Please use this identifier to cite or link to this item: https://doi.org/10.1038/s41598-017-00438-8
Title: Transcriptome and functional analysis reveals hybrid vigor for oil biosynthesis in oil palm
Authors: Jin, J 
Sun, Y
Qu, J
Syah, R
Lim, C.-H
Alfiko, Y
Rahman, N
Suwanto, A
Yue, G 
Wong, L 
Chua, N.-H
Ye, J
Keywords: Arabidopsis protein
lipid
palm oil
transcription factor
WRINKLED1 protein, Arabidopsis
Arabidopsis
Arecaceae
biosynthesis
chimera
deficiency
gene expression profiling
genetic complementation
genetics
heterosis
metabolism
Arabidopsis
Arabidopsis Proteins
Arecaceae
Biosynthetic Pathways
Chimera
Gene Expression Profiling
Genetic Complementation Test
Hybrid Vigor
Lipids
Palm Oil
Transcription Factors
Issue Date: 2017
Publisher: Nature Publishing Group
Citation: Jin, J, Sun, Y, Qu, J, Syah, R, Lim, C.-H, Alfiko, Y, Rahman, N, Suwanto, A, Yue, G, Wong, L, Chua, N.-H, Ye, J (2017). Transcriptome and functional analysis reveals hybrid vigor for oil biosynthesis in oil palm. Scientific Reports 7 (1) : 439. ScholarBank@NUS Repository. https://doi.org/10.1038/s41598-017-00438-8
Abstract: Oil palm is the most productive oil crop in the world and composes 36% of the world production. However, the molecular mechanisms of hybrids vigor (or heterosis) between Dura, Pisifera and their hybrid progeny Tenera has not yet been well understood. Here we compared the temporal and spatial compositions of lipids and transcriptomes for two oil yielding organs mesocarp and endosperm from Dura, Pisifera and Tenera. Multiple lipid biosynthesis pathways are highly enriched in all non-additive expression pattern in endosperm, while cytokinine biosynthesis and cell cycle pathways are highly enriched both in endosperm and mesocarp. Compared with parental palms, the high oil content in Tenera was associated with much higher transcript levels of EgWRI1, homolog of Arabidopsis thaliana WRINKLED1. Among 338 identified genes in lipid synthesis, 207 (61%) has been identified to contain the WRI1 specific binding AW motif. We further functionally identified EgWRI1-1, one of three EgWRI1 orthologs, by genetic complementation of the Arabidopsis wri1 mutant. Ectopic expression of EgWRI1-1 in plant produced dramatically increased seed mass and oil content, with oil profile changed. Our findings provide an explanation for EgWRI1 as an important gene contributing hybrid vigor in lipid biosynthesis in oil palm. © 2017 The Author(s).
Source Title: Scientific Reports
URI: https://scholarbank.nus.edu.sg/handle/10635/174414
ISSN: 2045-2322
DOI: 10.1038/s41598-017-00438-8
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