Laboratory Evaluation of the Insecticidal Toxins from Entomopathogenic Nematode Symbiotic Bacteria to Control Vegetable Diseases and Pests

Aims: This research explored the effect of exogenous abscisic acid (ABA) treatment on sugar metabolism in tomato fruits, and provided theoretical basis for the regulation of ABA on the growth and development of tomato fruits. Study Design: The whole tomato plant was treated by spraying with 50 mg·L-1 ABA. Spraying distilled water was as the control. Place and Duration of Study: College of Biological Science and Technology, between February 2019 and March 2020. Methodology: The contents of soluble sugar in tomato fruits were measured with HPLC (High performance liquid chromatography). The enzyme extraction and activities were followed the biochemical method. Results: Exogenous ABA treatment reduced the weight and transverse meridians of the fruit at the ripening stage, but increased the contents of fructose, glucose and sucrose in the fruit. At the same time, it also increased the activities of acid invertase, neutral invertase, and sucrose phosphate synthase at the ripening stage. Conclusions: Exogenous ABA treatment was beneficial to the accumulation of sugar in tomato fruit and improved tomato quality. Therefore, it could be applied to tomato production.

Regulating Function of Exogenous Salicylic Acid on Sugar Metabolism in Tomato Seedlings

Aims: SA (Salicylic acid) is a key regulator for sugar metabolic pathway, but the regulating function on sugar metabolism in tomato seedlings is imperfect. In this study, tomato seedlings were sprayed with SA, and then soluble sugar contents, enzyme related to sugar metabolism levels, gene expressions were determined. Study Design: In order to analyze the mechanism of SA in sugar metabolic pathway, tomato seedlings were sprayed with SA, and then soluble sugar contents, enzyme related to sugar metabolism levels, gene expressions were determined. Place and Duration of Study: College of Biological Science and Technology, between December 2021 and May 2022. Methodology: The expressions of genes related to sugar metabolism in tomato were measured by qRT-PCR. The contents of soluble sugar in tomato seedings were measured with HPLC (High performance liquid chromatography). Results: The sugar metabolism in tomato seedlings was affected by SA treatment for 6 h. The contents of fructose, glucose and sucrose were improved in tomato seedlings by SA treatment. Between 6 to 24 h, enzymatic activities of SlAI, SlNI and SlSS were higher than those in controls, while there was little change in enzyme activity of SISPS. Conclusion: The contents of soluble sugar, enzyme activities related to sugar metabolism had changed considerably by SA treatment. Especially from 6 h to 24 h after SA treatment, the contents of fructose and glucose were significantly higher than those of the control group, and the changes of sugar contents were mainly related to the increases of enzyme activities of AI, NI and SS, suggesting that SA treatment mainly affected the activities of SlAI, SlNI and SlSS to promote the accumulations of soluble sugars.

Prediction and analysis for secretory proteins from Thelazia callipaeda at Genome Scale / 中国人兽共患病学报

We conducted prediction and analysis for secretory proteins from Thelazia callipaeda at Genome Scale based on the previous full genome annotation.The software SignalP,TMHMM,big-PI Predictor,MEME,Protcomp and SecretomeP were combined to process the prediction of the secretome of Thelazia callipaeda.The analyses of secretory proteins by GO function enrichment,KEGG pathway,and statistics of domains were performed.Results showed that totally 259 secretory proteins were found in Thelazia callipaeda genome and the amino acid lengths of secretory proteins were mainly concentrated between 100 to 700 aa exclusively.GO function analysis of secretory proteins indicated that they were enriched in the secreting pathways and in the interactions with host.The results of KEGG metabolism secretory proteins suggested that some of them contributed to drug metabolism and glutathione metabolism.And domain analysis suggested that most of them were glycoside hydrolase,contributing to sugar metabolism.Around 126 secretory proteins had antigenicity of B-cell epitope.In summary,we found that secretory proteins in Thelazia callipaeda were most small proteins,which were involved in sugar metabolism and antioxidative activity,facilitating Thelazia callipaeda to invade the hosts and play a key role in the parasitic course.

Transcriptomic profiling of substrate-dependent autoaggregation in Pseudomonas putida CP1

Aims@#Pseudomonas putida CP1 is an interesting environmental isolate which exhibits substrate-dependent autoaggregation when the organism was grown on 0.5% (w/v) fructose. Autoaggregation is a process of a single bacterial species to develop clumps of cells during a substrate stress. This study was carried out to investigate the genetic changes in the bacterium during aggregate formation. @*Methodology and results@#P. putida CP1 was grown on 0.5% (w/v) fructose in batch culture at 30 °C and 150 rpm. The removal of fructose from the medium corresponded with aggregation of the cells which started after 8 h incubation. Microarray gene expression profiling using a P. putida KT2440 Genome Oligonucleotide Array (Progenika, Spain) showed that 838 genes involved in metabolism and adaptation were differentially expressed in P. putida CP1. Global transcriptomic profiling studies showed that P. putida CP1 growing on fructose resulted in the induction of genes encoding for proteins mainly involved in protein translation, ABC transporters, oxidative phosphorylation and two-component systems (TCS). Novel genes, associated with autoaggregation, were identified using transcriptomic analysis involved in ABC transporter, TCS, flagella assembly and lipopolysaccharide biosynthesis. It was also associated with the up-regulation of genes involved in the flagellar assembly including the fliE gene which encodes for the flagellar hook-basal body protein. @*Conclusion, significance and impact of study@#The identification of new genes involved in autoaggregation formation is important to understand the molecular basis of strain variation and the mechanisms implicated in cell-cell communication.

Nutritional nursing intervention on improvement of blood sugar, blood lipid level in pregnant women with abnormal glucose metabolism / 中国生化药物杂志

Objective To study the effect of nutritional nursing on improving blood lipid and blood glucose of pregnant women with abnormal glucose metabolism. Methods 84 pregnant women with abnormal glucose metabolism from May 2014 to December 2016, were randomly divided into two groups, the control group and the experimental group. The control group was given routine nursing intervention, including the choice of food and food guidance, and so on, according to the method of the diabetes food exchange , at the end of pregnancy, patients were followed up. The experimental group was given strict nutrition nursing intervention, on the basis of the control group. Results The blood glucose levels of pregnant women were significantly higher than in the end of pregnancy, and fasting glucose of mid pregnancy in the control group was significantly lower than the late pregnancy, in the aspect of blood glucose of 2hafter meal and the fasting blood glucose in the middle of pregnancy. Level of lipid triglycerides in the experimental group and the control group were obviously lower than the late pregnancywith statistical significance (P<0.05),and there was no significant difference in high-density lipoprotein cholesterol (hdl-c), low density lipoprotein cholesterol (hdl-c) and total cholesterol levels in mid and late pregnancy between the experimental group and the control group . Conclusion Lipid metabolism disorder is mainly showed as triglycerides in pregnant women with abnormal glucose metabolism, nutritional nursing intervention could effectively control blood sugar levels in pregnant women with abnormal glucose metabolism, without obvious effect on improving blood lipid, and is worthy of application.

Nutritional nursing intervention on improvement of blood sugar, blood lipid level in pregnant women with abnormal glucose metabolism / 中国生化药物杂志

Objective To study the effect of nutritional nursing on improving blood lipid and blood glucose of pregnant women with abnormal glucose metabolism. Methods 84 pregnant women with abnormal glucose metabolism from May 2014 to December 2016, were randomly divided into two groups, the control group and the experimental group. The control group was given routine nursing intervention, including the choice of food and food guidance, and so on, according to the method of the diabetes food exchange , at the end of pregnancy, patients were followed up. The experimental group was given strict nutrition nursing intervention, on the basis of the control group. Results The blood glucose levels of pregnant women were significantly higher than in the end of pregnancy, and fasting glucose of mid pregnancy in the control group was significantly lower than the late pregnancy, in the aspect of blood glucose of 2hafter meal and the fasting blood glucose in the middle of pregnancy. Level of lipid triglycerides in the experimental group and the control group were obviously lower than the late pregnancywith statistical significance (P<0.05),and there was no significant difference in high-density lipoprotein cholesterol (hdl-c), low density lipoprotein cholesterol (hdl-c) and total cholesterol levels in mid and late pregnancy between the experimental group and the control group . Conclusion Lipid metabolism disorder is mainly showed as triglycerides in pregnant women with abnormal glucose metabolism, nutritional nursing intervention could effectively control blood sugar levels in pregnant women with abnormal glucose metabolism, without obvious effect on improving blood lipid, and is worthy of application.

Effect of erva-mate (Ilex paraguariensis A. St.-Hil., Aquifoliaceae) on serum cholesterol, triacylglycerides and glucose in Wistar rats fed a diet supplemented with fat and sugar / Efeito da erva-mate (Ilex paraguariensis A. St.-Hil., Aquifoliaceae) sobre o colesterol, triacilglicerídeos e glucose em ratos Wistar com dieta alimentar suplementada com lipídeos e glicídeos

Ilex paraguariensis A. St.-Hil., Aquifoliaceae, is a species native to the subtropical and temperate regions of South America, used in beverages prepared by infusion such as teas, chimarrão and tererê. To investigate the physiological effects of I. paraguariensis on the metabolism of fats and sugars in Wistar rats, following the ingestion of erva-mate tea, four experimental groups were constructed: Lipid Control Group (receiving water and high-fat diet); Lipid Tea Group (extract of I. paraguariensis and high-fat diet); the Sugar Control Group (water and high-sugar diet); and Sugar Tea Group (extract of I. paraguariensis and high-sugar diet). The animals received their particular diet for 60 days, and were weighed weekly. After this period, the plasma concentrations of cholesterol, glucose and triacylglycerides were determined, together with the weight of visceral fat. The data were subjected to statistical analysis with a significance level of p<0.05. The results show that the ingestion of erva-mate affected body weight, visceral fat and plasma glucose, cholesterol and triacylglyceride levels.

Ilex paraguariensis A. St.-Hil., Aquifoliaceae, é uma espécie nativa das regiões subtropicais e temperadas da América do Sul, usada em bebidas por infusão como chá, chimarrão e tererê. Para verificar os efeitos fisiológicos que a I. paraguariensis pode causar sobre o metabolismo de lipídeos e glicídeos em ratos Wistar, após a ingestão de chá de erva-mate, analisou-se quatro grupos experimentais: Grupo Lipídeo Controle (receberam água e dieta hiperlipídica); Grupo Lipídeo Ingestão (extrato de I. paraguariensis e dieta hiperlipídica); Grupo Glicídeo Controle (receberam água e dieta hiperglicídica); e Grupo Glicídeo Ingestão (extrato de I. paraguariensis e dieta hiperglicídica). Os animais receberam a dieta por 60 dias, de acordo com o grupo que pertenciam, sendo pesados semanalmente. Após esse período, foram avaliadas as concentrações de colesterol, glicose e triacilglicerídeos sanguíneos, e ainda, peso da gordura visceral. Os dados foram analisados estatísticamente. O nível de significância aceito foi p<0,05. Os resultados mostraram que a ingestão de erva-mate atua sobre o peso corpóreo, gordura visceral e taxas de glucose, colesterol e triacilglicerídeos plasmáticos.

Influence of nutrition al habit and physical activities on the disturbance of sugar metabolism

Research on 1060 people who from 20 to 74 years old live in Hanoi. 47% of them was man and 53% was woman. Result: eating and drinking habit has importance effect to the development of diabetes disease. People who eat much fat, drink much beer and eat little vegetable have higher risk of suffering diabetes to use little fat, don’t drink beer and smoke tobacco, and eat more vegetable. People who live in city eat vegetable, fruit and smoke less than suburban but they drink beer much than suburban. Body activity has close relation to the disease condition

Studies on the Oxidative Metabolism of Sugar in the Isolated Rabbit Kidney / 대한비뇨기과학회지

The isolated rabbit kidney was perfused with the blood collected from the donor rabbits. in order to investigate the substrates taken up by the rabbit kidney as the fuels of energy source. Perfusion pressure was set at 150 mmHg which was within the range of autoregulation. Blood glucose was determined by the Somogyi-Nelson method, and O2 and CO2 contents in renal artery and vein were measured by the VanSlyke mercury manometric technique. Radioactivity of 14CO2 in the blood sample derived from 14C-UL-glucose was measured by use of liquid scintillation counter. Respiratory quotient (R.Q.) of rabbit kidney was calculated from the CO2 production and O2 consumption rate. Relative specific activity (R.S.A.) of CO2 was also calculated from the specific activity of plasma glucose and specific activity of CO2. The results were as follows: 1) Average renal blood flow was 1. 41 ml/min-gm kidney. 2) COs content of renal artery and vein were 13.6 mM/L and 15. 5 mM/L respectively. (AV. difference of CO2... 1.9mM/L) and O. content of renal artery and vein were 13.6 vol% and 8.3 vol%. (Av-difference of O2.., 5. 3vol%) 3) COs production rate (VCO2) was 5l. 6 uL/min-gm kidney and O2 consumption rate(VO2) was 73. 6uL,min.gm kidney. Therefore respiratory quotient of kidney was O. r3. 4) Glucose concentration in the perfused blood was 242mg% and the specific activity of plasma glucose was 4, 439 c.p.m/,mgC of glucose. 5) The specific activity of CO2 was 40c,p.m/mgC of CO2 and the relative specific activity was 0.90%. From the above results, it was concluded that glucose is almost not used as the fuel of energy source in the rabbit kidney as found in human and dog kidneys, and suggested the possibility that fats such as free fatty acids are utilized as predominant energy source.