PMID- 32570013 OWN - NLM STAT- MEDLINE DCOM- 20201210 LR - 20201214 IS - 1873-2690 (Electronic) IS - 0981-9428 (Linking) VI - 154 DP - 2020 Sep TI - Effects of exogenous abscisic acid on oil content, fatty acid composition, biodiesel properties and lipid components in developing Siberian apricot (Prunus sibirica) seeds. PG - 260-267 LID - S0981-9428(20)30301-6 [pii] LID - 10.1016/j.plaphy.2020.06.020 [doi] AB - Previous studies in Siberian apricot (Prunus sibirica) seed kernel (SASK) have suggested the involvement of abscisic acid (ABA) signaling pathway in oil accumulation. However, there are few reports on the effects of ABA on the metabolism of fatty acids (FA) in seed development. Here, we first evaluated the response of developing SASK to ABA treatment, with a focus on oil content, FA composition, biodiesel properties, lipid compounds and gene expressions. Compared with control samples, the application of exogenous ABA increased the total oil content by 6.55% in mature SASK. The C18:1 content markedly increased in ABA treatment, and conversely C16:0 decreased. Exogenous ABA also improved the biodiesel properties of SASK oil, making it better suited to the specifications of biodiesel standards. Furthermore, the molecular species of phosphatidylcholine (PC), phosphatidic acid (PA), diacylglycerol (DAG) and triacylglycerol (TAG) were detected using lipidomics analysis. The 18:1/18:1 was the main component in PA, PC and DAG, while the main components of 18:1/18:1/18:2, 18:1/18:1/18:3, 18:2/18:2/18:2 and 18:1/18:1/18:1 in TAG. Most lipid species gradually increased with SASK maturity. In addition, the relative contents of TAG-18:1/18:1/18:2 and TAG-18:1/18:1/18:1 in developing SASK increased with the application of exogenous ABA. We also detected elevated gene expression of key genes involved in ABA chemical pathway, which likely affected FA biosynthesis and accumulation. Our results provide insight into the effects of ABA on the oil accumulation in developing SASK, which has direct applications to improving the quality of SASK-derived biodiesel. CI - Copyright (c) 2020 The Authors. Published by Elsevier Masson SAS.. All rights reserved. FAU - Huo, Kaisen AU - Huo K AD - Key Laboratory of Genetics and Germplasm Innovation of Tropical Special Forest Trees and Ornamental Plants (Ministry of Education), College of Forestry, Hainan University, Haikou, Hainan, 570228, China. FAU - Shui, Lanya AU - Shui L AD - Key Laboratory of Genetics and Germplasm Innovation of Tropical Special Forest Trees and Ornamental Plants (Ministry of Education), College of Forestry, Hainan University, Haikou, Hainan, 570228, China. FAU - Mai, Yiting AU - Mai Y AD - Key Laboratory of Genetics and Germplasm Innovation of Tropical Special Forest Trees and Ornamental Plants (Ministry of Education), College of Forestry, Hainan University, Haikou, Hainan, 570228, China. FAU - Zhou, Nan AU - Zhou N AD - Key Laboratory of Genetics and Germplasm Innovation of Tropical Special Forest Trees and Ornamental Plants (Ministry of Education), College of Forestry, Hainan University, Haikou, Hainan, 570228, China. FAU - Liu, Yang AU - Liu Y AD - Key Laboratory of Genetics and Germplasm Innovation of Tropical Special Forest Trees and Ornamental Plants (Ministry of Education), College of Forestry, Hainan University, Haikou, Hainan, 570228, China. FAU - Zhang, Chengxin AU - Zhang C AD - Key Laboratory of Genetics and Germplasm Innovation of Tropical Special Forest Trees and Ornamental Plants (Ministry of Education), College of Forestry, Hainan University, Haikou, Hainan, 570228, China. FAU - Niu, Jun AU - Niu J AD - Key Laboratory of Genetics and Germplasm Innovation of Tropical Special Forest Trees and Ornamental Plants (Ministry of Education), College of Forestry, Hainan University, Haikou, Hainan, 570228, China. Electronic address: niujun@hainanu.edu.cn. LA - eng PT - Journal Article DEP - 20200614 PL - France TA - Plant Physiol Biochem JT - Plant physiology and biochemistry : PPB JID - 9882449 RN - 0 (Biofuels) RN - 0 (Fatty Acids) RN - 0 (Lipids) RN - 0 (Plant Oils) RN - 72S9A8J5GW (Abscisic Acid) SB - IM MH - Abscisic Acid/*pharmacology MH - *Biofuels MH - Fatty Acids/*chemistry MH - Lipids/*chemistry MH - Plant Oils/chemistry MH - Prunus/*chemistry MH - Seeds/*chemistry OTO - NOTNLM OT - Abscisic acid OT - Biodiesel fuel properties OT - Fatty acids OT - Lipidomics OT - Prunus sibirica EDAT- 2020/06/23 06:00 MHDA- 2020/12/15 06:00 CRDT- 2020/06/23 06:00 PHST- 2020/03/03 00:00 [received] PHST- 2020/06/10 00:00 [revised] PHST- 2020/06/12 00:00 [accepted] PHST- 2020/06/23 06:00 [pubmed] PHST- 2020/12/15 06:00 [medline] PHST- 2020/06/23 06:00 [entrez] AID - S0981-9428(20)30301-6 [pii] AID - 10.1016/j.plaphy.2020.06.020 [doi] PST - ppublish SO - Plant Physiol Biochem. 2020 Sep;154:260-267. doi: 10.1016/j.plaphy.2020.06.020. Epub 2020 Jun 14.