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Erel R, Yermiyahu U, Yasuor H, Ben-Gal A, Zipori I, Dag A. Elevated fruit nitrogen impairs oil biosynthesis in olive ( Olea europaea L.). FRONTIERS IN PLANT SCIENCE 2023; 14:1180391. [PMID: 37457358 PMCID: PMC10347680 DOI: 10.3389/fpls.2023.1180391] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/06/2023] [Accepted: 06/08/2023] [Indexed: 07/18/2023]
Abstract
Oil in fruits and seeds is an important source of calories and essential fatty acids for humans. This specifically holds true for olive oil, which is appreciated for its superior nutritional value. Most olive orchards are cultivated to produce oil, which are the outcome of fruit yield and oil content. Little information is available on the effect of nitrogen (N) on olive fruit oil content. The response of olive trees to different rates of N was therefore studied in soilless culture (3 years) and commercial field (6 years) experiments. In both experiments, fruit N level and oil biosynthesis were negatively associated. Fruit N increased in response to N fertilization level and was inversely related to fruit load. The negative correlation between fruit N and oil content was more pronounced under high fruit load, indicating sink limitation for carbon. These results agree with those reported for oilseed crops for which a trade-off between oil and protein was proposed as the governing mechanism for the negative response to elevated N levels. Our results suggest that the protein/oil trade-off paradigm cannot explain the noticeable decrease in oil biosynthesis in olives, indicating that additional mechanisms are involved in N-induced inhibition of oil production. This inhibition was not related to the soluble carbohydrate levels in the fruit, which were comparable regardless of N level. These results emphasize the importance of balanced N nutrition in oil-olive cultivation to optimize production with oil content.
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Nissim Y, Shlosberg M, Biton I, Many Y, Doron-Faigenboim A, Hovav R, Kerem Z, Avidan B, Ben-Ari G. A High Temperature Environment Regulates the Olive Oil Biosynthesis Network. PLANTS (BASEL, SWITZERLAND) 2020; 9:plants9091135. [PMID: 32882997 PMCID: PMC7569966 DOI: 10.3390/plants9091135] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/22/2020] [Revised: 08/24/2020] [Accepted: 08/31/2020] [Indexed: 06/11/2023]
Abstract
Climate change has been shown to have a substantial impact on agriculture and high temperatures and heat stress are known to have many negative effects on the vegetative and reproductive phases of plants. In a previous study, we addressed the effects of high temperature environments on olive oil yield and quality, by comparing the fruit development and oil accumulation and quality of five olive cultivars placed in high temperature and moderate temperature environments. The aim of the current study was to explore the molecular mechanism resulting in the negative effect of a high temperature environment on oil quantity and quality. We analyzed the transcriptome of two extreme cultivars, 'Barnea', which is tolerant to high temperatures in regard to quantity of oil production, but sensitive regarding its quality, and 'Souri', which is heat sensitive regarding quantity of oil produced, but relatively tolerant regarding its quality. Transcriptome analyses have been carried out at three different time points during fruit development, focusing on the genes involved in the oil biosynthesis pathway. We found that heat-shock protein expression was induced by the high temperature environment, but the degree of induction was cultivar dependent. The 'Barnea' cultivar, whose oil production showed greater tolerance to high temperatures, exhibited a larger degree of induction than the heat sensitive 'Souri'. On the other hand, many genes involved in olive oil biosynthesis were found to be repressed as a response to high temperatures. OePDCT as well as OeFAD2 genes showed cultivar dependent expression patterns according to their heat tolerance characteristics. The transcription factors OeDof4.3, OeWRI1.1, OeDof4.4 and OeWRI1.2 were identified as key factors in regulating the oil biosynthesis pathway in response to heat stress, based on their co-expression characteristics with other genes involved in this pathway. Our results may contribute to identifying or developing a more heat tolerant cultivar, which will be able to produce high yield and quality oil in a future characterized by global warming.
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Affiliation(s)
- Yael Nissim
- Institute of Plant Sciences, ARO, The Volcani Center, Rishon LeZion 7528809, Israel; (Y.N.); (M.S.); (I.B.); (Y.M.); (A.D.-F.); (R.H.); (B.A.)
| | - Maya Shlosberg
- Institute of Plant Sciences, ARO, The Volcani Center, Rishon LeZion 7528809, Israel; (Y.N.); (M.S.); (I.B.); (Y.M.); (A.D.-F.); (R.H.); (B.A.)
- Institute of Biochemistry, Food Science and Nutrition, The Robert H. Smith Faculty of Agriculture, Food and Environment, The Hebrew University of Jerusalem, Rehovot 76100, Israel;
| | - Iris Biton
- Institute of Plant Sciences, ARO, The Volcani Center, Rishon LeZion 7528809, Israel; (Y.N.); (M.S.); (I.B.); (Y.M.); (A.D.-F.); (R.H.); (B.A.)
| | - Yair Many
- Institute of Plant Sciences, ARO, The Volcani Center, Rishon LeZion 7528809, Israel; (Y.N.); (M.S.); (I.B.); (Y.M.); (A.D.-F.); (R.H.); (B.A.)
| | - Adi Doron-Faigenboim
- Institute of Plant Sciences, ARO, The Volcani Center, Rishon LeZion 7528809, Israel; (Y.N.); (M.S.); (I.B.); (Y.M.); (A.D.-F.); (R.H.); (B.A.)
| | - Ran Hovav
- Institute of Plant Sciences, ARO, The Volcani Center, Rishon LeZion 7528809, Israel; (Y.N.); (M.S.); (I.B.); (Y.M.); (A.D.-F.); (R.H.); (B.A.)
| | - Zohar Kerem
- Institute of Biochemistry, Food Science and Nutrition, The Robert H. Smith Faculty of Agriculture, Food and Environment, The Hebrew University of Jerusalem, Rehovot 76100, Israel;
| | - Benjamin Avidan
- Institute of Plant Sciences, ARO, The Volcani Center, Rishon LeZion 7528809, Israel; (Y.N.); (M.S.); (I.B.); (Y.M.); (A.D.-F.); (R.H.); (B.A.)
| | - Giora Ben-Ari
- Institute of Plant Sciences, ARO, The Volcani Center, Rishon LeZion 7528809, Israel; (Y.N.); (M.S.); (I.B.); (Y.M.); (A.D.-F.); (R.H.); (B.A.)
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High temperature environment reduces olive oil yield and quality. PLoS One 2020; 15:e0231956. [PMID: 32324774 PMCID: PMC7179852 DOI: 10.1371/journal.pone.0231956] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2019] [Accepted: 04/05/2020] [Indexed: 11/19/2022] Open
Abstract
Global warming is predicted to have a negative effect on plant growth due to the damaging effect of high temperatures. In order to address the effect of high temperature environments on olive oil yield and quality, we compared its effect on the fruit development of five olive cultivars placed in a region noted for its high summer temperatures, with trees of the same cultivars placed in a region of relatively mild summers. We found that the effects of a high temperature environment are genotype dependent and in general, high temperatures during fruit development affected three important traits: fruit weight, oil concentration and oil quality. None of the tested cultivars exhibited complete heat stress tolerance. Final dry fruit weight at harvest of the 'Barnea' cultivar was not affected by the high temperature environment, whereas the 'Koroneiki', 'Coratina', 'Souri' and 'Picholine' cultivars exhibited decreased dry fruit weight at harvest in response to higher temperatures by 0.2, 1, 0.4 and 0.2 g respectively. The pattern of final oil concentration was also cultivar dependent, 'Barnea', 'Coratina' and 'Picholine' not being affected by the high temperature environment, whereas the 'Koroneiki' and 'Souri' cultivars showed a decreased dry fruit oil concentration at harvest under the same conditions by 15 and 8% respectively. Regarding the quality of oil produced, the 'Souri' cultivar proved more tolerant to a high temperature environment than any other of the cultivars analyzed in this study. These results suggest that different olive cultivars have developed a variety of mechanisms in dealing with high temperatures. Elucidation of the mechanism of each of these responses may open the way to development of a variety of olives broadly adapted to conditions of high temperatures.
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Ding LN, Gu SL, Zhu FG, Ma ZY, Li J, Li M, Wang Z, Tan XL. Long-chain acyl-CoA synthetase 2 is involved in seed oil production in Brassica napus. BMC PLANT BIOLOGY 2020; 20:21. [PMID: 31931712 PMCID: PMC6958636 DOI: 10.1186/s12870-020-2240-x] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/21/2019] [Accepted: 01/07/2020] [Indexed: 05/02/2023]
Abstract
BACKGROUND Triacylglycerols (TAGs) are the main composition of plant seed oil. Long-chain acyl-coenzyme A synthetases (LACSs) catalyze the synthesis of long-chain acyl-coenzyme A, which is one of the primary substrates for TAG synthesis. In Arabidopsis, the LACS gene family contains nine members, among which LACS1 and LACS9 have overlapping functions in TAG biosynthesis. However, functional characterization of LACS proteins in rapeseed have been rarely reported. RESULTS An orthologue of the Arabidopsis LACS2 gene (BnLACS2) that is highly expressed in developing seeds was identified in rapeseed (Brassica napus). The BnLACS2-GFP fusion protein was mainly localized to the endoplasmic reticulum, where TAG biosynthesis occurs. Interestingly, overexpression of the BnLACS2 gene resulted in significantly higher oil contents in transgenic rapeseed plants compared to wild type, while BnLACS2-RNAi transgenic rapeseed plants had decreased oil contents. Furthermore, quantitative real-time PCR expression data revealed that the expression of several genes involved in glycolysis, as well as fatty acid (FA) and lipid biosynthesis, was also affected in transgenic plants. CONCLUSIONS A long chain acyl-CoA synthetase, BnLACS2, located in the endoplasmic reticulum was identified in B. napus. Overexpression of BnLACS2 in yeast and rapeseed could increase oil content, while BnLACS2-RNAi transgenic rapeseed plants exhibited decreased oil content. Furthermore, BnLACS2 transcription increased the expression of genes involved in glycolysis, and FA and lipid synthesis in developing seeds. These results suggested that BnLACS2 is an important factor for seed oil production in B. napus.
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Affiliation(s)
- Li-Na Ding
- Institute of Life Sciences, Jiangsu University, Zhenjiang, China
| | - Shou-Lai Gu
- Institute of Life Sciences, Jiangsu University, Zhenjiang, China
| | - Fu-Ge Zhu
- Institute of Life Sciences, Jiangsu University, Zhenjiang, China
| | - Zhong-Yan Ma
- Institute of Life Sciences, Jiangsu University, Zhenjiang, China
| | - Juan Li
- Institute of Life Sciences, Jiangsu University, Zhenjiang, China
| | - Ming Li
- Institute of Life Sciences, Jiangsu University, Zhenjiang, China
| | - Zheng Wang
- Institute of Life Sciences, Jiangsu University, Zhenjiang, China
| | - Xiao-Li Tan
- Institute of Life Sciences, Jiangsu University, Zhenjiang, China
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Trapani S, Migliorini M, Cecchi L, Giovenzana V, Beghi R, Canuti V, Fia G, Zanoni B. Feasibility of filter‐based NIR spectroscopy for the routine measurement of olive oil fruit ripening indices. EUR J LIPID SCI TECH 2016. [DOI: 10.1002/ejlt.201600239] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Serena Trapani
- Department of Agricultural, Food, and Forestry Systems Management (GESAAF) – Food Science and Technology and Microbiology SectionUniversità degli Studi di FirenzeFlorenceItaly
| | - Marzia Migliorini
- PromofirenzeSpecial Agency of the Florence Chamber of Commerce – Laboratorio Chimico Merceologico UnitFlorenceItaly
| | - Lorenzo Cecchi
- PromofirenzeSpecial Agency of the Florence Chamber of Commerce – Laboratorio Chimico Merceologico UnitFlorenceItaly
| | - Valentina Giovenzana
- Department of Agricultural and Environmental Sciences – Production, Landscape, AgroenergyUniversità degli Studi di MilanoMilanItaly
| | - Roberto Beghi
- Department of Agricultural and Environmental Sciences – Production, Landscape, AgroenergyUniversità degli Studi di MilanoMilanItaly
| | - Valentina Canuti
- Department of Agricultural, Food, and Forestry Systems Management (GESAAF) – Food Science and Technology and Microbiology SectionUniversità degli Studi di FirenzeFlorenceItaly
| | - Giovanna Fia
- Department of Agricultural, Food, and Forestry Systems Management (GESAAF) – Food Science and Technology and Microbiology SectionUniversità degli Studi di FirenzeFlorenceItaly
| | - Bruno Zanoni
- Department of Agricultural, Food, and Forestry Systems Management (GESAAF) – Food Science and Technology and Microbiology SectionUniversità degli Studi di FirenzeFlorenceItaly
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Yang Z, Ji H, Liu D. Oil Biosynthesis in Underground Oil-Rich Storage Vegetative Tissue: Comparison of Cyperus esculentus Tuber with Oil Seeds and Fruits. PLANT & CELL PHYSIOLOGY 2016; 57:2519-2540. [PMID: 27742886 DOI: 10.1093/pcp/pcw165] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/26/2016] [Accepted: 09/16/2016] [Indexed: 05/25/2023]
Abstract
Cyperus esculentus is unique in that it can accumulate rich oil in its tubers. However, the underlying mechanism of tuber oil biosynthesis is still unclear. Our transcriptional analyses of the pathways from pyruvate production up to triacylglycerol (TAG) accumulation in tubers revealed many distinct species-specific lipid expression patterns from oil seeds and fruits, indicating that in C. esculentus tuber: (i) carbon flux from sucrose toward plastid pyruvate could be produced mostly through the cytosolic glycolytic pathway; (ii) acetyl-CoA synthetase might be an important contributor to acetyl-CoA formation for plastid fatty acid biosynthesis; (iii) the expression pattern for stearoyl-ACP desaturase was associated with high oleic acid composition; (iv) it was most likely that endoplasmic reticulum (ER)-associated acyl-CoA synthetase played a significant role in the export of fatty acids between the plastid and ER; (v) lipid phosphate phosphatase (LPP)-δ was most probably related to the formation of the diacylglycerol (DAG) pool in the Kennedy pathway; and (vi) diacylglyceroltransacylase 2 (DGAT2) and phospholipid:diacylglycerolacyltransferase 1 (PDAT1) might play crucial roles in tuber oil biosynthesis. In contrast to oil-rich fruits, there existed many oleosins, caleosins and steroleosins with very high transcripts in tubers. Surprisingly, only a single ortholog of WRINKLED1 (WRI1)-like transcription factor was identified and it was poorly expressed during tuber development. Our study not only provides insights into lipid metabolism in tuber tissues, but also broadens our understanding of TAG synthesis in oil plants. Such knowledge is of significance in exploiting this oil-rich species and manipulating other non-seed tissues to enhance storage oil production.
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Affiliation(s)
- Zhenle Yang
- Key Lab of Plant Resources, Institute of Botany, the Chinese Academy of Sciences, Beijing 100093, China
| | - Hongying Ji
- Key Lab of Plant Resources, Institute of Botany, the Chinese Academy of Sciences, Beijing 100093, China
| | - Dantong Liu
- Key Lab of Plant Resources, Institute of Botany, the Chinese Academy of Sciences, Beijing 100093, China
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Beltrán Ortega J, Martínez Gila DM, Aguilera Puerto D, Gámez García J, Gómez Ortega J. Novel technologies for monitoring the in-line quality of virgin olive oil during manufacturing and storage. JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE 2016; 96:4644-4662. [PMID: 27012363 DOI: 10.1002/jsfa.7733] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/16/2015] [Revised: 03/12/2016] [Accepted: 03/20/2016] [Indexed: 06/05/2023]
Abstract
The quality of virgin olive oil is related to the agronomic conditions of the olive fruits and the process variables of the production process. Nowadays, food markets demand better products in terms of safety, health and organoleptic properties with competitive prices. Innovative techniques for process control, inspection and classification have been developed in order to to achieve these requirements. This paper presents a review of the most significant sensing technologies which are increasingly used in the olive oil industry to supervise and control the virgin olive oil production process. Throughout the present work, the main research studies in the literature that employ non-invasive technologies such as infrared spectroscopy, computer vision, machine olfaction technology, electronic tongues and dielectric spectroscopy are analysed and their main results and conclusions are presented. These technologies are used on olive fruit, olive slurry and olive oil to determine parameters such as acidity, peroxide indexes, ripening indexes, organoleptic properties and minor components, among others. © 2016 Society of Chemical Industry.
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Affiliation(s)
- Julio Beltrán Ortega
- Robotics, Automation and Computer Vision Group, Department of Electronic Engineering and Automation, University of Jaén, Campus las Lagunillas s/n, 23071, Jaén, Spain.
| | - Diego M Martínez Gila
- Robotics, Automation and Computer Vision Group, Department of Electronic Engineering and Automation, University of Jaén, Campus las Lagunillas s/n, 23071, Jaén, Spain
| | - Daniel Aguilera Puerto
- ANDALTEC, Plastic Technological Center, Avd. Principal s/n. Ampliación Polígono Cañada de la Fuente, C/ Vilches s/n, 23600, Martos, Jaén, Spain
| | - Javier Gámez García
- Robotics, Automation and Computer Vision Group, Department of Electronic Engineering and Automation, University of Jaén, Campus las Lagunillas s/n, 23071, Jaén, Spain
| | - Juan Gómez Ortega
- Robotics, Automation and Computer Vision Group, Department of Electronic Engineering and Automation, University of Jaén, Campus las Lagunillas s/n, 23071, Jaén, Spain
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Nenadis N, Tsimidou MZ. Perspective of vibrational spectroscopy analytical methods in on-field/official control of olives and virgin olive oil. EUR J LIPID SCI TECH 2016. [DOI: 10.1002/ejlt.201600148] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Nikolaos Nenadis
- Laboratory of Food Chemistry and Technology; School of Chemistry; Aristotle University of Thessaloniki; Thessaloniki Greece
| | - Maria Z. Tsimidou
- Laboratory of Food Chemistry and Technology; School of Chemistry; Aristotle University of Thessaloniki; Thessaloniki Greece
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