scholarly journals GEOLOGICAL STRUCTURE AND OIL CONTENT OF THE BOBRIKOVSKY HORIZON OF OIL ACCUMULATION ZONE SHIVELEVNAYA IN ORENBURG REGION

2015 ◽  
pp. 24-27
Author(s):  
R. A. Katkov ◽  
V. I. Kislukhin
Keyword(s):  
Oil Content ◽  
Geological Structure ◽  
Oil Accumulation ◽  
Orenburg Region ◽  
Accumulation Zone ◽  
Oil Deposits ◽  
Commercial Value

The article presents a description of the geological structure and oil content of the Bobrikovsky horizon of the oil accumulation zone Shivelevnaya in Orenburg region. The producing formation commercial value associated with the Bobrikovsky horizon, within which the oil deposits are recognized is considered.

GEOLOGICAL STRUCTURE AND OIL AND GAS CONTENT OF THE OKSKY SUPER-HORIZON OF THE BUZULUK DEPRESSION UPLIFT ODNORODNOYE IN ORENBURG REGION

2015 ◽  
pp. 13-16
Author(s):  
R. A. Katkov ◽  
V. I. Kislukhin
Keyword(s):  
Oil And Gas ◽  
Geological Structure ◽  
Gas Content ◽  
Orenburg Region ◽  
Commercial Value

The article describes the study of the geological structure and oil and gas content of the Oksky super-horizon of the Buzuluk depression uplift Odnorodnoye in Orenburg region. It considers a commercial value of the productive formation in regard to the super-horizon Oksky, within which the oil and gas deposits were identified.

scholarly journals Features of the geological structure, tectonic development and oil and gas potential of the Chezhen depression (Bohai bay basin)

2021 ◽  
Vol 63 (5) ◽  
pp. 8-16
Author(s):  
Sh. Qiu ◽  
N. A. Kasyanova
Keyword(s):  
Large Scale ◽  
Oil And Gas ◽  
Geological Structure ◽  
Fault System ◽  
Bohai Bay ◽  
Industrial Oil ◽  
Tectonic Development ◽  
Geophysical Information ◽  
Oil Deposits ◽  
Gas Potential

Background. In terms of oil and gas, the territory of the Chezhen depression has been studied insufficiently compared to the neighbouring same-range depressions. These depressions complicate the first-order Jiyang depression, geographically coinciding with the largest Shengli hydrocarbon field. In recent years, much geological and geophysical information about the oil geologyof the Chezhen depression has been accumulated, which allows its prospecting oil and gas potential to be assessed.Aim. To reveal regular features of the geological structure and location of oil deposits in the Chezhen depression in order to support the prospecting and exploration work within the Chezhen block of the Shengli field.Materials and methods. A comprehensive analysis of literature data and collected materials was conducted. A historical and geodynamic study of the evolution of the studied area according to literature data was carried out, along with an analysis of the most recent geological and geophysical information and exploration data based on the materials of the “Shengli AKOO Sinopek” oil company. The analysis was based on the data from 52 drilling wells and the results of seismic surveys performed in the central part of the Chezhen depression.Results. Specific features of the block geological structure of the area under study were established, which formed under the repeated influence of large-scale horizontal tectonic movements occurring at different periods of geological history. The role of the most recent fault system in the modern spatial distribution of oil deposits was determined.Conclusions. Our studies demonstrate a great prospecting potential of the Chezhen depression territory, where the discovery of new industrial oil deposits can be expected.

scholarly journals Dynamic Transcriptome Changes Related to Oil Accumulation in Developing Soybean Seeds

2019 ◽  
Vol 20 (9) ◽  
pp. 2202 ◽  
Author(s):  
Songnan Yang ◽  
Long Miao ◽  
Jianbo He ◽  
Kai Zhang ◽  
Yan Li ◽  
...  
Keyword(s):  
Fatty Acid ◽  
Candidate Genes ◽  
Molecular Basis ◽  
Oil Content ◽  
Seed Oil ◽  
Soybean Seed ◽  
Soybean Seeds ◽  
Seed Oil Content ◽  
Oil Accumulation ◽  
Expression Levels

Soybean is one of the most important oil crops in the world. Revealing the molecular basis and exploring key candidate genes for seed oil synthesis has great significance for soybean improvement. In this study, we found that oil accumulation rates and gene expression levels changed dynamically during soybean seed development. The expression levels of genes in metabolic pathways such as carbon fixation, photosynthesis, glycolysis, and fatty acid biosynthesis were significantly up-regulated during the rapid accumulation of oil in developing soybean seeds. Through weighted correlation network analysis, we identified six co-expression modules associated with soybean seed oil content and the pink module was the most positively correlated (r = 0.83, p = 7 × 10−4) network. Through the integration of differential expression and co-expression analysis, we predicted 124 candidate genes potentially affecting soybean seed oil content, including seven genes in lipid metabolism pathway, two genes involved in glycolysis, one gene in sucrose metabolism, and 12 genes belonged to transcription factors as well as other categories. Among these, three genes (GmABI3b, GmNFYA and GmFAD2-1B) have been shown to control oil and fatty acid content in soybean seeds, and other newly identified candidate genes would broaden our knowledge to understand the molecular basis for oil accumulation in soybean seeds.

scholarly journals Grain yield and quality of maize hybrids in different FAO maturity groups

2010 ◽  
pp. 126-131
Author(s):  
Voichita Has ◽  
Radu Groza ◽  
Ioan Has ◽  
Ana Copandean ◽  
Elena Nagy
Keyword(s):  
Grain Yield ◽  
Oil Content ◽  
Starch Content ◽  
Vegetation Period ◽  
Starch Accumulation ◽  
Oil Accumulation ◽  
Maize Hybrids ◽  
Grain Yield And Quality ◽  
Maturity Groups

An improvement in the quality of maize grain by increasing the level of components responsible for its biological value is possibleby using genetic means. However, a change in the genotype, together with improving the nutrient properties of the grain, also has someadverse consequences connected with a fall in yield and in resistance to diseases.Field experiments were conducted during three years (2003, 2004and 2005) to evaluate environmental effects on grain yield andquality responses of maize hybrids. Twenty one hybrids of various maturity groups (FAO 150-400) were planted to achieve an optimum(60-70 000 plants per hectare) plant populations and grown under the medium-N (80 kg N ha-1) fertilization. Environmental conditionssignificantly affected maize hybrid responses for grain yield, starch, oil and protein contents, and consequently, starch, oil and proteinyields per hectare. Hybrids of flint type, which have a short vegetation period, had high protein and oil content but the yield averageswere low due to the slower rate of starch incorporation. Hybrids of the dent type have a longer growing season and more intensecarbohydrate accumulation, but low protein and oil contents. In wet years there was a higher rate of starch accumulation, while dryyears are favorable for protein and oil accumulation. Positive correlation existed between starch content and grain yield and 1000-weight as well as between oil content and volumetric weight among tested hybrids. Negatively correlation existed between grain oil andstarch content as well as between oil content and grain yield and 1000-weight. Thus, end-users that require high quality maize may needto provide incentives to growers to off set the negative correlation of grain yield with oil and protein content.

scholarly journals LITHOLOGICAL-CAPACITIVE MODELS OF THE PRODUCTIVE RESERVOIRS OF THE BOBRIKOVSKY HORIZON OF SHIVELEVNII ZONEOF OIL ACCUMULATION OF ORENBURG REGION

2015 ◽  
pp. 24-26
Author(s):  
R. A. Katkov ◽  
V. I. Kisluhin
Keyword(s):  
Oil Accumulation ◽  
Orenburg Region

The article presents lithological-capacitive models of the productive reservoirs of the Bobrikovsky horizon of Shivelevnii zone of oil accumulation of Orenburg region. It focuses on the rocks composing the stratums of the horizon, types of collectors of these stratums, according to which built the lithological-capacitive model necessary for further interpretation of different kinds of data.

scholarly journals Gene expression and DNA methylation altering lead to the high oil content in wild allotetraploid peanut (A. monticola)

2022 ◽  
Author(s):  
Nian Liu ◽  
Manish Pandey ◽  
Bei Wu ◽  
Li Huang ◽  
Huaiyong Luo ◽  
...  
Keyword(s):  
Gene Expression ◽  
Dna Methylation ◽  
Transcription Factors ◽  
Arachis Hypogaea ◽  
Oil Content ◽  
Expression Patterns ◽  
Gene Clusters ◽  
Oil Accumulation ◽  
Species Specific ◽  
Wild Peanut

Abstract The wild allotetraploid peanut Arachis monticola contains higher oil content than cultivated allotetraploid Arachis hypogaea. To investigate its molecular mechanism controlling oil accumulation, we performed comparative transcriptomics from developing seeds between three Arachis monticola and five Arachis hypogaea varieties. The analysis not only showed species-specific grouping based on transcriptional profiles but also detected two gene clusters with divergent expression patterns enriched in lipid metabolism. Further, the differential expression gene analysis also indicated expression alteration in wild peanut leading to enhanced activity of oil biogenesis and limiting the rate of lipid degradation. We also constructed a regulatory network of lipid metabolic DEGs with co-expressed transcription factors. In addition, bisulfite sequencing was conducted to characterize the variation of DNA methylation between wild allotetraploid (245, WH 10025) and cultivated allotetraploid (Z16, Zhh 7720) genotypes. Genome-wide DNA methylation was found antagonistically correlated with gene expression during seed development. The results indicated that CG and CHG contexts methylation may negatively regulate specific lipid metabolic genes and transcription factors to subtly affect the difference of oil accumulation. Our work provided the first glimpse on the regulatory mechanism of gene expression altering for oil accumulation in wild peanut and gene resources for future breeding applications.

scholarly journals Comparative Transcriptome Analysis of Developing Seeds and Silique Wall Reveals Dynamic Transcription Networks for Effective Oil Production in Brassica napus L.

2019 ◽  
Vol 20 (8) ◽  
pp. 1982 ◽  
Author(s):  
Muhammad Shahid ◽  
Guangqin Cai ◽  
Feng Zu ◽  
Qing Zhao ◽  
Muhammad Uzair Qasim ◽  
...  
Keyword(s):  
Brassica Napus ◽  
Seed Development ◽  
Vegetable Oil ◽  
Oil Content ◽  
Seed Oil ◽  
Seed Oil Content ◽  
Oil Accumulation ◽  
Developing Seeds ◽  
Oil Biosynthesis ◽  
Oil Crops

Vegetable oil is an essential constituent of the human diet and renewable raw material for industrial applications. Enhancing oil production by increasing seed oil content in oil crops is the most viable, environmentally friendly, and sustainable approach to meet the continuous demand for the supply of vegetable oil globally. An in-depth understanding of the gene networks involved in oil biosynthesis during seed development is a prerequisite for breeding high-oil-content varieties. Rapeseed (Brassica napus) is one of the most important oil crops cultivated on multiple continents, contributing more than 15% of the world’s edible oil supply. To understand the phasic nature of oil biosynthesis and the dynamic regulation of key pathways for effective oil accumulation in B. napus, comparative transcriptomic profiling was performed with developing seeds and silique wall (SW) tissues of two contrasting inbred lines with ~13% difference in seed oil content. Differentially expressed genes (DEGs) between high- and low-oil content lines were identified across six key developmental stages, and gene enrichment analysis revealed that genes related to photosynthesis, metabolism, carbohydrates, lipids, phytohormones, transporters, and triacylglycerol and fatty acid synthesis tended to be upregulated in the high-oil-content line. Differentially regulated DEG patterns were revealed for the control of metabolite and photosynthate production in SW and oil biosynthesis and accumulation in seeds. Quantitative assays of carbohydrates and hormones during seed development together with gene expression profiling of relevant pathways revealed their fundamental effects on effective oil accumulation. Our results thus provide insights into the molecular basis of high seed oil content (SOC) and a new direction for developing high-SOC rapeseed and other oil crops.

scholarly journals Identification of Key Genes Involved in Embryo Development and Differential Oil Accumulation in Two Contrasting Maize Genotypes

Genes ◽  
2019 ◽  
Vol 10 (12) ◽  
pp. 993 ◽  
Author(s):  
Xiangxiang Zhang ◽  
Meiyan Hong ◽  
Heping Wan ◽  
Lixia Luo ◽  
Zeen Yu ◽  
...  
Keyword(s):  
Fatty Acid ◽  
Embryo Development ◽  
Oil Content ◽  
Fatty Acid Biosynthesis ◽  
Developmental Stages ◽  
Enrichment Analysis ◽  
Sequencing Analysis ◽  
Oil Accumulation ◽  
Maize Genotypes ◽  
Maize Embryo

Maize is an important oil seed crop and a major food crop in different parts of the world. Since maize has relatively lower seed oil content as compared to other oil crops, efforts are continuing to improve its oil content percentage. In this study, we analyzed two contrasting maize genotypes with differential oil accumulation percentages. High oil-content (HOC) maize had 11% oil content while low oil-content (LOC) maize had significantly lower oil content (5.4%). Transmission electron microscopy revealed a higher accumulation of oil bodies in the HOC maize embryo as compared to LOC maize. Comparative RNA-sequencing analysis at different developmental stages of the seed embryos identified 739 genes that are constantly differentially expressed (DEGs) at all the six developmental stages from 15 days after pollination (DAP) to 40 DAP. Kyoto Encyclopedia of Genes and Genomes (KEGG) enrichment analysis identified fatty acid metabolism and fatty acid biosynthesis as the most enriched biological pathways contributed by these DEGs. Notably, transcriptional changes are more intense at the early stages of embryo development as compared to later stages. In addition, pathways related to oil biosynthesis and their corresponding genes were more enriched at 30 DAP, which seems to be the key stage for oil accumulation. The study also identified 33 key DEGs involved in fatty acid and triacylglycerols biosynthesis, most of which were up-regulated in HOC, that may shape the differential oil contents in the two contrasting maize. Notably, we discovered that both acyl-CoA-dependent and acyl-CoA-independent processes are essential for the high oil accumulation in maize embryo.

Effect of sulfur fertilisation on oil accumulation, acetyl-CoA concentration, and acetyl-CoA carboxylase activity in the developing seeds of rapeseed (Brassica campestris L.)

2000 ◽  
Vol 51 (8) ◽  
pp. 1023 ◽  
Author(s):  
Altaf Ahmad ◽  
Ishrat Khan ◽  
M. Z. Abdin
Keyword(s):  
Oil Content ◽  
Brassica Campestris ◽  
Sugar Content ◽  
Soluble Sugar ◽  
Growth Stages ◽  
Acetyl Coa Carboxylase ◽  
Acetyl Coa ◽  
Oil Accumulation ◽  
Carboxylase Activity ◽  
Developing Seeds

The effect of sulfur (S) fertilisation on oil accumulation, acetyl-CoA concentration, and activity of acetyl-CoA carboxylase (EC 6.4.1.2) was determined in the developing seeds of rapeseed (Brassica campestris L. cv. Pusa Gold) grown in the field with and without S. The period between 14 and 35 days after flowering (DAF) was identified as the active period of oil accumulation in the developing seeds of rapeseed. The accumulation of oil was preceded by a marked rise in acetyl-CoA carboxylase activity and acetyl-CoA concentration, which declined rapidly when oil accumulation reached a plateau. Starch and soluble sugar content decreased, while protein content increased during the period of active oil accumulation in the developing seeds (i.e. 14–35 DAF). Sulfur fertilisation significantly (P < 0.05) enhanced the oil accumulation in the developing seeds at all the growth stages except at 7 DAF. The increase in the oil content was 13.0–52.0% with S fertilisation over the control treatment. Sulfur fertilisation also increased acetyl-CoA concentration, acetyl-CoA carboxylase activity, and soluble protein, sugar, and starch content in the developing seeds. It is suggested that the increase in the oil content with S fertilisation may be associated with increases in acetyl-CoA carboxylase activity through the enhancement of acetyl-CoA concentration. Further, the increased sugar content due to S fertilisation provided enough carbon sources for oil biosynthesis.

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