Sequestration and Transport of Lignin Monomeric Precursors
Lignin is the second most abundant terrestrial biopolymer after cellulose. It is essential for the viability of vascular plants. Lignin precursors, the monolignols, are synthesized within the cytosol of the cell. Thereafter, these monomeric precursors are exported into the cell wall, where they are polymerized and integrated into the wall matrix. Accordingly, transport of monolignols across cell membranes is a critical step affecting deposition of lignin in the secondarily thickened cell wall. While the biosynthesis of monolignols is relatively well understood, our knowledge of sequestration and transport of these monomers is sketchy. In this article, we review different hypotheses on monolignol transport and summarize the recent progresses toward the understanding of the molecular mechanisms underlying monolignol sequestration and transport across membranes. Deciphering molecular mechanisms for lignin precursor transport will support a better biotechnological solution to manipulate plant lignification for more efficient agricultural and industrial applications of cell wall biomass.
- Research Organization:
- Brookhaven National Lab. (BNL), Upton, NY (United States)
- Sponsoring Organization:
- DOE - OFFICE OF SCIENCE
- DOE Contract Number:
- DE-AC02-98CH10886
- OSTI ID:
- 1014350
- Report Number(s):
- BNL-94773-2011-JA; R&D Project: BO-147; 11-007; KC0304000; TRN: US201111%%303
- Journal Information:
- Molecules, Vol. 16, Issue 1; ISSN 1420-3049
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
99 GENERAL AND MISCELLANEOUS//MATHEMATICS, COMPUTING, AND INFORMATION SCIENCE
BIOMASS
BIOSYNTHESIS
CELL MEMBRANES
CELL WALL
CELLULOSE
DEPOSITION
LIGNIN
MEMBRANES
MONOMERS
PRECURSOR
TRANSPORT
VIABILITY
lignin
monolignols
monolignol glucosides
ABC transporters
vacuolar sequestration