Role of transcription factors in storage lipid accumulation in plants

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TypeBook Chapter
Book titleAOCS Lipid Library: Lipid Chemistry, Biology, Technology & Analysis
Pages# of pages: 8
AbstractWith few exceptions, seeds oil accumulates as triacylglycerols; three fatty acid molecules esterified to a glycerol backbone. The synthesis of normal fatty acids and unusual fatty acids, their assembly into triacylglycerols and subsequent packaging to form oil bodies have been reviewed elsewhere, and appear as separate contributions to the AOCS Lipid Library by Harwood, Hildebrand, Weselake et al., and Huang, respectively. These processes are highly regulated, involving spatial compartmentalization between different organelles and the exquisite control of several biosynthetic steps by one or more of a variety of biochemical mechanisms. The important role of transcriptional regulation towards seed oil accumulation has recently emerged. Not only are mRNA levels of many genes involved in seed oil biosynthesis coordinated during seed development, but altering the levels of certain transcription factors can affect the expression of multiple lipid biosynthetic genes, resulting in altered seed oil content. This article reviews salient features of plant transcription factors that have been implicated in the control of seed oil deposition. To set the stage, fundamental concepts in transcription factor biology are first summarized. Subsequently, the role of key transcription factors is highlighted by describing seed oil phenotypes associated with altering their expression levels by mutagenesis or transgenic means, and providing information on the putative target genes and pathways affected. The location of the transcription factors in hierarchical cascades and the modes of transcriptional regulation are also discussed, when this information is known. A summary of the information presented is depicted in Figure 1.
Publication date
AffiliationNational Research Council Canada; Aquatic and Crop Resource Development
Peer reviewedNo
NRC number54656
NPARC number21268596
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Record identifier71e26e31-53b0-42f4-ab70-b3c91c3bc442
Record created2013-10-25
Record modified2016-05-09
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