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Title: Field-grown miR156 transgenic switchgrass reproduction, yield, global gene expression analysis, and bioconfinement

Journal Article · · Biotechnology for Biofuels

Genetic engineering has been effective in altering cell walls for biofuel production in the bioenergy crop, switchgrass (Panicum virgatum). However, regulatory issues arising from gene flow may prevent commercialization of engineered switchgrass in the eastern United States where the species is native. And, depending on its expression level, microRNA156 (miR156) can reduce, delay, or eliminate flowering, which may serve to decrease transgene flow. Here, in this unique field study of transgenic switchgrass that was permitted to flower, two low (T14 and T35) and two medium (T27 and T37) miR156-overexpressing 'Alamo' lines with the transgene under the control of the constitutive maize (Zea mays) ubiquitin 1 promoter, along with nontransgenic control plants, were grown in eastern Tennessee over two seasons.

Research Organization:
National Renewable Energy Laboratory (NREL), Golden, CO (United States)
Sponsoring Organization:
USDOE; USDOE Office of Science (SC), Office of Biological and Environmental Research; United States Department of Agriculture (USDA)
Grant/Contract Number:
PS02-06ER64304; AC36-08GO28308
OSTI ID:
1618700
Alternate ID(s):
OSTI ID: 1414068
Report Number(s):
NREL/JA-2700-70667; 255; PII: 939
Journal Information:
Biotechnology for Biofuels, Journal Name: Biotechnology for Biofuels Vol. 10 Journal Issue: 1; ISSN 1754-6834
Publisher:
Springer Science + Business MediaCopyright Statement
Country of Publication:
Netherlands
Language:
English
Citation Metrics:
Cited by: 9 works
Citation information provided by
Web of Science

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Cited By (4)

Small but powerful: function of microRNAs in plant development journal January 2018
SPL 7 and SPL 8 represent a novel flowering regulation mechanism in switchgrass journal February 2019
Switchgrass (Panicum virgatum L.) promoters for green tissue-specific expression of the MYB4 transcription factor for reduced-recalcitrance transgenic switchgrass journal April 2018
Ambient Temperature-Responsive Mechanisms Coordinate Regulation of Flowering Time journal October 2018


Figures / Tables (8)