection for Vegetative Phase Change and Effects on Agronomic Traits and Corn Borer Resistance journal January 2008
The B73 Maize Genome: Complexity, Diversity, and Dynamics journal November 2009
Genome-wide atlas of transcription during maize development journal March 2011
The Arabidopsis defense component EDM2 affects the floral transition in an FLC-dependent manner: EDM2 promotes the floral transition journal February 2010
Time to grow up: the temporal role of smallRNAs in plants journal October 2005
The effect of the floral repressor FLC on the timing and progression of vegetative phase change in Arabidopsis journal January 2011

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