Controlling lipid accumulation in cereal grains
Abstract
Plant oils have so far been mostly directed toward food and feed production. Nowadays however, these oils are more and more used as competitive alternatives to mineral hydrocarbon-based products. This increasing demand for vegetable oils has led to a renewed interest in elucidating the metabolism of storage lipids and its regulation in various plant systems. Cereal grains store carbon in the form of starch in a large endosperm and as oil in an embryo of limited size. Complementary studies on kernel development and metabolism have paved the way for breeding or engineering new varieties with higher grain oil content. This could be achieved either by increasing the relative proportion of the oil-rich embryo within the grain, or by enhancing oil synthesis and accumulation in embryonic structures. For instance, diacylglycerol acyltransferase (DGAT) that catalyses the ultimate reaction in the biosynthesis of triacylglycerol appears to be a promising target for increasing oil content in maize embryos. Similarly, over-expression of the maize transcriptional regulators ZmLEAFY COTYLEDON1 and ZmWRINKLED1 efficiently stimulates oil accumulation in the kernels of transgenic lines. Redirecting carbon from starch to oil in the endosperm, though not yet realized, is discussed.
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Oil content has been successfully improved in several cereal crops through conventional breeding techniques.
“Though oil content has been successfully improved in several cereal crops through conventional breeding techniques,53”
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- Authors
- Barthole, G., Lepiniec, L., Rogowsky, P. M., & Baud, S.
- Affiliations
- AgroParisTech (FR)
- Lyon 1 Université (FR)
- Corresponding author
- Baud, Sébastien
- Venue
- Plant Science
- Publisher
- Elsevier BV
- Published
- 2012-04
- Volume
- 185-186
- Pages
- 33-39
- ISSN
- 0168-9452 (ISSN-L)
- OpenAlex
- W1964425895
- Cited by
- 75
- References
- 56
- Citations by year
- 2026: 1 · 2025: 7 · 2024: 3 · 2023: 11 · 2022: 6 · 2021: 6 · 2020: 1 · 2019: 4 · 2018: 6 · 2017: 3 · 2016: 5 · 2015: 6 · 2014: 6 · 2013: 7 · 2012: 2
- FWCI
- 2.17
- Type
- journal article
- Language
- en
- Open access
- closed
- Locations
- Plant Science (publishedVersion)
- PubMed (publishedVersion)
- HAL (submittedVersion)
- Funders
- Agence Nationale de la Recherche (ANR-07-BLAN-0211, ANR-07-GPLA-0019)
- Topics
- Life Sciences › Biochemistry, Genetics and Molecular Biology › Biochemistry › Lipid metabolism and biosynthesis
- Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Plant biochemistry and biosynthesis
- Life Sciences › Agricultural and Biological Sciences › Plant Science › Plant Molecular Biology Research
- Keywords
- lipid accumulation, cereals, grain oil content, maize embryos, diacylglycerol acyltransferase, triglyceride synthesis, carbon allocation, grain development, transgenic breeding
- MeSH terms
- Breeding, Edible Grain, Zea mays, Genetic Engineering, Models, Genetic, Plant Oils, Plant Proteins, Seeds, Gene Expression, Plants, Genetically Modified, Diacylglycerol O-Acyltransferase
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