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Title: Triacylglycerol Metabolism, Function, and Accumulation in Plant Vegetative Tissues

One of the most abundant energy-dense storage compounds in eukaryotes are oils in the form of triacylglycerols , and their metabolism plays a key role in cellular energy balance, lipid homeostasis, growth, and maintenance. Plants accumulate oils primarily in seeds and fruits. Moreover, plant oils are used for food and feed and, increasingly, as feedstocks for biodiesel and industrial chemicals. Although plant vegetative tissues do not accumulate significant levels of triacylglycerols, they possess a high capacity for their synthesis, storage, and metabolism. The development of plants that accumulate oil in vegetative tissues presents an opportunity for expanded production of triacylglycerols as a renewable and sustainable bioenergy source. We review recent progress in the understanding of triacylglycerol synthesis, turnover, storage, and function in leaves and discuss emerging genetic engineering strategies targeted at enhancing triacylglycerol accumulation in biomass crops. Such plants could potentially be modified to produce oleochemical feedstocks or nutraceuticals.
Authors:
 [1] ;  [1]
  1. Brookhaven National Lab. (BNL), Upton, NY (United States). Biology Dept.
Publication Date:
Report Number(s):
BNL-111805-2016-JA
Journal ID: ISSN 1543-5008; R&D Project: FWP# BO163; KC0304020
Grant/Contract Number:
SC00112704; DOE KC0304000
Type:
Accepted Manuscript
Journal Name:
Annual Review of Plant Biology
Additional Journal Information:
Journal Volume: 67; Journal Issue: 1; Journal ID: ISSN 1543-5008
Publisher:
Annual Reviews
Research Org:
Brookhaven National Laboratory (BNL), Upton, NY (United States)
Sponsoring Org:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
Country of Publication:
United States
Language:
English
Subject:
59 BASIC BIOLOGICAL SCIENCES; Triacylglycerol; fatty acid; lipid homeostasis; metabolic engineering
OSTI Identifier:
1335392