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Categories: biotechnology & health, environment

BSA 11-03: Modification of Lignin Content of Plant Cell Walls

BNL Reference Number: BSA 11-03

Patent Status: Application Number 20120117694 was published on May 10, 2012

Summary

Arabidopsis carrying modified O-methyltransferase genes for reduced lignin content shows no adverse effects on growth.

The use of woody biomass for the energy-effective production of biofuels is challenged by the difficulties encountered in breaking down lignin. This technology uses modified (iso)-eugenol methyltransferases to reduce the lignin content and cross-linking in plant cell walls. Its adaptation to biofuel production may lead to more effective use of woody biomass.

Description

Non-native lignin precursors are generated in which the para-position of monolignols is O-methylated, directing the monolignols away from the path of lignin polymerization and crosslinking. By modifying iso-eugenol 4-O-methyl transferase (IEMT) from the 4-O-methylation of isoeugenol to the 3/5-O-methylation of caffeic acid, the modified IEMT was used to reduce lignin content of model plants.

Journal Publication

• Engineering Monolignol 4-O-Methyltransferases to Modulate Lignin Biosynthesis (.pdf)

Press Releases

• 462nd Brookhaven Lecture Featuring Chang-Jun Liu: Tailoring Biomass to Biofuels and Bioproducts: Tailoring Lignocellulosic Feedstocks for a Sustainable Energy Future

Have Questions?

For more information about this technology, contact Christine Brakel, (631) 344-7134.