Frontiers in bioscience (Elite edition)最新文献

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Obtaining Melanin-Synthesizing Strains of Bacillus thuringiensis and their Use for Biological Preparations. 获得苏云金芽孢杆菌黑色素合成菌株及其在生物制剂中的应用。
Frontiers in bioscience (Elite edition) Pub Date : 2024-08-13 DOI: 10.31083/j.fbe1603027
Sona Avetisyan, Anichka Hovsepyan, Lusine Saghatelyan, Haykanush Koloyan, Olga Chizhik, Susanna Hovhannisyan, Marina Paronyan
{"title":"Obtaining Melanin-Synthesizing Strains of <i>Bacillus thuringiensis</i> and their Use for Biological Preparations.","authors":"Sona Avetisyan, Anichka Hovsepyan, Lusine Saghatelyan, Haykanush Koloyan, Olga Chizhik, Susanna Hovhannisyan, Marina Paronyan","doi":"10.31083/j.fbe1603027","DOIUrl":"https://doi.org/10.31083/j.fbe1603027","url":null,"abstract":"<p><strong>Background: </strong>A pivotal objective in crop production and plant protection lies in developing environmentally friendly insecticidal preparations and biostimulants.</p><p><strong>Methods: </strong>We employed <i>Bacillus thuringiensis</i> strains with varied insecticidal spectra and engineered melanogenic mutants.</p><p><strong>Results: </strong>We demonstrated a significant increase in insecticidal activity in the isolated mutants. Meanwhile, there was no observable impact of the enhanced synthesis of water-soluble melanin on the nature and abundance of spore and crystal formation. This heightened efficacy can be attributed to the photoprotective qualities of the synthesized pigment, shielding spores and crystals against the detrimental effects of UV radiation and insolation. We demonstrated the high biological activity of water-soluble bacterial melanin through <i>in vivo</i> experiments involving multiple plant species.</p><p><strong>Conclusions: </strong>Our findings indicate that bacterial melanin is a potent phytostimulant. This preparation accelerates and amplifies plant growth and development processes, leading to a substantial increase in crop yield by 20-40%. The simultaneous synthesis of two biologically active substance, melanin and insecticidal toxins, ensures an elevated level of effectiveness in utilizing melaninogenic strains.</p>","PeriodicalId":73068,"journal":{"name":"Frontiers in bioscience (Elite edition)","volume":"16 3","pages":"27"},"PeriodicalIF":0.0,"publicationDate":"2024-08-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142333673","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Implementation of a Macroporous Polyhydroxyethylmethacrylate Cryogel-Based Mini-Bioreactor System to Improve Monoclonal Antibody Production. 实施基于大孔聚羟乙基甲基丙烯酸酯冷冻凝胶的微型生物反应器系统,提高单克隆抗体的生产。
Frontiers in bioscience (Elite edition) Pub Date : 2024-08-07 DOI: 10.31083/j.fbe1603026
Jyothilekshmi Indiramma, Kishore K R Tetala, N S Jayaprakash
{"title":"Implementation of a Macroporous Polyhydroxyethylmethacrylate Cryogel-Based Mini-Bioreactor System to Improve Monoclonal Antibody Production.","authors":"Jyothilekshmi Indiramma, Kishore K R Tetala, N S Jayaprakash","doi":"10.31083/j.fbe1603026","DOIUrl":"https://doi.org/10.31083/j.fbe1603026","url":null,"abstract":"<p><strong>Background: </strong>Monoclonal antibodies (mAbs) are pioneers in the diagnosis and treatment of many diseases, such as cancer, asthma, poisoning, viral infections, etc. As the market value of mAbs increases in the biopharma industry, the demand for high quantities is met by upscaled production using bioreactor systems. Thus, disposable, porous matrices called cryogels have gained the primary focus for adherent support in the proliferation of hybridoma cells.</p><p><strong>Methods: </strong>In this study, a gelatin-immobilized polyhydroxyethylmethacrylate-based cryogel material (disc-shaped, 9 mL bed volume) was synthesized, and a mini-bioreactor set up developed for culturing hybridoma cells to produce mAbs continuously. The hybridoma clone, 1B4A2D5, secreting anti-human serum albumin monoclonal antibodies, was immobilized in the cryogel matrix (2 discs, 18 mL bed volume).</p><p><strong>Results: </strong>The hybridoma cells were attached to the matrix within 12 h after inoculation, and the cells were in the lag phase for seven days, where they were secreted mAb into the circulation medium. During the initial exponential phase, the glucose consumption, lactic acid production, and mAb production were 3.36 mM/day, 3.67 mM/day, and 55.61 µg/mL/day, respectively. The medium was refreshed whenever the glucose in the media went below 50% of the initial glucose concentration. The cryogenic reactor was run continuously for 25 days, and the mAb concentration reached a maximum on the 17th day at 310.59 µg/mL.</p><p><strong>Conclusion: </strong>The cumulative amount of mAbs produced in 25 days of running was 246 µg/mL, 7.7 times higher than the mAbs produced from T-flask batch cultivation. These results demonstrate that the developed polyhydroxyethylmethacrylate-based cryogel reactor can be used efficiently for continuous mAb production.</p>","PeriodicalId":73068,"journal":{"name":"Frontiers in bioscience (Elite edition)","volume":"16 3","pages":"26"},"PeriodicalIF":0.0,"publicationDate":"2024-08-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142333672","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Developing Self-Nanoemulsifying Drug Delivery Systems Comprising an Artemether-Lumefantrine Fixed-Dose Combination to Treat Malaria. 开发自纳米乳化给药系统,其中包含治疗疟疾的蒿甲醚-鲁米芬特林固定剂量复方制剂。
Frontiers in bioscience (Elite edition) Pub Date : 2024-08-05 DOI: 10.31083/j.fbe1603025
Joe M Viljoen, Lauren Cilliers, Lissinda H du Plessis
{"title":"Developing Self-Nanoemulsifying Drug Delivery Systems Comprising an Artemether-Lumefantrine Fixed-Dose Combination to Treat Malaria.","authors":"Joe M Viljoen, Lauren Cilliers, Lissinda H du Plessis","doi":"10.31083/j.fbe1603025","DOIUrl":"https://doi.org/10.31083/j.fbe1603025","url":null,"abstract":"<p><strong>Background: </strong>Despite attempts to control malaria, poor drug bioavailability means malaria still places enormous pressure on health globally. It has been found that the solubility of highly lipophilic compounds can be enhanced through lipid formulations, e.g., self-emulsifying drug delivery systems (SEDDSs). Thus, quality-by-design and characterization were used to justify the development and determine the feasibility of oral oil-in-water SEDDSs comprising a fixed-dose combination (FDC) of artemether-lumefantrine to treat malaria more effectively without the aid of a fatty meal. These formulations were compared to a commercial product containing the same active compounds.</p><p><strong>Methods: </strong>Excipient compatibility and spontaneous emulsification capacity of different FDC-excipient combinations were identified by employing isothermal microcalorimetry, solubility, and water titration tests. Pseudoternary phase diagrams were constructed, and checkpoint formulations were selected within the self-emulsification region by reviewing formulation properties essential for optimized drug delivery. SEDDSs capable of enduring phase separation within 24 h were subjected to characterization experiments, i.e., drug concentration determination, cloud point, droplet size, size distribution, self-emulsification time, self-emulsification efficacy, viscosity, zeta potential, and thermodynamic stability analysis. SEDDSs with favorable characteristics were identified in the micro or nano range (SNEDDSs) before being subjected to drug release studies.</p><p><strong>Results: </strong>All final formulations depicted enhanced artemether and lumefantrine release compared to the commercial product, which could not release lumefantrine at a quantifiable concentration in this study. The avocado oil (AVO)4:6 and olive oil (OLV)3:7 SNEDDSs overall portrayed the ideal characteristics and depicted the highest percentage of drug release.</p><p><strong>Conclusions: </strong>This study offers evidence that SNEDDSs from selected natural oils comprising an artemether-lumefantrine FDC can potentially enhance the bioavailability of these lipophilic drugs.</p>","PeriodicalId":73068,"journal":{"name":"Frontiers in bioscience (Elite edition)","volume":"16 3","pages":"25"},"PeriodicalIF":0.0,"publicationDate":"2024-08-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142333671","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
miR-215-5p Plays a Key Role in Suppressing Vascular Invasion and Recurrence in Hepatocellular Carcinoma by Blocking Vasculogenic Mimicry. miR-215-5p 通过阻断血管生成模拟在抑制肝细胞癌血管侵袭和复发中发挥关键作用
Frontiers in bioscience (Elite edition) Pub Date : 2024-02-27 DOI: 10.31083/j.fbe1601006
Heng Zhang, Xi Lan, Liquan Cai, Xunfeng Gao, Feng Gao, Dan Yu, Jinlong Zhang, Jinhui Zhang, Qinwen Tai
{"title":"miR-215-5p Plays a Key Role in Suppressing Vascular Invasion and Recurrence in Hepatocellular Carcinoma by Blocking Vasculogenic Mimicry.","authors":"Heng Zhang, Xi Lan, Liquan Cai, Xunfeng Gao, Feng Gao, Dan Yu, Jinlong Zhang, Jinhui Zhang, Qinwen Tai","doi":"10.31083/j.fbe1601006","DOIUrl":"10.31083/j.fbe1601006","url":null,"abstract":"<p><strong>Background: </strong>This research explores the significance of miR-215-5p and vasculogenic mimicry (VM) in forecasting the prognosis for hepatocellular carcinoma (HCC).</p><p><strong>Methods: </strong>We analyzed HCC-associated miRNA expression profiles using data from The Cancer Genome Atlas (TCGA) and the Gene Expression Omnibus (GEO). Samples included tissue and blood from 80 early-stage HCC patients and serum from 120 healthy individuals. Reverse transcription-quantitative polymerase chain reaction (RT-qPCR) was employed to measure miR-215-5p and zinc finger E-box binding homeobox 2 (<i>ZEB2</i>) gene expressions. Hematoxylin and eosin (H&E) and CD34/Periodic Acid-Schiff (PAS) double staining assessed VM presence in HCC tissue sections. Bioinformatics tools predicted interactions between miR-215-5p and <i>ZEB2</i>, confirmed through luciferase reporter assays. We also examined the impact of miR-215-5p or <i>ZEB2</i> overexpression on HCC cell invasion, migration, and VM formation using scratch, Transwell invasion assays, and Matrigel 3D cultures.</p><p><strong>Results: </strong>Bioinformatics analysis indicated that miR-215-5p was under-expressed in HCC, particularly in cases with vascular invasion, which correlated with worse patient outcomes. In contrast, <i>ZEB2</i>, targeted by miR-215-5p, was overexpressed in HCC. RT-qPCR validated these expression patterns in HCC tissues. Among the HCC patients, 38 were VM positive and 42 VM negative. Logistic regression highlighted a negative correlation between miR-215-5p levels and VM positivity in HCC tissues and a positive correlation for <i>ZEB2</i> with VM positivity and tumor vascular invasion. Lower miR-215-5p levels were linked to increased HCC recurrence and metastasis. Both bioinformatics analysis and luciferase assays demonstrated a direct interaction between miR-215-5p and <i>ZEB2</i>. Enhancing miR-215-5p levels reduced <i>ZEB2</i> expression, consequently diminishing invasion, migration, and VM formation of the HCC cells <i>in vitro</i>.</p><p><strong>Conclusions: </strong>miR-215-5p expression inversely correlates with VM occurrence in HCC tissues, while <i>ZEB2</i> expression shows a direct correlation. By targeting <i>ZEB2</i>, miR-215-5p may hinder VM in HCC tissues, helping to prevent vascular invasion and HCC recurrence. Thus, miR-215-5p emerges as a vital prognostic indicator for predicting vascular invasion and recurrence in HCC.</p>","PeriodicalId":73068,"journal":{"name":"Frontiers in bioscience (Elite edition)","volume":"16 1","pages":"6"},"PeriodicalIF":0.0,"publicationDate":"2024-02-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140308179","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Fluorescence Polarization Assays for Organic Compounds in Food Safety. 食品安全中有机化合物的荧光极化测定。
Frontiers in bioscience (Elite edition) Pub Date : 2024-01-31 DOI: 10.31083/j.fbe1601004
Liliya I Mukhametova, Sergei A Eremin
{"title":"Fluorescence Polarization Assays for Organic Compounds in Food Safety.","authors":"Liliya I Mukhametova, Sergei A Eremin","doi":"10.31083/j.fbe1601004","DOIUrl":"10.31083/j.fbe1601004","url":null,"abstract":"<p><p>Elevated concentrations of toxic organic compounds observed in food products pose serious dangers to human health. Both natural and artificial pollutants can cause food contamination. The stages of food production, packaging, transportation, and storage can also largely cause the appearance of undesirable substances in food products. The health consequences of ingesting food containing toxic contaminants range from mild gastroenteritis to deaths resulting from dysfunctional internal organs and neurological syndromes. The World Health Organization (WHO) sets recommendations for the content of such chemicals in food, including a minimum allowable concentration considered safe for human consumption. However, the control of food products from chemical pollutants is necessary. Moreover, fast, sensitive, and inexpensive methods are needed to detect them at the point of need. Currently, immune analysis methods are most widely used to determine pollutants in food. The development of fluorescence polarization immunoassay (FPIA) methods in a competitive format is a powerful and modern tool for detecting organic molecules in various matrices, thereby making FPIA methods useful for food safety applications. Due to the availability of portable devices for measuring the fluorescence polarization signal, FPIA methods can be used at the point of need. The variety of fluorescent labels and recognizing elements (receptors, monoclonal and polyclonal antibodies, and nanobodies) permits fluorescence polarization (FP) assays to detect significantly lower limits of organic substances. The FP assay is a homogeneous, fast, and quantitative method. The development of various formats of FP assays makes them promising in determining food pollutants. This review summarizes publications on FP analyses for detecting organic contaminants (pesticides, hormones, toxins, antibiotics, and other pharmaceuticals) in food products during 2018-2023. Further, it demonstrates the prospects for using this method to determine pollutants at the point of need and for detecting high molecular weight substances, fungi, and bacterial infections during food safety inspections.</p>","PeriodicalId":73068,"journal":{"name":"Frontiers in bioscience (Elite edition)","volume":"16 1","pages":"4"},"PeriodicalIF":0.0,"publicationDate":"2024-01-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140308167","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Xrn1 Exoribonuclease-An Intrinsic Marker of Yeast Population Growth. Xrn1 外核酸酶--酵母种群增长的内在标志物
Frontiers in bioscience (Elite edition) Pub Date : 2024-01-31 DOI: 10.31083/j.fbe1601001
Tomas Grousl, Tomas Vomastek
{"title":"Xrn1 Exoribonuclease-An Intrinsic Marker of Yeast Population Growth.","authors":"Tomas Grousl, Tomas Vomastek","doi":"10.31083/j.fbe1601001","DOIUrl":"10.31083/j.fbe1601001","url":null,"abstract":"<p><strong>Background: </strong>Xrn1 exoribonuclease is the major mRNA degradation enzyme in <i>Saccharomyces cerevisiae.</i> In exponentially growing cells, Xrn1 is localised in the yeast cells and directs the degradation of mRNA molecules. Xrn1 is gradually deposited and presumably inactivated in the processing bodies (P-bodies) as the yeast population ages. Xrn1 can also localise to the membrane compartment of the arginine permease Can1/eisosome compartment at the yeast plasma membrane. This localisation correlates with the metabolic (diauxic) shift from glucose fermentation to respiration, although the relevance of this Xrn1 localisation remains unknown.</p><p><strong>Methods: </strong>We monitored the growth rates and morphology of Xrn1-green fluorescent protein (GFP) cells compared to wild-type and Δ<i>xrn1</i> cells and observed the Xrn1-GFP localisation pattern in different media types for up to 72 hours using fluorescence microscopy.</p><p><strong>Results: </strong>We present the dynamic changes in the localisation of Xrn1 as a versatile tool for monitoring the growth of yeast populations at the single-cell level using fluorescence microscopy.</p><p><strong>Conclusions: </strong>The dynamic changes in the localisation of Xrn1 can be a versatile tool for monitoring the growth of yeast populations at the single-cell level. Simultaneously, Xrn1 localisation outside of P-bodies in post-diauxic cells supports its storage and cytoprotective function, yet the role of P-bodies in cell metabolism has still not yet been entirely elucidated.</p>","PeriodicalId":73068,"journal":{"name":"Frontiers in bioscience (Elite edition)","volume":"16 1","pages":"1"},"PeriodicalIF":0.0,"publicationDate":"2024-01-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140308181","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Soy-Based Tempeh as a Functional Food: Evidence for Human Health and Future Perspective. 作为功能性食品的大豆豆豉:人类健康证据与未来展望》(Soy-Based Tempeh as a Functional Food: Evidence for Human Health and Future Perspective.
Frontiers in bioscience (Elite edition) Pub Date : 2024-01-31 DOI: 10.31083/j.fbe1601003
Gianluca Rizzo
{"title":"Soy-Based Tempeh as a Functional Food: Evidence for Human Health and Future Perspective.","authors":"Gianluca Rizzo","doi":"10.31083/j.fbe1601003","DOIUrl":"10.31083/j.fbe1601003","url":null,"abstract":"<p><p>Tempeh is an Indonesian traditional food made from fermented soybeans, which offers wide culinary use in East Asian countries. Similar to all fermented foods, its preparation offers the purpose of food preservation. However, preclinical studies have highlighted that microbial action leads to a modification in the nutritional composition of the food's matrix. Although there is a wide availability of data on the beneficial effect of soy, tempeh remains relatively unexplored, perhaps due to its limited diffusion in the world, which limits its research availability. However, available data suggest that tempeh may confer beneficial health effects due to the high bioavailability of nutrients and phytochemicals, showing ameliorative action on oxidative stress, glycaemic control, and blood lipid levels. Furthermore, the high biological value of tempeh means it can be used to optimize protein and caloric intake in athletes, vegetarians, and children. Moreover, the microbial fermentation used in the production of tempeh, in addition to improving the bioavailability of minerals, proteins, fibre, vitamins, and isoflavones, produces biopeptides whose biological effect is currently of great interest. Tempeh can be employed in traditional preparations as well as second-generation foods, such as plant-based meat substitutes, to provide functional and nutritional properties and a higher eco-friendly option compared to animal foods. This review aims to provide an overview of tempeh's properties, regarding human data and future research perspectives.</p>","PeriodicalId":73068,"journal":{"name":"Frontiers in bioscience (Elite edition)","volume":"16 1","pages":"3"},"PeriodicalIF":0.0,"publicationDate":"2024-01-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140308180","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Approaches for Producing Fungal Cellulases Through Submerged Fermentation. 通过浸没发酵生产真菌纤维素酶的方法。
Frontiers in bioscience (Elite edition) Pub Date : 2024-01-31 DOI: 10.31083/j.fbe1601005
Madiha Nazir, Attia Iram, Deniz Cekmecelioglu, Ali Demirci
{"title":"Approaches for Producing Fungal Cellulases Through Submerged Fermentation.","authors":"Madiha Nazir, Attia Iram, Deniz Cekmecelioglu, Ali Demirci","doi":"10.31083/j.fbe1601005","DOIUrl":"10.31083/j.fbe1601005","url":null,"abstract":"<p><p>Fungal cellulases are the most sought-after biological molecules produced from microbial sources in the last four decades. Owing to their emerging applications in the bioenergy industry for hydrolyzing cellulose, for which they are the most abundant source on this planet, research trends are shifting heavily toward adapting to submerged fermentation. However, filamentous fungal species, which are efficient cellulase producers, are well-adapted to low-moisture solid support as the substrate, such as in nature. Therefore, various fermentation strategies are currently being investigated to adapt them to submerged fermentation for large and high-quality production of cellulases. Emerging research trends, such as the use of inexpensive feedstocks, nutrient and/or culture optimization, innovative bioreactor designs, microparticle-assisted fungal growth, and innovative genetic engineering approaches, are some of the recent efforts by researchers to exploit the full potential of these biological molecules. This review discusses some of these strategies and their success rates in various research conditions. In addition, specific focus was provided to both increasing the market value of cellulases and the innovative strategies required to enhance their production on an industrial scale.</p>","PeriodicalId":73068,"journal":{"name":"Frontiers in bioscience (Elite edition)","volume":"16 1","pages":"5"},"PeriodicalIF":0.0,"publicationDate":"2024-01-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140308165","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Emerging Trends in Wheat (Triticum spp.) Breeding: Implications for the Future. 小麦(Triticum spp.)育种的新趋势:对未来的影响。
Frontiers in bioscience (Elite edition) Pub Date : 2024-01-31 DOI: 10.31083/j.fbe1601002
Mujahid Alam, P Stephen Baenziger, Katherine Frels
{"title":"Emerging Trends in Wheat (<i>Triticum</i> spp.) Breeding: Implications for the Future.","authors":"Mujahid Alam, P Stephen Baenziger, Katherine Frels","doi":"10.31083/j.fbe1601002","DOIUrl":"10.31083/j.fbe1601002","url":null,"abstract":"<p><p>Wheat (<i>Triticum</i> spp and, particularly, <i>T. aestivum</i> L.) is an essential cereal with increased human and animal nutritional demand. Therefore, there is a need to enhance wheat yield and genetic gain using modern breeding technologies alongside proven methods to achieve the necessary increases in productivity. These modern technologies will allow breeders to develop improved wheat cultivars more quickly and efficiently. This review aims to highlight the emerging technological trends used worldwide in wheat breeding, with a focus on enhancing wheat yield. The key technologies for introducing variation (hybridization among the species, synthetic wheat, and hybridization; genetically modified wheat; transgenic and gene-edited), inbreeding (double haploid (DH) and speed breeding (SB)), selection and evaluation (marker-assisted selection (MAS), genomic selection (GS), and machine learning (ML)) and hybrid wheat are discussed to highlight the current opportunities in wheat breeding and for the development of future wheat cultivars.</p>","PeriodicalId":73068,"journal":{"name":"Frontiers in bioscience (Elite edition)","volume":"16 1","pages":"2"},"PeriodicalIF":0.0,"publicationDate":"2024-01-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140308166","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Isolation and Identification of Phenol-Degrading Bacteria from Iranian Soil and Leaf Samples. 伊朗土壤和叶片样本中苯酚降解细菌的分离与鉴定
Frontiers in bioscience (Elite edition) Pub Date : 2023-12-12 DOI: 10.31083/j.fbe1504029
Atefehsadat Mortazavi, Mehdi Hassanshahian, Eyhab Ali, Mohammed N Fenjan, Ahmed Alawadi, Ali Alsalamy
{"title":"Isolation and Identification of Phenol-Degrading Bacteria from Iranian Soil and Leaf Samples.","authors":"Atefehsadat Mortazavi, Mehdi Hassanshahian, Eyhab Ali, Mohammed N Fenjan, Ahmed Alawadi, Ali Alsalamy","doi":"10.31083/j.fbe1504029","DOIUrl":"10.31083/j.fbe1504029","url":null,"abstract":"<p><strong>Background: </strong>By considering the importance and role of soil in the health of humanity, it is important to remove the presence of harmful compounds, such as phenol.</p><p><strong>Methods: </strong>In this study, four types of soil and leaf samples were collected from Kerman, Iran, and the amounts of heterotrophic and degradation bacteria were determined using the serial dilution and most probable number (MPN) methods. The amount of removed phenol was investigated using the Gibbs method with different concentrations of phenol. Then, an isolate with the highest percentage of phenol degradation was identified as the superior strain using 16 sRNA sequencing. The effects of the different factors, such as the carbon source (1% molasses and 1 g glucose), nitrogen source (0.1 g yeast extract), mixed culture, and time (14 and 28 days), on the biodegradation ability of the superior strain was investigated.</p><p><strong>Results: </strong>A total of 18 bacterial strains were isolated from the samples. Isolate B3 had the highest rate (75%) of phenol degradation, at a concentration of 1000 ppm, meaning it was identified as the superior strain. The molecular analysis results identified this isolate as the <i>Comamonas testosteroni</i> strain F4. This bacterium can degrade 89% of the phenol at 30 °C, 180 rpm, and 800 ppm over 28 days. <i>C. testosteroni</i> did not show a favorable phenol degradation ability in the presence of the investigated carbon sources, while this ability was also reduced in mixed cultures.</p><p><strong>Conclusions: </strong><i>C. testosteroni</i> bacterial strain isolated from soil samples of pistachio orchards in Kerman, Iran, has a favorable ability to biodegrade phenol.</p>","PeriodicalId":73068,"journal":{"name":"Frontiers in bioscience (Elite edition)","volume":"15 4","pages":"29"},"PeriodicalIF":0.0,"publicationDate":"2023-12-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139076066","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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