crop improvement

作物改良
  • 文章类型: Journal Article
    结论:这篇综述讨论了小米手指丰富的营养成分,生物活性潜力,和工业应用,结合其气候恢复力,这使其成为增强粮食安全和促进可持续农业的有希望的作物。本综述还强调了其在解决营养不良和减轻气候变化影响方面的巨大潜力。从“穷人的主食”到“营养丰富的谷物”的出现,促使人们有必要在更广泛的范围内探索这种作物。由于其丰富的营养和生物活性特征,它是一种非常重要的作物,多样的生物活动,和有前途的工业应用,以及高的气候适应力。这项全面的审查通过与其他谷物和小米进行比较,并强调其解决营养不良和增强粮食安全的潜力,来评估其营养成分。此外,它探讨了植物化学/生物活性潜力和策略,以提高其生物利用度,然后通过强调其各种健康促进特性的手指小米的生物活性。该评论还讨论了手指小米的工业潜力,包括其在营养和功能性食品生产中的作用,以及生物能源生产。此外,小米作为气候适应作物的作用;特别是,还讨论了与主要胁迫耐受性性状相关的可用遗传资源以及基因和数量性状基因座(QTL)的鉴定。通过提供现有知识的全面综合,这项研究为研究人员提供了宝贵的见解,政策制定者,和利益攸关方参与促进可持续农业的努力,加强粮食和营养安全,减轻气候变化的影响。
    CONCLUSIONS: This review discusses the Finger millet\'s rich nutritional profile, bioactive potential, and industrial applications, combined with its climate resilience, which make it a promising crop for enhancing food security and promoting sustainable agriculture. This review also highlights its significant potential to address malnutrition and mitigate climate change impacts. The emergence of Finger millet from \"poor man\'s staple food\" to \"a nutrient rich cereal\" has encouraged the need to explore this crop at a wider scale. It is a highly significant crop due to its rich nutritional and bioactive profile, diverse biological activities, and promising industrial applications, along with the high climate resilience. This comprehensive review evaluates its nutritional composition by comparing favorably with other cereals and millets and emphasizing its potential to address malnutrition and enhance food security. Furthermore, it explores the phytochemical/bioactive potential and strategies to enhance their bioavailability followed biological activities of Finger millet by highlighting its various health-promoting properties. The review also discusses industrial potential of finger millet including its role in nutraceutical and functional food production, as well as bioenergy generation. In addition, role of Finger millet as a climate-resilient crop; specifically, the available genetic resources and identification of genes and quantitative trait loci (QTLs) associated with major stress tolerance traits have also been discussed. By providing a comprehensive synthesis of existing knowledge, this study offers valuable insights for researchers, policymakers, and stakeholders engaged in efforts to promote sustainable agriculture, enhance food and nutrition security, and mitigate the impacts of climate change.
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  • 文章类型: Journal Article
    基因工程已成为开发气候适应作物和环境可持续解决方案的基本要素,以应对日益增长的全球粮食安全需求。使用CRISPR/Cas[簇状调节间隔短回文重复序列(CRISPR)相关蛋白(Cas)]技术进行基因组编辑正在应用于各种生物体,包括植物。这种技术由于其高度的特异性而变得流行,有效性,生产成本低。因此,这项技术有可能彻底改变农业,并为全球粮食安全做出贡献。在过去的几年里,在开发高产方面的应用越来越努力,营养丰富,抗病,和耐胁迫的“作物”,水果,和蔬菜。Cas蛋白,如Cas9,Cas12,Cas13和Cas14等,具有独特的体系结构,并已用于创建新的遗传工具,以改善对农业重要的特征。Cas的多功能性加速了基因组分析,并促进了使用CRISPR/Cas来操纵和改变不同生物体细胞中的核酸序列。这篇综述提供了CRISPR技术的发展,探索了其机制,并将其与传统育种和转基因方法进行了对比,以提高胁迫耐受性的不同方面。我们还讨论了CRISPR/Cas系统,并探索了目前已知存在的三种Cas蛋白:Cas12、Cas13和Cas14,以及它们产生无外源DNA或非转基因作物的潜力,这些作物可以很容易地在大多数国家进行商业化调控。
    Genetic engineering has become an essential element in developing climate-resilient crops and environmentally sustainable solutions to respond to the increasing need for global food security. Genome editing using CRISPR/Cas [Clustered regulatory interspaced short palindromic repeat (CRISPR)-associated protein (Cas)] technology is being applied to a variety of organisms, including plants. This technique has become popular because of its high specificity, effectiveness, and low production cost. Therefore, this technology has the potential to revolutionize agriculture and contribute to global food security. Over the past few years, increasing efforts have been seen in its application in developing higher-yielding, nutrition-rich, disease-resistant, and stress-tolerant \"crops\", fruits, and vegetables. Cas proteins such as Cas9, Cas12, Cas13, and Cas14, among others, have distinct architectures and have been used to create new genetic tools that improve features that are important for agriculture. The versatility of Cas has accelerated genomic analysis and facilitated the use of CRISPR/Cas to manipulate and alter nucleic acid sequences in cells of different organisms. This review provides the evolution of CRISPR technology exploring its mechanisms and contrasting it with traditional breeding and transgenic approaches to improve different aspects of stress tolerance. We have also discussed the CRISPR/Cas system and explored three Cas proteins that are currently known to exist: Cas12, Cas13, and Cas14 and their potential to generate foreign-DNA-free or non-transgenic crops that could be easily regulated for commercialization in most countries.
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  • 文章类型: Journal Article
    诱变效果和效率是决定诱变育种成功与否的最重要因素,一种快速增强作物多样性的连贯工具。这项研究是在旁遮普邦可爱专业大学的农业研究农场进行的,印度,在2023年。实验设计遵循随机完全区组设计(RCBD),重复三次。该实验旨在评估三种化学诱变剂的作用,叠氮化钠(SA),甲基磺酸乙酯(EMSs),和甲磺酸甲酯(MMS),在三种不同的浓度(0.2%,0.4%,和0.6%),在SL958和SL744大豆品种中选择产量最高的突变体。通过SPSS软件(版本22)使用双向ANOVA检验收集和分析数据,并且使用Duncan的多范围检验(DMRT)在5%的显著性水平下分离平均值。在这两个品种之间,在SL958(0.4%SA)中记录了最高的种子发芽率(76.0%幼苗/地块),与对照相比,在0.6%的MMS中观察到最低(30.33%的幼苗/地块)(播种后10天,SL744和SL958中分别为53%和76%,分别)。播种几周后,在SL958(0.4%SA)中观察到平均植物高度较高(37.84±1.32cm),在SL744(0.6%SA)中观察到较低(20.58±0.30cm),与对照组相比(SL958:26.09±0.62cm和SL744:27.48±0.74cm)。与对照(SL744180.00±1.63和SL958160.73±1.05)相比,SL958(0.4%SA)中的平均叶片计数最高(234.33±3.09四叶片/植物),而在0.6%MMS中最低(87叶片/植物)。SL958和SL744M1植物中记录的最高总叶面积分别为3625.8±1.43cm2和2311.03±3.65cm2。用0.4%SA处理的SL958品种的种子,与通过EMS处理获得的窄五角叶片相比,产生了具有宽叶基部和最大产量(277.55±1.37豆荚/株)的四角叶片。同时,在SL744品种中,与对照(SL744164.33±8.58和SL958229.86±0.96)相比,相同的处理导致了四角叶片的产量相对较低,为206.54±23.47豆荚/植物。在SL958(0.4%SA)M2种子中记录到最高的蛋白质含量(47.04±0.87%TSP),其次是在SL744(0.4%SA)M2种子中的46.14±0.64%TSP含量。而最低含量(38.13±0.81%TSP)在SL958(0.6%MMS)中发现。对于脂质和纤维含量记录了类似的观察结果。SL958中的0.4%SA处理被证明可以有效地产生最高的叶面积(四叶片)和M1(突变后的第一代)植物的合理产量。
    Mutagenic effectiveness and efficiency are the most important factors determining the success of mutation breeding, a coherent tool for quickly enhancing diversity in crops. This study was carried out at Lovely Professional University\'s agricultural research farm in Punjab, India, during the year 2023. The experimental design followed a randomized complete block design (RCBD) with three replications. The experiment aimed to assess the effect of three chemical mutagens, sodium azide (SA), ethyl methyl sulphonates (EMSs), and methyl methane sulfonate (MMS), at three different concentrations (0.2%, 0.4%, and 0.6%), in SL958 and SL744 soybean varieties to select the mutant exhibiting the highest yield. The data were collected and analysed using a two-way ANOVA test through SPSS software (version 22), and the means were separated using Duncan\'s multiple range test (DMRT) at the 5% level of significance. Between the two varieties, the highest seed germination percentage (76.0% seedlings/plot) was recorded in SL958 (0.4% SA), while the lowest (30.33% seedlings/plot) was observed in 0.6% MMS as compared to the control (53% and 76% in SL744 and SL958 at 10 days after sowing, respectively). Several weeks after sowing, the average plant height was observed to be higher (37.84 ± 1.32 cm) in SL958 (0.4% SA) and lower (20.58 ± 0.30 cm) in SL744 (0.6% SA), as compared to the controls (SL958: 26.09 ± 0.62 cm and SL744: 27.48 ± 0.74 cm). The average leaf count was the highest (234.33 ± 3.09 tetrafoliate leaves/plant) in SL958 (0.4% SA) while it was the lowest (87 leaves/plant) in 0.6% MMS as compared to the control (SL744 180.00 ± 1.63 and SL958 160.73 ± 1.05). The highest total leaf areas recorded in the SL958 and SL744 M1plants were 3625.8 ± 1.43 cm2 and 2311.03 ± 3.65 cm2, respectively. Seeds of the SL958 variety treated with 0.4% SA resulted in the development of tetrafoliate leaves with a broad leaf base and the maximum yield (277.55 ± 1.37 pods/plant) compared to the narrow pentafoliate leaves obtained through the treatment with EMS. Meanwhile, in the SL744 variety, the same treatment led to tetrafoliate leaves with a comparatively lower yield of 206.54 ± 23.47 pods/plant as compared to the control (SL744 164.33 ± 8.58 and SL958 229.86 ± 0.96). The highest protein content (47.04 ± 0.87% TSP) was recorded in the SL958 (0.4% SA) M2 seeds followed by a content of 46.14 ± 0.64% TSP in the SL744 (0.4% SA) M2 seeds, whereas the lowest content (38.13 ± 0.81% TSP) was found in SL958 (0.6% MMS). Similar observations were recorded for the lipid and fibre content. The 0.4% SA treatment in SL958 proved to be efficient in generating the highest leaf area (tetrafoliate leaves) and a reasonable yield of M1 (the first generation after mutation) plants.
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  • 文章类型: Journal Article
    许多非洲国家无法满足其不断增长的人口的粮食需求,气候变化和疾病爆发使情况更加恶化。如果不采取有效措施提供更多粮食,这一粮食不安全问题可能会导致一场规模巨大的危机。因此,利用生物技术改善现有作物品种对生物和非生物胁迫的耐受性或抗性,对于增加作物产量至关重要。为了优化作物生产,一些非洲国家已经实施了充分利用这一创新技术的战略。例如,尼日利亚政府实施了国家生物技术政策,以促进能力建设,研究,二十多年来,生物资源开发和生物技术产品的商业化。几个政府部门,研究中心,大学,和机构共同努力实施这项政策,导致一些转基因作物向农民种植和商业化,这是一项重大成就。然而,转基因作物仅被带到尼日利亚进行密闭田间试验;转基因作物的制造发生在国外。这可能导致了对压力团体的怀疑,并鼓励生物技术作为外来技术的支持者。同样,这也可能是阻碍其他非洲国家采用生物技术产品的根本问题。因此,非洲大学有必要发展生物技术各个方面的能力,不断培训土著科学家,他们能够产生针对解决各自国家特有问题的创新想法。因此,本研究旨在以尼日利亚为例,确定基因工程和基因组编辑对实现非洲粮食安全的作用。在我们看来,生物技术方法不仅将补充传统的育种方法,以追求作物改良,但它仍然是解决阻碍最佳作物生产的具体问题的可行和可持续手段。此外,我们建议金融机构向新企业提供低息贷款。为了促进生物技术产品的增长,特别是通过分子农业创造就业机会和收入。
    Many African countries are unable to meet the food demands of their growing population and the situation is worsened by climate change and disease outbreaks. This issue of food insecurity may lead to a crisis of epic proportion if effective measures are not in place to make more food available. Thus, deploying biotechnology towards the improvement of existing crop varieties for tolerance or resistance to both biotic and abiotic stresses is crucial to increasing crop production. In order to optimize crop production, several African countries have implemented strategies to make the most of this innovative technology. For example, Nigerian government has implemented the National Biotechnology Policy to facilitate capacity building, research, bioresource development and commercialization of biotechnology products for over two decades. Several government ministries, research centers, universities, and agencies have worked together to implement the policy, resulting in the release of some genetically modified crops to farmers for cultivation and Commercialization, which is a significant accomplishment. However, the transgenic crops were only brought to Nigeria for confined field trials; the manufacturing of the transgenic crops took place outside the country. This may have contributed to the suspicion of pressure groups and embolden proponents of biotechnology as an alien technology. Likewise, this may also be the underlying issue preventing the adoption of biotechnology products in other African countries. It is therefore necessary that African universities develop capacity in various aspects of biotechnology, to continuously train indigenous scientists who can generate innovative ideas tailored towards solving problems that are peculiar to respective country. Therefore, this study intends to establish the role of genetic engineering and genome editing towards the achievement of food security in Africa while using Nigeria as a case study. In our opinion, biotechnology approaches will not only complement conventional breeding methods in the pursuit of crop improvements, but it remains a viable and sustainable means of tackling specific issues hindering optimal crop production. Furthermore, we suggest that financial institutions should offer low-interest loans to new businesses. In order to promote the growth of biotechnology products, especially through the creation of jobs and revenues through molecular farming.
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  • 文章类型: Journal Article
    基因组编辑是一种有前途的技术,已广泛用于基本基因功能研究和性状改善。同时,计算能力和大数据的指数增长促进了机器学习在生物学研究中的应用。在这方面,机器学习在基因组编辑系统的完善和作物改良方面显示出巨大的潜力。这里,我们回顾了机器学习在基因组编辑优化方面的进展,重点放在编辑效率和特异性增强上。此外,我们展示了机器学习如何连接基因组编辑和作物育种,通过准确的关键位点检测和指导RNA设计。最后,我们讨论了这两种技术在作物改良中的当前挑战和前景。通过将先进的基因组编辑技术与机器学习相结合,未来作物育种的进展将进一步加快。
    Genome editing is a promising technique that has been broadly utilized for basic gene function studies and trait improvements. Simultaneously, the exponential growth of computational power and big data now promote the application of machine learning for biological research. In this regard, machine learning shows great potential in the refinement of genome editing systems and crop improvement. Here, we review the advances of machine learning to genome editing optimization, with emphasis placed on editing efficiency and specificity enhancement. Additionally, we demonstrate how machine learning bridges genome editing and crop breeding, by accurate key site detection and guide RNA design. Finally, we discuss the current challenges and prospects of these two techniques in crop improvement. By integrating advanced genome editing techniques with machine learning, progress in crop breeding will be further accelerated in the future.
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  • 文章类型: Journal Article
    本研究使用16SrRNA基因测序提供了黄麻内生和根际细菌的序列数据集。首先对植物样品进行表面灭菌,并使用Quick-DNA™真菌/细菌Miniprep试剂盒从土壤和黄麻根和茎中提取细菌的DNA。扩增纯化的DNA并使用正向和反向引物进行聚合酶链式反应。PCR产物在应用生物系统ABI3500XL遗传分析仪(应用生物系统,ThermoFisherScientific)。使用BioEdit版本7.2.5然后在NCBI上BLAST分析序列。可识别的细菌包括根瘤菌,水果柠檬酸杆菌RZS23(登录号:CP024673.1),内生细菌,蜡状芽孢杆菌EDR23(登录号:LN890242.1),和MorganellamorganiiEDS23(登录号:KR094121.1)。这些细菌表现出的植物生长促进特性表明了它们作为生物接种剂的未来探索。
    This study provides sequence datasets of endophytic and rhizobacteria of jute using 16S rRNA gene sequencing. The plant samples were first surface sterilized and DNA of the bacteria from soil and jute roots and stem was extracted using Quick-DNA™ Fungal/Bacterial Miniprep Kit. The purified DNA was amplified and subjected to polymerase chain reaction using forward and reverse primers. The PCR products were sequenced on Applied Biosystems ABI 3500XL Genetic Analyser (Applied Biosystems, ThermoFisher Scientific). The sequences were analyzed using BioEdit version 7.2.5 and then BLAST on NCBI. The identifiable bacteria include the rhizobacteria, Citrobacter fruendii RZS23 (accession number: CP024673.1), endophytic bacteria, Bacillus cereus EDR23 (accession number: LN890242.1), and Morganella morganii EDS23 (accession number: KR094121.1). The plant growth-promoting traits exhibited by these bacteria suggest their future exploration as bioinoculants.
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  • 文章类型: Journal Article
    作物育种需要开发和选择具有改善的农艺性状的植物品种。现代分子技术,比如基因组编辑,通过改变特定调节或功能基因的表达,能够更有效地操纵植物表型。因此,彻底理解支持这些特征的转录调控机制是至关重要的。在多元组学时代,已经为不同的作物物种生成了大量的组学数据,包括基因组学,表观基因组学,转录组学,蛋白质组学,和单细胞组学。丰富的数据资源和先进的计算工具的出现提供了前所未有的机会,可以获得与理想特征相关的监管过程的整体观点和深刻理解。这篇综述的重点是利用多组数据来研究基因表达调控的集成网络方法。讨论了各种类型的监管网络及其推断方法,专注于作物植物的最新进展。多组数据的整合已被证明对于构建高置信度监管网络至关重要。随着这些方法的完善,它们将大大加强作物育种工作,并为全球粮食安全做出贡献。
    Crop breeding entails developing and selecting plant varieties with improved agronomic traits. Modern molecular techniques, such as genome editing, enable more efficient manipulation of plant phenotype by altering the expression of particular regulatory or functional genes. Hence, it is essential to thoroughly comprehend the transcriptional regulatory mechanisms that underpin these traits. In the multi-omics era, a large amount of omics data has been generated for diverse crop species, including genomics, epigenomics, transcriptomics, proteomics, and single-cell omics. The abundant data resources and the emergence of advanced computational tools offer unprecedented opportunities for obtaining a holistic view and profound understanding of the regulatory processes linked to desirable traits. This review focuses on integrated network approaches that utilize multi-omics data to investigate gene expression regulation. Various types of regulatory networks and their inference methods are discussed, focusing on recent advancements in crop plants. The integration of multi-omics data has been proven to be crucial for the construction of high-confidence regulatory networks. With the refinement of these methodologies, they will significantly enhance crop breeding efforts and contribute to global food security.
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  • 文章类型: Journal Article
    随着气候变化和全球人口不断增长,对粮食作物生产能力的需求不断增加,农业和作物研究的技术进步将仍然是必要的。尽管在过去的一个世纪中,作物改良的巨大进步促进了产量的大量增加,传统的育种计划缺乏满足未来需求所需的遗传增益率。在过去的十年里,已经开发了新的育种技术和工具来帮助作物改良。一个这样的进步是使用速度育种。速度育种被称为显着减少作物世代之间时间的方法的应用,从而简化育种和研究工作。这些快速一代的进步策略有助于加快作物改良努力的步伐,以维持粮食安全和满足粮食,饲料,以及世界上不断增长的人口对纤维的需求。速度育种可以通过各种技术来实现,包括环境优化,基因组选择,CRISPR-Cas9技术,和表观基因组学工具。这篇综述旨在讨论作物育种技术和技术的这些重大进展,这些技术和技术有可能大大提高植物育种者快速生产重要品种的能力。
    As climate changes and a growing global population continue to escalate the need for greater production capabilities of food crops, technological advances in agricultural and crop research will remain a necessity. While great advances in crop improvement over the past century have contributed to massive increases in yield, classic breeding schemes lack the rate of genetic gain needed to meet future demands. In the past decade, new breeding techniques and tools have been developed to aid in crop improvement. One such advancement is the use of speed breeding. Speed breeding is known as the application of methods that significantly reduce the time between crop generations, thereby streamlining breeding and research efforts. These rapid-generation advancement tactics help to accelerate the pace of crop improvement efforts to sustain food security and meet the food, feed, and fiber demands of the world\'s growing population. Speed breeding may be achieved through a variety of techniques, including environmental optimization, genomic selection, CRISPR-Cas9 technology, and epigenomic tools. This review aims to discuss these prominent advances in crop breeding technologies and techniques that have the potential to greatly improve plant breeders\' ability to rapidly produce vital cultivars.
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  • 文章类型: Editorial
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  • 文章类型: Journal Article
    目前的调查旨在强调水杨酸或氯化钙种子预处理对矿物质状态和氧化应激标志物的影响,即电解质渗漏(EL)水平和脂质过氧化水平,测量为硫代巴比妥反应性物质(TBARS),以及在各种盐处理下生长的两种大麦植物的根和叶中某些抗氧化酶的活性。总的来说,我们的结果表明,盐度会抑制铁等必需营养素的吸收,钙,镁和钾,刺激钠的吸收。此外,与对照条件相比,这种环境约束在植物中引起了氧化应激。这种氧化应激状态反映在TBARS含量的增加以及EL值的刺激上。此外,盐度诱导抗氧化酶活性的干扰,这主要取决于施加的盐浓度和物种。此外,大麦保持高抗氧化酶活性和低水平的氧化应激参数,这加强了它的耐盐性。重要的是,水杨酸或氯化钙种子引发减轻了矿物质失衡和盐度引起的氧化损伤。此外,种子引发改善铁,钙镁和钾的含量和限制钠的积累。此外,两种治疗不仅降低TBARS水平和限制EL,但与从非引发种子生长的胁迫植物相比,它们也刺激胁迫植物的叶片和根部的抗氧化酶活性。有趣的是,上述处理对大麦品种的有益作用更为显着。
    The current investigation aims to underline the impact of salicylic acid or calcium chloride seed pre-treatments on mineral status and oxidative stress markers, namely levels of electrolyte leakage (EL) and lipid peroxidation levels, measured as thiobarbituric reactive substances (TBARS), and the activity of some antioxidant enzymes in roots and leaves of plants in two barley species grown under various salt treatments. Overall, our results revealed that salinity inhibits essential nutrient absorption such as iron, calcium, magnesium and potassium and stimulates the absorption of sodium. Also, this environmental constraint induced oxidative stress in plants in comparison with the control conditions. This state of oxidative stress is reflected by an increase in TBARS content as well as the stimulation of EL values. In addition, salinity induced disturbances in the activity of antioxidant enzymes, which were mainly dependent on the applied salt concentration and the species. In addition, Hordeum marinum maintained high antioxidant enzyme activity and low levels of oxidative stress parameters, which reinforces its salt-tolerant character. Importantly, salicylic acid or calcium chloride seed priming alleviated the mineral imbalance and the oxidative damage induced by salinity. Moreover, seed priming improves iron, calcium magnesium and potassium content and limitsthe accumulation of sodium. Also, both treatments not only decrease TBARS levels and limit EL, but they also stimulate the antioxidant enzyme activities in the leaves and roots of the stressed plants as compared with stressed plants grown from non-primed seeds. Interestingly, the beneficial effects of the mentioned treatments were more notable on Hordeum vulgare species.
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