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Insights Into Walnut Lipid Metabolism From Metabolome and Transcriptome Analysis

Authors :
Suxian Yan
Xingsu Wang
Chenkang Yang
Junyou Wang
Ying Wang
Bangbang Wu
Ling Qiao
Jiajia Zhao
Pourkheirandish Mohammad
Xingwei Zheng
Jianguo Xu
Huming Zhi
Jun Zheng
Source :
Frontiers in Genetics, Vol 12 (2021)
Publication Year :
2021
Publisher :
Frontiers Media S.A., 2021.

Abstract

Walnut oil is an excellent source of essential fatty acids. Systematic evaluation of walnut lipids has significance for the development of the nutritional and functional value of walnut. Ultra-performance liquid chromatography/Orbitrap high-resolution mass spectrometry (UHPLC-Orbitrap HRMS) was used to characterize the lipids of walnut. A total of 525 lipids were detected and triacylglycerols (TG) (18:2/18:2/18:3) and diacylglycerols (DG) (18:2/18:2) were the main glycerolipids present. Essential fatty acids, such as linoleic acid and linolenic acid, were the main DG and TG fatty acid chains. Many types of phospholipids were observed with phosphatidic acid being present in the highest concentration (5.58%). Using a combination of metabolome and transcriptome analysis, the present study mapped the main lipid metabolism pathway in walnut. These results may provide a theoretical basis for further study and specific gene targets to enable the development of walnut with increased oil content and modified fatty acid composition.

Details

Language :
English
ISSN :
16648021
Volume :
12
Database :
Directory of Open Access Journals
Journal :
Frontiers in Genetics
Publication Type :
Academic Journal
Accession number :
edsdoj.209c4b3644a748aa91eb34404a3085f1
Document Type :
article
Full Text :
https://doi.org/10.3389/fgene.2021.715731