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Title: A transgene design for enhancing oil content in Arabidopsis and Camelina seeds

Journal Article · · Biotechnology for Biofuels
 [1];  [2];  [3];  [4];  [5]; ORCiD logo [6]
  1. Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States). Joint BioEnergy Inst. and Environmental Genomics and Systems Biology Division; Nankai Univ., Tianjin (China). College of Life Science
  2. Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States). Joint BioEnergy Inst. and Environmental Genomics and Systems Biology Division; Northeast Forestry Univ., Harbin (United States). College of Life Science
  3. US Dept. of Agriculture (USDA)., Albany, CA (United States). Western Regional Research Center, Agricultural Research Service
  4. Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States). Joint BioEnergy Inst. and Environmental Genomics and Systems Biology Division
  5. Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States). Joint BioEnergy Inst. and Environmental Genomics and Systems Biology Division; Univ. of California, Berkeley, CA (United States). Dept. of Plant and Microbial Biology
  6. Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States). Joint BioEnergy Inst. and Environmental Genomics and Systems Biology Division; Univ. of California, Berkeley, CA (United States). Dept. of Plant and Microbial Biology

Background: Increasing the oil yield is a major objective for oilseed crop improvement. Oil biosynthesis and accumulation are influenced by multiple genes involved in embryo and seed development. The leafy cotyledon1 (LEC1) is a master regulator of embryo development that also enhances the expression of genes involved in fatty acid biosynthesis. We speculated that seed oil could be increased by targeted overexpression of a master regulating transcription factor for oil biosynthesis, using a downstream promoter for a gene in the oil biosynthesis pathway. To verify the effect of such a combination on seed oil content, we made constructs with maize (Zea mays) ZmLEC1 driven by serine carboxypeptidase-like (SCPL17) and acyl carrier protein (ACP5) promoters, respectively, for expression in transgenic Arabidopsis thaliana and Camelina sativa. Results: Agrobacterium-mediated transformation successfully generated Arabidopsis and Camelina lines that overexpressed ZmLEC1 under the control of a seed-specific promoter. This overexpression does not appear to be detrimental to seed vigor under laboratory conditions and did not cause observable abnormal growth phenotypes throughout the life cycle of the plants. Overexpression of ZmLEC1 increased the oil content in mature seeds by more than 20% in Arabidopsis and 26% in Camelina. In conclusion: The findings suggested that the maize master regulator, ZmLEC1, driven by a downstream seed-specific promoter, can be used to increase oil production in Arabidopsis and Camelina and might be a promising target for increasing oil yield in oilseed crops.0

Research Organization:
Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Biological and Environmental Research (BER); China Scholarship Council
Grant/Contract Number:
AC02-05CH11231
OSTI ID:
1433120
Journal Information:
Biotechnology for Biofuels, Vol. 11, Issue 1; ISSN 1754-6834
Publisher:
BioMed CentralCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 20 works
Citation information provided by
Web of Science

References (24)

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Suppression of the SUGAR-DEPENDENT1 triacylglycerol lipase family during seed development enhances oil yield in oilseed rape ( Brassica napus L.) journal November 2012
Overexpression of Arabidopsis WRI1 enhanced seed mass and storage oil content in Camelina sativa journal May 2015
Gateway-compatible vectors for plant functional genomics and proteomics journal February 2006
WRINKLED1 encodes an AP2/EREB domain protein involved in the control of storage compound biosynthesis in Arabidopsis journal September 2004
Enhanced Seed Oil Production in Canola by Conditional Expression of Brassica napus LEAFY COTYLEDON1 and LEC1-LIKE in Developing Seeds journal May 2011
An “Electronic Fluorescent Pictograph” Browser for Exploring and Analyzing Large-Scale Biological Data Sets journal August 2007
Multigene Engineering of Triacylglycerol Metabolism Boosts Seed Oil Content in Arabidopsis journal April 2014
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Seed-Specific Over-Expression of an Arabidopsis cDNA Encoding a Diacylglycerol Acyltransferase Enhances Seed Oil Content and Seed Weight journal June 2001
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A gene stacking approach leads to engineered plants with highly increased galactan levels in Arabidopsis journal December 2014
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Cited By (4)

Mapping quantitative trait loci for seed traits in Camelina sativa journal June 2019
Enhancing micro RNA 167A expression in seed decreases the α‐linolenic acid content and increases seed size in Camelina sativa journal February 2019
Transcriptome analysis of rubber biosynthesis in guayule (Parthenium argentatum gray) journal February 2019
WRINKLED1, a “Master Regulator” in Transcriptional Control of Plant Oil Biosynthesis journal July 2019


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