Journal
JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY
Volume 68, Issue 1, Pages 426-438Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acs.jafc.9b04179
Keywords
peanut; lipidomics; high oleic acid; FAD2; TAGs assembly
Funding
- National Natural Science Foundation of China [31771841, 31801401]
- National key research and development program [2018YFD0201009]
- Science and Technology Program of Guangzhou, China [201904010190]
- Open Fund of Guangdong Key Laboratory of Crop Genetic Improvement [2017B030314090]
- Natural Science Foundation of Guangdong Province [2017A030311007]
- Modern Agroindustry Technology Research System [CARS -13]
- Guangdong Natural Science Foundation [2017A030312004]
- Jinying Star Talent Project of Guangdong Academy of Agricultural Sciences (2018)
- Excellent Ph.D. Program of Guangdong Academy of Agricultural Sciences (2017)
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Modern peanut contains fatty acid desaturase 2 (FAD2) mutation, which is capable of producing high oleic acid for human health. However, the dynamic changes of the lipidome regarding fad2 remain elusive in peanut seed. In the present study, 547 lipid features were identified in high- and normal-oleic peanut seeds by utilizing the mass spectrometric approach. The fad2-induced differently expressed lipids (DELs) were polarly distributed at early and maturation stages during high-oleic acid (OA) seed development. Subsequently, integration of previously published proteomic data and lipidomic data revealed that 21 proteins and 149 DELs were annotated into the triacylglycerol assembly map, of which nine enzymes and 31 lipid species shared similar variation tendencies. Additionally, the variation tendencies of 17 acyl fatty acids were described in a hypothetical biosynthetic pathway. Collectively, the understanding of the lipid composition correlated with fad2 established a foundation for future high-OA peanut breeding based on lipidomic data.
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