TAP CHI SINH HOC最新文献_第3页

Diversity of plant-parasitic nematodes on medicinal plants in melinh station for biodiversity, Vinh Phuc Province, Vietnam 越南永福省melinh生物多样性监测站药用植物上植物寄生线虫的多样性

TAP CHI SINH HOC Pub Date : 2019-07-23 DOI: 10.15625/0866-7160/V41N3.13849

Nguyen Huu Tien, N. T. Duyen, L. Huy, Nobleza Neriza, T. Phap

{"title":"Diversity of plant-parasitic nematodes on medicinal plants in melinh station for biodiversity, Vinh Phuc Province, Vietnam","authors":"Nguyen Huu Tien, N. T. Duyen, L. Huy, Nobleza Neriza, T. Phap","doi":"10.15625/0866-7160/V41N3.13849","DOIUrl":"https://doi.org/10.15625/0866-7160/V41N3.13849","url":null,"abstract":"Plant-parasitic nematodes are known as one of the most important pests attacking various plants in the world, and investigating the nematode component is very essential for management of this pest and prevent damage to plants in general. Our survey of plant-parasitic nematodes on medicinal plants in Melinh Station for Biodiversity, a place for conservation of precious plants and animals in Vietnam, identified ten species that belong to nine genera, five families, and two orders of plant-parasitic nematodes parasitizing six medicinal plants. Excoecaria cochinchinensis was parasitized by the highest number of nematode genera (5 genera, including Xiphinema, Discocriconemella, Meloidogyne, Helicotylenchus, and Hemicriconemoides), while Hymenocallis littoralis was associated with the highest number of plant-parasitic nematodes (2060 nematodes/250g soil). The results also showed that Discocriconemella limitanea was found to be a dominant species with the highest number of individuals on 6 medicinal plants, and the genus Helicotylenchus had the highest frequency of appearance (5/6 plants or 83.3%). These nematodes caused symptoms such as yellowing leaves, root galls, and root lesions, which directly affect the quality and yield of medicinal plants. Based on the results, this study showed that plant-parasitic nematodes are a potential threat to the cultivation of medicinal plants in Melinh Station for Biodiversity, and thus, control measures should be applied to ensure sustainable cultivation of medicinal plants in this place.","PeriodicalId":409863,"journal":{"name":"TAP CHI SINH HOC","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-07-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126465969","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: 3

Study of antihyperglycaemic activity in streptozotocin induced diabetic mice and antioxidant activities of medicinal plant extracts 链脲佐菌素诱导糖尿病小鼠降高血糖活性及药用植物提取物抗氧化活性的研究

TAP CHI SINH HOC Pub Date : 2019-06-28 DOI: 10.15625/0866-7160/V41N2.13783

N. X. Thu, Da Long, Thanh Thi Thu Thuy

{"title":"Study of antihyperglycaemic activity in streptozotocin induced diabetic mice and antioxidant activities of medicinal plant extracts","authors":"N. X. Thu, Da Long, Thanh Thi Thu Thuy","doi":"10.15625/0866-7160/V41N2.13783","DOIUrl":"https://doi.org/10.15625/0866-7160/V41N2.13783","url":null,"abstract":"Some extracts of medicinal plants have demonstrated potential benefits in treatment of different diseases for centuries such as antihyperglycemic, antioxidant, anti-inflammatory, antibacterial. The purpose of this study is to evaluate the effect of extracts from several herbal plants, such as Gymnema sylvestre, Stevia rebaudiana, Cinnamomum cassia, Zea may, Ocimum basilicumon blood glucose level in streptozotocin (STZ) induced diabetic miceand to offer scientific proofs for the identified antihyperglycemic effect by investigating on mechanismsof the most effective extract. The results proved that diabetic mice treated with 70% ethanol extracts of Gymnema sylvestre leaves and Stevia rebaudiana leaves showed significant reduction of the blood glucose levels at a dose of 500 mg/kg body weight when compared to control (p<0,05). Antihyperglycemic activity of Gymnema sylvestre (57,68%) and Stevia rebaudiana extracts (54,93%) were significantly higher than other extracts. The inhibition of α-amylase and α-glucosidase activity of Gymnema sylvestreand, Stevia rebaudiana extracts were carried out in vitro. The result demonstrated that these Gymnema sylvestre and Stevia rebaudiana extracts exerted significant inhibition and specific on intestinal α-amylase and α-glucosidases activities. Using 1,1-diphenyl-2-picrylhydrazyl (DPPH) assay showed that Gymnema sylvestre and Stevia rebaudiana extracts exhibited relatively low antioxidant activity with the concentration of a sample required for 50% scavenging of the DPPH free radical of 115,88 ± 1,16 µg/ml and 160,27 ± 2,01 µg/mlcompared to vitamin C (49,16 ± 1,26 µg/ml). ","PeriodicalId":409863,"journal":{"name":"TAP CHI SINH HOC","volume":"6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-06-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121909393","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: 2

On the classification of the genera Labyrinthula, Schizochytrium and Thraustochytrium (Labyrinthulids and Thraustochytrids) 论迷路属、裂喉属和喉喉属(迷路目和喉喉目)的分类

TAP CHI SINH HOC Pub Date : 2019-06-25 DOI: 10.15625/0866-7160/V41N2.13896

Ø. Moestrup

引用次数: 0

The effect of some factors on expression of gene encoding endoglucanase from dna metagenome of Binh Chau hot spring in Escherichia coli 平洲温泉大肠杆菌dna宏基因组中编码内切葡聚糖酶基因表达的影响

TAP CHI SINH HOC Pub Date : 2019-06-25 DOI: 10.15625/0866-7160/v41n2.13726

T. T. Thuy, L. Nhung, T. Man, L. Xuan, Nguyen Thi Kim Thoa

{"title":"The effect of some factors on expression of gene encoding endoglucanase from dna metagenome of Binh Chau hot spring in Escherichia coli","authors":"T. T. Thuy, L. Nhung, T. Man, L. Xuan, Nguyen Thi Kim Thoa","doi":"10.15625/0866-7160/v41n2.13726","DOIUrl":"https://doi.org/10.15625/0866-7160/v41n2.13726","url":null,"abstract":"Expression of microbial target genes in Escherichia coli is broadly used due to its advantages namely: well established system, easy to manipulate, a huge biomass, high level productivity, safe and inexpensive to grow. Metagenomic technique has been applying in Vietnam recently for effective mining of uncultured gene resources, especially in endemic mini-ecologies such as hot springs where the cell densities are low. DNA metagenome of Binh Chau hot spring was isolated and sequenced by Illumia HiseqTM. Based on analyses of databases of cellulase-encoded genes, denovogenes 18736 gene sequence for thermal endoglucanase was selected for expression in E. coli. In this paper, some factors for expression of endoglucanase have been investigated. The results show that appropriate gene expression conditions are: Expression performed in E. coli C43 (DE3) on TB medium at 30oC with 0.25 mM of IPTG as inducer, the culture volume of 20% compared with the bottle volume and the expression time is 42–48 hours. In this condition, the biomass production and soluble enzyme activity can reached up to 5.54–5.58 g /L and 1.92–1.98 U/mL, respectively. Our results show the prospect of exploiting microbial genes without culture.","PeriodicalId":409863,"journal":{"name":"TAP CHI SINH HOC","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-06-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114227679","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

Expression of Oryza sativa galactinol synthase gene in maize (Zea may L.) 半乳糖醇合成酶基因在玉米中的表达

TAP CHI SINH HOC Pub Date : 2019-06-25 DOI: 10.15625/0866-7160/v41n2.13584

Phạm Xuân Hội, H. Hue, P. Hang, N. D. Phuong

引用次数: 0

Effects of copper nanoparticles on the morphological and physiological changes in chicken 铜纳米颗粒对鸡形态和生理变化的影响

TAP CHI SINH HOC Pub Date : 2019-06-11 DOI: 10.15625/0866-7160/V41N2.13581

N. Xuan, P. T. T. Trang, L. T. Hien

{"title":"Effects of copper nanoparticles on the morphological and physiological changes in chicken","authors":"N. Xuan, P. T. T. Trang, L. T. Hien","doi":"10.15625/0866-7160/V41N2.13581","DOIUrl":"https://doi.org/10.15625/0866-7160/V41N2.13581","url":null,"abstract":"Copper nanoparticles (nCu) have a wide range of applications in many different fields of life. In poultry farming, nCu is well-known as a feed additive to stimulate the development, a good antimicrobial agent and a suppressor of diarrhea. The aim of this study is to perform the analysis of biosafety of nCu. In this study, chickens were treated with drinking water containing 2 mg/L or 1000 mg/L nCu. After 5 weeks of treatment, the survival rate, dry body weight, Cu content in serum and liver tissues of chickens were examined. Liver and kidney functions were also determined by measuring serum levels of ALT, AST, and creatinine. As a result, chickens treated with drinking containing 2 mg/L nCu had no changes in liver and kidney functions as well as their body weights. However, treatment of chickens with 1000 mg/L nCu caused accumulationof Cu in the serum and liver and increase of the serum levels of ALT and AST compared with control group. Apparently they sick and did not develop properly. In conclusion, nCu concentration at 2 mg/L may be recommended for the agricultural, feed and medicine formulations to meet biological safety.ALT, AST, creatinine, nCu, chicken.","PeriodicalId":409863,"journal":{"name":"TAP CHI SINH HOC","volume":"29 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-06-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128395343","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

Safety assessment and the effect of squalene isolated from schizochytrium mangrovei pq6 on serum hdl - cholesterol levels in animal models 荆芥pq6分离角鲨烯对动物模型血清hdl -胆固醇水平的影响及安全性评价

TAP CHI SINH HOC Pub Date : 2019-06-11 DOI: 10.15625/0866-7160/V41N2.13629

Nguyen Cam Ha, H. M. Hien, Nguyen Hoang Ngan, D. D. Hong

引用次数: 0

Effects of seeds treated with cobalt nanoparticles on germination, growth, yield and quality of soybean cultivar DT12 纳米钴处理对大豆种子萌发、生长、产量和品质的影响

TAP CHI SINH HOC Pub Date : 2019-06-11 DOI: 10.15625/0866-7160/V41N2.13722

L. T. Hien, Trang T. M. Truong

{"title":"Effects of seeds treated with cobalt nanoparticles on germination, growth, yield and quality of soybean cultivar DT12","authors":"L. T. Hien, Trang T. M. Truong","doi":"10.15625/0866-7160/V41N2.13722","DOIUrl":"https://doi.org/10.15625/0866-7160/V41N2.13722","url":null,"abstract":"Seed treatment using metallic nanoparticles to stimulate germination and improve crop yields has been published and widely applied in agriculture production. To assess the safety of such methods on plants, the effectiveness and safety of the treatment of soybean Glycine max L. DT12 seeds with cobalt nanoparticles (nCo) before sowing were investigated. Seeds of soybean cultivar DT12 were treated with nCo at two different concentrations (0.165 and 1.65 mg/kg seed) before sowing. Germination rate, growth speed, soybean yield and bean nutrient components were examined throughout a season. Results implied that at a concentration of 0.165 mg/kg, nCo significantly increased germination rates, plant heights, total pods per plant, number of pods having 3 seeds, and crop productivity compared to both the control and seeds treated with a highter concentration of 16.5 mg per kg of seed. However, no significant differences were found between treatments in terms of growth level and seed nutrient contents, including moisture, ash content, mineral (K, Mg and Fe) and crude protein components. In seeds treated with higher concentration, the Ca content was dramatically lower than that of the control and seeds treated with a low concentration, but bean quality was not affected. This study contributes to the effective and sustainable application of nanomaterials in Vietnamese agriculture. ","PeriodicalId":409863,"journal":{"name":"TAP CHI SINH HOC","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-06-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129147020","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: 2

Analysis of reproductive traits and laying egg rhythm of maize weevil sitophilus zeamais (motschulsky) 玉米象象繁殖性状及产卵节律分析

TAP CHI SINH HOC Pub Date : 2019-06-11 DOI: 10.15625/0866-7160/V41N2.13699

N. V. Duong, Khuat Dang Long, L. Quế

引用次数: 1

An overview of studies on early life history of fish in Vietnam 越南鱼类早期生活史研究综述

TAP CHI SINH HOC Pub Date : 2019-06-11 DOI: 10.15625/0866-7160/V41N2.13752

Tran Duc Hau, Thanh T. Tran, Tạ Thị Thu Thuỷ, K. Izumi

引用次数: 2