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Investigating the biological activity and biofilm inhibition of purified Pichia kudriavzevii killer toxin (PkKt) against pathogenic bacterial as a promising substance for food preservation 研究纯化的 Pichia kudriavzevii 杀手毒素(PkKt)对病原菌的生物活性和生物膜抑制作用,作为一种有前途的食品保鲜物质
IF 0.7 Q4 PLANT SCIENCES Pub Date : 2024-08-10 DOI: 10.14719/pst.3970
Naji Hasan Noor, Ali Shafiq Shatha, AkramThabit Zaid
Killer toxins (PkKT) produced by yeasts exhibit antimicrobial effects against pathogenic bacteria and fungi. This study aimed to extract, purify, and characterize the killer toxin from Pichia kudriavzevii killer toxin (PkKT) and evaluate its antimicrobial and anti-biofilm potential. PkKT was produced as a killer toxins and was purified through ammonium sulfate precipitation, ion exchange chromatography, and gel filtration. The purified PkKT showed a molecular weight of 36 kDa. Antimicrobial testing revealed significant inhibition against Staphylococcus aureus, Streptococcus pyogenes, Pseudomonas aeruginosa, Klebsiella pneumoniae, Listeria monocytogenes, Acinetobacter baumannii, Escherichia coli, and Candida albicans using well diffusion assays. The minimum inhibitory concentration (MIC) ranged from 16-128 ?g/mL, while the sub-MIC was determined to be 8-64 ?g/mL depending on the pathogen. At sub-MIC levels, PkKT exhibited a 66-89% reduction of biofilm formation in all tested species. S. aureus, S. pyogenes, and A. baumannii showed the highest MIC of 128 and 64 ?g/mL sub-MIC, while E. coli and K. pneumoniae were most susceptible with MIC of 16 ?g/mL and sub-MIC of 8 ?g/mL. In conclusion, the purified PkKT toxin displayed broad-spectrum antimicrobial and anti-biofilm activities against common healthcare-associated pathogens. These findings reveal the potential of PkKT as a therapeutic agent to prevent or treat biofilm-associated infections. 
酵母菌产生的杀手毒素(PkKT)对致病细菌和真菌有抗菌作用。本研究旨在提取、纯化和鉴定 Pichia kudriavzevii 杀手毒素(PkKT),并评估其抗菌和抗生物膜的潜力。PkKT 是一种杀手毒素,通过硫酸铵沉淀、离子交换色谱和凝胶过滤进行纯化。纯化后的 PkKT 分子量为 36 kDa。抗菌测试表明,利用井扩散试验,PkKT 对金黄色葡萄球菌、化脓性链球菌、铜绿假单胞菌、肺炎克雷伯菌、单核细胞增生李斯特菌、鲍曼不动杆菌、大肠埃希菌和白色念珠菌有明显抑制作用。根据病原体的不同,最低抑菌浓度 (MIC) 为 16-128 微克/毫升,亚 MIC 为 8-64 微克/毫升。在亚 MIC 浓度下,PkKT 可使所有受测物种的生物膜形成减少 66-89%。金黄色葡萄球菌、化脓性葡萄球菌和鲍曼不动杆菌的 MIC 值最高,分别为 128 和 64 微克/毫升,而大肠杆菌和肺炎双球菌的 MIC 值最高,分别为 16 微克/毫升和 8 微克/毫升。总之,纯化的 PkKT 毒素对常见的医疗相关病原体具有广谱抗菌和抗生物膜活性。这些发现揭示了 PkKT 作为一种治疗剂预防或治疗生物膜相关感染的潜力。
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引用次数: 0
Eco-designing of nano-materials to enhance crop productivity and improve soil remediation 生态设计纳米材料,提高作物产量并改善土壤修复
IF 0.7 Q4 PLANT SCIENCES Pub Date : 2024-08-09 DOI: 10.14719/pst.3536
Pranav Anil Patil, Rajeev Kumar Gupta, S. Sreethu, Shaifali
The advent of climate change has presented unprecedented challenges to global agricultural systems. Advanced nano-engineering is a valuable tool for promoting sustainability and enhancing crop productivity to ensure food security. Nanotechnology, in particular, is a technology that can be beneficial for crop production. It can minimize losses in resources, improve the targeted and controlled delivery of fertilizers or agrochemicals based on specific needs, prolong the effectiveness of agrochemicals, and reduce recommended dosages and associated losses to boost agricultural productivity. Additionally, nanotechnology's unique characteristics of high reactivity, selectivity, and versatility make it highly promising for addressing complex issues and developing innovative approaches for soil remediation. Nano-particles enhance growth, expedite crop maturation, and enhance a plant's resilience to stress, becoming valuable instruments in regions susceptible to drought and flooding. In addition, they possess the ability to eliminate toxic contaminants, specifically heavy metals and pesticide residues. Nano-particles have a reduced long-term impact on the environment, humans, and plants compared to normal agrochemicals. This review will be highly valuable for future researchers as they strive to understand and harness the potential of nano-materials for enhancing food security and promoting sustainable agriculture. 
气候变化的到来给全球农业系统带来了前所未有的挑战。先进的纳米工程是促进可持续性和提高作物生产力以确保粮食安全的宝贵工具。尤其是纳米技术,它是一项有益于作物生产的技术。它可以最大限度地减少资源损失,根据特定需求改进肥料或农用化学品的定向和控制输送,延长农用化学品的效力,减少推荐剂量和相关损失,从而提高农业生产率。此外,纳米技术还具有高反应性、高选择性和多功能性等独特特点,使其在解决复杂问题和开发创新土壤修复方法方面大有可为。纳米颗粒能促进作物生长,加快作物成熟,增强植物的抗逆性,在易受干旱和洪水影响的地区成为宝贵的工具。此外,它们还具有消除有毒污染物(特别是重金属和农药残留)的能力。与普通农用化学品相比,纳米微粒可减少对环境、人类和植物的长期影响。这篇综述对于未来的研究人员努力了解和利用纳米材料的潜力以加强粮食安全和促进可持续农业具有很高的价值。
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引用次数: 0
The impact of heavy metals on the physiological responses in Chaemocostus cuspidatus 重金属对Chaemocostus cuspidatus生理反应的影响
IF 0.7 Q4 PLANT SCIENCES Pub Date : 2024-08-09 DOI: 10.14719/pst.3715
Dixit Versha, B.T Manjunath
Chamaecostus cuspidatus (insulin plant) is a medicinally important plant used in several medicines and as dietary supplements. Leaves of this plant have been used to treat diabetes since ancient times. Photosynthesis is a crucial aspect of plant physiology, ultimately affecting plant growth and metabolite production. In the current study, the plant was grown in controlled polyhouse conditions and treated with three heavy metals (Pb, Cr, and Cu). Five different concentrations (Pb and Cr- 50, 100, 150, 200, 250 ppm and for Cu- 25, 50, 75, 100, 125 ppm) of each metal were used for the treatment. Non-destructive methods were used for the study of physiological aspects of plants. CI-340 Handheld Photosynthesis System and CI-710s SpectraVue Leaf Spectrometer were used to measure approx 10 different parameters. Photosynthetic active radiation (PAR) was highest in Cu 100 (52.733 ± 0.466) treated plants. The highest Net photosynthetic rate (Pn) values were observed in Cr 200 (38.65 ± 0.384). The transpiration rate (E) was found to be highest in Cu 125 (0.846 ± 0.0202). Total chlorophyll content (CPHLT) and Chlorophyll Content Index (CCI) were also measured, and it was found to be highest in Cu 75 (30.344 ± 0.262) and Pb 150 (11.979 ± 0.231), respectively. Water Band Index (WBI), Normalized Difference Vegetation Index (NDVI), Anthocyanin Reflectance Index 2 (ARI 2), and Carotenoid Reflectance Index 2 (CRI 2) were also measured and analyzed for all the treatment groups along with control for each set. Statistical analysis represents significant differences among all the treated and control plants. These indices represent plant physiology, growth, and vegetative health of plants. Further biochemical and metabolite level studies can be done to further understand the effect of heavy metals on plant growth and metabolite production.
Chamaecostus cuspidatus(胰岛素植物)是一种重要的药用植物,可用于多种药物和膳食补充剂。自古以来,这种植物的叶子就被用来治疗糖尿病。光合作用是植物生理的一个重要方面,最终会影响植物的生长和代谢产物的产生。在当前的研究中,该植物在受控温室条件下生长,并用三种重金属(铅、铬和铜)进行处理。处理时使用了五种不同浓度的重金属(铅和铬- 50、100、150、200、250 ppm,铜- 25、50、75、100、125 ppm)。对植物生理方面的研究采用了非破坏性方法。CI-340 手持式光合作用系统和 CI-710s SpectraVue 叶光谱仪用于测量约 10 个不同的参数。经 Cu 100 处理的植物光合有效辐射(PAR)最高(52.733 ± 0.466)。Cr 200(38.65 ± 0.384)的净光合速率(Pn)值最高。蒸腾速率(E)在 Cu 125(0.846 ± 0.0202)中最高。还测量了叶绿素总含量(CPHLT)和叶绿素含量指数(CCI),发现 Cu 75(30.344 ± 0.262)和 Pb 150(11.979 ± 0.231)的叶绿素总含量最高。还测量和分析了所有处理组和对照组的水带指数(WBI)、归一化植被指数(NDVI)、花青素反射率指数 2(ARI 2)和类胡萝卜素反射率指数 2(CRI 2)。统计分析结果表明,所有处理组和对照组植物之间存在明显差异。这些指数代表了植物的生理、生长和植株健康状况。为进一步了解重金属对植物生长和代谢物产生的影响,还可以开展进一步的生化和代谢物水平研究。
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引用次数: 0
Altered physiological response in drought stressed rice plants upon root colonization with the beneficial endophytic fungus Piriformospora indica under field conditions 在田间条件下,根部定殖有益内生真菌 Piriformospora indica 后,干旱胁迫水稻植株的生理反应发生改变
IF 0.7 Q4 PLANT SCIENCES Pub Date : 2024-08-09 DOI: 10.14719/pst.4140
Koya Madhuri Mani, M. Ameena, K. Anith, P. G. Pratheesh, S. Adarsh, Shanavas Shifina
We studied the physiological and biochemical responses of rice plants colonized by the root endophytic fungus Piriformospora indica under varying moisture stress levels that consisted of ideal (non-stress), mild, moderate, severe, very severe, and extremely severe stress imposed by altering depth of irrigation and frequency in a summer field crop. Colonization by P. indica exhibited distinctive drought defensive effects characterized by the enhanced production of proline, which contributed to improved plant resilience to drought stress, alleviating the harmful oxidative stress. In colonized plants that were under extremely severe stress, proline levels in leaf tissues rose by 18% during panicle initiation (PI) and by 21% during the flowering stage, compared to the uninoculated plants. P. indica colonization also enhanced the relative leaf water content and cell membrane stability in plants. Under extremely severe stress, colonized plants displayed improved cell membrane stability (57% and 48%) at PI and flowering, representing 29% and 8% improvement, respectively, over the non-colonized plants under stress. Endophyte colonized plants demonstrated increased resistance to drought stress with enhanced chlorophyll stability when compared to stressed plants that were not colonized. Fungal colonization also enhanced the growth and resilience of rice plants under drought, resulting in a remarkable 37% increase in grain yield compared to non-colonized plants.
我们研究了通过改变灌溉深度和频率对夏季大田作物施加的不同水分胁迫水平(包括理想(非胁迫)、轻度、中度、重度、极重度和极重度胁迫)下被根内生真菌 Piriformospora indica 定殖的水稻植株的生理和生化反应。P. indica 的定殖表现出独特的干旱防御效应,其特点是脯氨酸的产生增加,这有助于提高植物对干旱胁迫的恢复能力,减轻有害的氧化胁迫。与未接种的植株相比,在遭受极端严重胁迫的植株中,叶片组织中的脯氨酸含量在圆锥花序初生期(PI)上升了 18%,在开花期上升了 21%。P. indica 的定殖还提高了植物叶片的相对含水量和细胞膜的稳定性。在极度严重的胁迫下,定殖植株在萌芽期和开花期的细胞膜稳定性分别提高了 57% 和 48%,与未定殖植株相比,分别提高了 29% 和 8%。与未定植的受胁迫植物相比,定植了内生真菌的植物对干旱胁迫的抗性增强,叶绿素稳定性提高。真菌定殖还增强了水稻植株在干旱条件下的生长和恢复能力,与未定殖植株相比,谷物产量显著提高了 37%。
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引用次数: 0
Ethnobotanical Research in Bangladesh – A Review 孟加拉国民族植物学研究综述
IF 0.7 Q4 PLANT SCIENCES Pub Date : 2024-08-08 DOI: 10.14719/pst.3372
M. K. Alam, A. K. M. G. Sarwar
The ethnobotanical studies focus on how people of a specific culture, group, tribe, or geographic area make use of native (indigenous) plants. This paper reports the status of ethnobotanical knowledge from a historical perspective in recent years in the relatively small and diversity-rich territory of Bangladesh. Ethnobotanical research is now getting more focused on new areas such as ecosystem services, pharmaceutical prospecting, the growth of traditional medicine, value-added plant products, domestication of new crops, and raising awareness of the importance of biological diversity for resource management, environmental education, and conservation. We have also discussed some further thrust areas, constraints, and prospects of ethnobotanical research and mainstreaming ethnobotanical knowledge in national planning processes.
民族植物学研究侧重于特定文化、群体、部落或地理区域的人们如何利用本地(本土)植物。本文从历史的角度报告了近年来在面积相对较小、多样性丰富的孟加拉国,民族植物学知识的现状。目前,人种植物学研究越来越关注新的领域,如生态系统服务、医药勘探、传统医药的发展、植物产品的增值、新作物的驯化,以及提高人们对生物多样性在资源管理、环境教育和保护方面重要性的认识。我们还讨论了民族植物学研究的进一步重点领域、制约因素和前景,以及将民族植物学知识纳入国家规划进程主流的问题。
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引用次数: 0
Changes in amino acid levels and their effects on parthenocarpic fruit formation in young Barhi date palms Phoenix dactylifera L. derived from tissue culture 组织培养的巴希椰枣幼树 Phoenix dactylifera L. 中氨基酸水平的变化及其对孤雌生殖果实形成的影响
IF 0.7 Q4 PLANT SCIENCES Pub Date : 2024-08-08 DOI: 10.14719/pst.3982
A. G. Salah, A. S. Aqeel, M. A. Khairullah
This research aims to analyse the quantities of non-essential amino acids (histidine, arginine, alanine, cysteine and tyrosine) and essential amino acids (aspartic, glutamine, serine, glycine, phenylalanine, threonine, valine, isoleucine, leucine, methionine and lysine) in the leaves of three different date palm phenotypes. These phenotypes are derived through tissue culture from and parthenocarpic fruits (shees) produces, normal fruits (normal) produce and propagated by offshoots of normal fruits (vegetal) produces. This study focuses on three distinct stages: pre-flowering, flowering and fruiting. The amino acid levels were determined using HPLC. Results of this study indicate that the shees phenotype has the lowest levels of amino acids compared with the normal and vegetal phenotypes. Most amino acids exhibit a consistent trend throughout the examined stages, with levels declining from the pre-flowering stage to the flowering stage, but show an increase in the fruiting stage compared with the preceding stage. In addition, the results reveal that methionine is absent in the shees phenotype during all stages of the study but present at high levels in the vegetal and normal phenotypes. These results indicate that the metabolism of amino acids varies among different phenotypes of date palms. This variation directly or indirectly affects the development of parthenocarpic fruits in date palms of the Barhi cultivar derived from tissue culture during the juvenile period.
本研究旨在分析三种不同枣椰树表型叶片中的非必需氨基酸(组氨酸、精氨酸、丙氨酸、半胱氨酸和酪氨酸)和必需氨基酸(天冬氨酸、谷氨酰胺、丝氨酸、甘氨酸、苯丙氨酸、苏氨酸、缬氨酸、异亮氨酸、亮氨酸、蛋氨酸和赖氨酸)的含量。这些表型是通过组织培养从孤雌生殖果实(雌果)、正常果实(正常果)和正常果实(无性果)的分支繁殖而来的。本研究的重点是三个不同的阶段:开花前、开花期和结果期。采用高效液相色谱法测定了氨基酸水平。研究结果表明,与正常果实和无性果实表型相比,雌核果实表型的氨基酸含量最低。大多数氨基酸在整个检测阶段呈现出一致的趋势,从开花前阶段到开花阶段,氨基酸含量都在下降,但在结果阶段,氨基酸含量比前一阶段有所增加。此外,研究结果表明,在研究的各个阶段,蛋氨酸在母羊表型中都不存在,但在植株表型和正常表型中含量较高。这些结果表明,不同表型枣树的氨基酸代谢存在差异。这种差异直接或间接地影响了组织培养的 Barhi 栽培品种枣椰树在幼树期孤雌生殖果实的发育。
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引用次数: 0
Impact of exogenous ascorbic acid and putrescine on vegetative, root system morphology and chemical composition of clementine Mandarin saplings 外源抗坏血酸和腐植酸对柑橘树苗植被、根系形态和化学成分的影响
IF 0.7 Q4 PLANT SCIENCES Pub Date : 2024-08-08 DOI: 10.14719/pst.4075
Taghreed Ali Hilal, Thamer H. R. Al - Falahy
Spraying with antioxidants and polyamines is one of the techniques that contribute to improving vegetative growth and the architectural structure of the roots, in addition to improving the chemical content of the plant. The objective of the study was to enhance the traits related to vegetative growth, root development, and chemical composition of one-year-old Clementine mandarin saplings. This was achieved by applying ascorbic acid through foliar application at different concentrations (0,300, 600, 900 mg/L) and utilizing three concentrations of putrescine (0,75,150 mg/L). The results showed that most of the growth indicators in terms of main shoot number, main shoot length, vegetative dry weight, taproot length, secondary lateral roots number, secondary lateral roots length, roots system dry weight, chlorophyll, and vitamin C content in leaf, and shoots carbohydrate content were significantly increased with increasing concentration. The ascorbic acid is more effective at 900 mg/L than other concentrations, whereas putrescine was more effective at 150 mg/L, contrasted with 75 mg/L and control.
喷洒抗氧化剂和多胺是有助于改善无性生长和根系结构的技术之一,此外还能改善植物的化学成分。这项研究的目的是提高一岁柑橘树苗的无性生长、根系发育和化学成分的相关性状。通过叶面喷施不同浓度的抗坏血酸(0、300、600、900 毫克/升)和使用三种浓度的腐植酸(0、75、150 毫克/升)来实现这一目标。结果表明,随着浓度的增加,主芽数、主芽长、无性系干重、直根长、次侧根数、次侧根长、根系干重、叶绿素、叶片中维生素 C 含量和芽中碳水化合物含量等大部分生长指标都显著增加。抗坏血酸在 900 毫克/升时比其他浓度更有效,而腐植酸在 150 毫克/升时比 75 毫克/升和对照更有效。
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引用次数: 0
Seasonal variation in chemical compositions and biological activities of essential oils extracted from Ageratum conyzoides L. - grown in Western Ghats Region-South India 从生长在印度南部西高止山脉地区的 Ageratum conyzoides L. 提取的精油的化学成分和生物活性的季节性变化
IF 0.7 Q4 PLANT SCIENCES Pub Date : 2024-08-08 DOI: 10.14719/pst.4332
Priya M Karthigai, K. Poonkodi, C. Ragupathi, R. Rathinam, E. Jayanthi
The study aimed to characterize the influence of seasonal variation on the chemical composition and biological activities of essential oils extracted from the leaves of Ageratum conyzoides L. (A. conyzoides). Essential oils were extracted in summer (May), winter (January), and autumn (September) by hydrodistillation. GC/MS identified the volatiles compounds. The major compounds present in the essential oils across the three different seasons were Precocene II (29.44, 39.8 and 43.90%), Precocene I (32.17, 22.8 and 20.14%), and Caryophyllene oxide (9.09, 11.50 and 10.2%), followed by Carvone Hydrate (4.39, 4.65 and 3.65%) and Germacrene D (2.42, 2.25 and 2.76%). Biological activities such as in-vitro antioxidant, anti-cancer, and anti-bacterial activities were evaluated. The essential oil from A. conyzoides leaves exhibited strong antioxidant activity with IC50 values of 34.17 µg/mL for DPPH and 33.47 µg/mL for ABTS assays in summer; 99.92 µg/mL for DPPH and 26.40 µg/ mL for ABTS in winter; and 96.47 µg/mL for DPPH and 78.59 µg/mL for ABTS in autumn. The essential oil showed significant anticancer activity against the MDA-MB-231 breast cancer cell line with IC50 value of 122±0.05 µg/mL in summer, 86.50±0.05 µg/mL in winter, and 148.38 ± 1.15 µg/mL in autumn, compared to and Etoposide at 30 µg/mL. The antibacterial activity against two gram-positive and four Gram-negative bacteria is moderate to good.   
本研究旨在描述季节变化对从Ageratum conyzoides L.(A. conyzoides)叶片中提取的精油的化学成分和生物活性的影响。精油分别在夏季(5 月)、冬季(1 月)和秋季(9 月)通过水蒸馏法提取。GC/MS 鉴定了挥发性化合物。三个不同季节精油中的主要化合物是前胡烯 II(29.44%、39.8% 和 43.90%)、前胡烯 I(32.17%、22.8% 和 20.14%)和氧化卡里叶烯(9.09%、11.50% 和 10.2%),其次是水合卡文酮(4.39%、4.65% 和 3.65%)和芽烯 D(2.42%、2.25% 和 2.76%)。对体外抗氧化、抗癌和抗菌等生物活性进行了评估。锥栗叶精油具有很强的抗氧化活性,在夏季,DPPH 和 ABTS 试验的 IC50 值分别为 34.17 µg/mL 和 33.47 µg/mL;在冬季,DPPH 和 ABTS 试验的 IC50 值分别为 99.92 µg/mL 和 26.40 µg/mL;在秋季,DPPH 和 ABTS 试验的 IC50 值分别为 96.47 µg/mL 和 78.59 µg/mL。精油对 MDA-MB-231 乳腺癌细胞株具有明显的抗癌活性,与 30 µg/mL 的依托泊苷相比,夏季的 IC50 值为 122±0.05 µg/mL,冬季为 86.50±0.05 µg/mL,秋季为 148.38 ± 1.15 µg/mL。对两种革兰氏阳性菌和四种革兰氏阴性菌的抗菌活性为中等至良好。
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引用次数: 0
Genetic variability, correlation and path analysis in the BC2F2 population of groundnut 花生 BC2F2 群体的遗传变异、相关性和路径分析
IF 0.9 Q3 Environmental Science Pub Date : 2024-05-12 DOI: 10.14719/pst.3282
Rachel Lissy Vargheese, S. Saravanan, S. J. Hepziba, S. Prem Kumari, A. K. Pushpam, M. A. Pillai
The present study was carried out in the backcross population of groundnut involving TMV 7 and ICG 15419. Allele-specific primers were used to screen the population for high oleic acid and a total of 11 yield-contributing traits were included in this study. The number of primary and secondary branches had higher estimates of PCV and GCV whereas pod yield per plant had moderate PCV but low GCV. Along with the variability parameters, plant height, number of primary and secondary branches, pod width, 100 pod weight, oleic acid content and linoleic acid content had good estimates of heritability and genetic advance as a percent of the mean, whereas pod yield per plant had moderate and low, heritability and GAM respectively, with a negatively significant skewed distribution. Association analysis exhibited a positive correlation between the number of primary branches, number of secondary branches, pod length and 100 pod weight with pod yield per plant and it was evident that oleic acid was indirectly proportional to linoleic acid content. Hundred pod weights had the highest direct effect on pod yield per plant. Selection based on traits with a better relationship with pod yield per plant and moderate to high estimates of PCV, GCV, heritability and genetic advancement would help in accelerating the groundnut improvement program. High oleic, low linolenic lines of BC2F2 with better pod yield would be forwarded to the next generation.
本研究是在涉及 TMV 7 和 ICG 15419 的花生回交群体中进行的。本研究使用等位基因特异性引物筛选高油酸群体,共包括 11 个产量贡献性状。一级和二级分枝数的 PCV 和 GCV 值较高,而每株豆荚产量的 PCV 值适中,GCV 值较低。除变异性参数外,株高、一级分枝和二级分枝数、荚宽、百荚重、油酸含量和亚油酸含量的遗传率和遗传进率(占平均值的百分比)估计值较高,而单株豆荚产量的遗传率和遗传进率(GAM)分别为中等和较低,且呈负显著偏斜分布。关联分析表明,一级分枝数、二级分枝数、豆荚长度和百荚重与单株豆荚产量呈正相关,油酸显然与亚油酸含量间接成正比。豆荚百粒重对单株豆荚产量的直接影响最大。根据与单株豆荚产量关系较好的性状以及中高估计 PCV、GCV、遗传率和遗传进展进行选择,将有助于加快花生改良计划。BC2F2 的高油酸、低亚麻酸品系具有更好的豆荚产量,将被推广到下一代。
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引用次数: 0
Study the hepatoprotective effect of the methanolic extract of Plumbago auriculata Lam. against CCl4-induced hepatocyte damage in mice 研究桔梗甲醇提取物对 CCl4 诱导的小鼠肝细胞损伤的保肝作用
IF 0.9 Q3 Environmental Science Pub Date : 2024-05-12 DOI: 10.14719/pst.3572
Massara Nazar Ahmed, A. Khamees
The liver is an important organ in the body; its diseases are considered the major causes of morbidity and mortality around the world. Hepatotoxic chemicals cause damage to liver cells. Medicinal plants have a powerful hepatoprotective effect. This study has been aimed to assess the potential hepatoprotective effect of the methanolic extract of Plumbago auriculata Lam. against carbon tetrachloride (CCl4)- induced hepatocyte damage in albino mice. The methanolic extract of the plant was subjected to preliminary phytochemical analysis to determine the presence of secondary metabolites according to standard protocols. The acute toxicity study was carried out to measure the LD50. Swiss albino mice were divided into 4 groups treated intraperitoneally (IP) once daily for 7 days; the first group was a negative control, while the second group, considered as a CCl4 model, received a single dose of carbon tetrachloride during the last day. The third group received 500 mg/kg of body weight of methanolic extract of P. auriculata, and the last group received 100 mg/kg of body weight of standard silymarin, after 2 h of treatment, on the last day, all animals (except negative control group) have received CCl4 at a dose of 1 mL/kg of body weight. Biochemical analysis of collected blood and histopathological examination were performed. Results revealed that the preliminary phytochemical screening of the methanolic extract of the plant confirmed the presence of many biologically active secondary metabolites like flavonoids, steroids, terpenoids, saponins, glycosides and phenols and LD50 of the extract was 2.5 g/kg. The CCl4- intoxicated mice showed an increase in biochemical enzyme levels (ALT and AST) compared with the negative control group. The extract of 500 mg/kg revealed a significant reduction (p ? 0.05) in enzyme activities. The histopathological analysis of plant extract and silymarin-treated groups revealed a decrease in the pathological features compared with the CCl4-intoxicated group. It was concluded that the extract of P. auriculata has a significant effect on hepatoprotection against CCl4-induced hepatocyte damage and this may be because of the combined effects of the bioactive compositions of plant extract.
肝脏是人体的重要器官,其疾病被认为是全球发病率和死亡率的主要原因。肝毒性化学物质会对肝细胞造成损害。药用植物具有强大的保肝作用。本研究旨在评估桔梗甲醇提取物对四氯化碳(CCl4)诱导的白化小鼠肝细胞损伤的潜在保肝作用。根据标准方案,对该植物的甲醇提取物进行了初步植物化学分析,以确定是否存在次级代谢产物。进行了急性毒性研究,以测定半数致死剂量。将瑞士白化小鼠分为 4 组,每天一次腹腔注射(IP),连续 7 天;第一组为阴性对照组,第二组被视为四氯化碳模型,在最后一天接受单剂量四氯化碳。第三组接受每公斤体重 500 毫克的枳实甲醇提取物,最后一组接受每公斤体重 100 毫克的标准水飞蓟素,治疗 2 小时后,所有动物(阴性对照组除外)在最后一天接受每公斤体重 1 毫升剂量的四氯化碳治疗。对采集的血液进行生化分析,并进行组织病理学检查。结果显示,对该植物甲醇提取物进行的初步植物化学筛选证实,其中含有许多具有生物活性的次生代谢物,如黄酮类、甾体类、萜类、皂苷类、苷类和酚类,提取物的半数致死剂量为 2.5 克/千克。与阴性对照组相比,氯化萘中毒小鼠的生化酶水平(谷丙转氨酶和谷草转氨酶)有所上升。500 毫克/千克的提取物可显著降低酶活性(p ? 0.05)。对植物提取物和水飞蓟素处理组的组织病理学分析表明,与 CCl4 中毒组相比,病理特征有所减少。结论是枳实提取物对 CCl4 诱导的肝细胞损伤有显著的保护作用,这可能是由于植物提取物中生物活性成分的综合作用。
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