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https://www.readbyqxmd.com/read/28101284/exploring-catalase-and-invertase-activity-using-sodium-alginate-encapsulated-yeast-yeast-spheres
#1
Pamela J Bryer
No abstract text is available yet for this article.
December 2016: Journal of Microbiology & Biology Education: JMBE
https://www.readbyqxmd.com/read/28063146/pretreatment-optimization-of-the-biomass-of-microcystis-aeruginosa-for-efficient-bioethanol-production
#2
Muhammad Imran Khan, Moon Geon Lee, Jin Hyuk Shin, Jong Deog Kim
Microalgae are considered to be the future promising sources of biofuels and bio products. The algal carbohydrates can be fermented to bioethanol after pretreatment process. Efficient pretreatment of the biomass is one of the major requirements for commercialization of the algal based biofuels. In present study the microalga, M. aeruginsa was used for pretreatment optimization and bioethanol production. Treatment of algal biomass with CaO before acid and/or enzymatic hydrolysis enhanced the degradation of algal cells...
December 2017: AMB Express
https://www.readbyqxmd.com/read/28046184/nutritive-value-of-extruded-or-multi-enzyme-supplemented-cold-pressed-soybean-cake-for-pigs
#3
T A Woyengo, R Patterson, C L Levesque
The objectives were to determine the standardized ileal digestibility (SID) of AA and NE value of cold-pressed soybean cake (CP-SBC), and the effect of extrusion or adding multi-enzyme to CP-SBC diet for growing pigs. Eight ileal-cannulated pigs (initial BW = 79.7 ± 3.97 kg) were fed 4 diets in a replicated 4 × 4 Latin square design to give 8 replicates per diet. Diets included a cornstarch-based diet with CP-SBC, extruded CP-SBC, and SBC plus multi-enzyme (1,200 U of xylanase, 150 U of glucanase, 500 U of cellulase, 60 U of mannanase, 700 U of invertase, 5,000 U of protease, and 12,000 U of amylase/kilogram of diet; Superzyme-CS, 0...
December 2016: Journal of Animal Science
https://www.readbyqxmd.com/read/28032636/cytosolic-invertase-contributes-to-the-supply-of-substrate-for-cellulose-biosynthesis-in-developing-wood
#4
Umut Rende, Wei Wang, Madhavi Latha Gandla, Leif J Jönsson, Totte Niittylä
Carbon for cellulose biosynthesis is derived from sucrose. Cellulose is synthesized from uridine 5'-diphosphoglucose (UDP-glucose), but the enzyme(s) responsible for the initial sucrose cleavage and the source of UDP-glucose for cellulose biosynthesis in developing wood have not been defined. We investigated the role of CYTOSOLIC INVERTASEs (CINs) during wood formation in hybrid aspen (Populus tremula × tremuloides) and characterized transgenic lines with reduced CIN activity during secondary cell wall biosynthesis...
December 29, 2016: New Phytologist
https://www.readbyqxmd.com/read/28013473/pollution-in-the-urban-soils-of-lianyungang-china-evaluated-using-a-pollution-index-mobility-of-heavy-metals-and-enzymatic-activities
#5
Yu Li, Hong-Guan Li, Fu-Cheng Liu
Soil samples from 16 urban sites in Lianyungang, China were collected and analyzed. A pollution index was used to assess the potential ecological risk of heavy metals and a sequential extraction procedure was used to evaluate the relative distribution of Cu, Zn, Pb, Cd, Cr, and As in exchangeable, carbonate, Fe/Mn oxide, organic/sulfide, and residual fractions. The mobility of heavy metals and urease (URE) activity, alkaline phosphatase (ALP) activity, and invertase (INV) activity of soils was determined. The results showed that the average concentrations of Cu, Zn, Pb, Cd, Cr, and As in Lianyungang soils were much higher than those in the coastal city soil background values of Jiangsu and China...
January 2017: Environmental Monitoring and Assessment
https://www.readbyqxmd.com/read/28012288/peach-leaf-curl-disease-shifts-sugar-metabolism-in-severely-infected-leaves-from-source-to-sink
#6
Stefano Moscatello, Simona Proietti, Roberto Buonaurio, Franco Famiani, Vittorio Raggi, Robert P Walker, Alberto Battistelli
Peach leaf curl is a disease that affects the leaves of peach trees, and in severe cases all of the leaf can be similarly affected. This study investigated some effects of this disease on the metabolism of peach leaves in which all parts of the leaf were infected. These diseased leaves contained very little chlorophyll and performed little or no photosynthesis. Compared to uninfected leaves, diseased leaves possessed higher contents of fructose and especially glucose, but lowered contents of sucrose, sorbitol and especially starch...
December 1, 2016: Plant Physiology and Biochemistry: PPB
https://www.readbyqxmd.com/read/27994611/linking-expression-of-fructan-active-enzymes-cell-wall-invertases-and-sucrose-transporters-with-fructan-profiles-in-growing-taproot-of-chicory-cichorium-intybus-impact-of-hormonal-and-environmental-cues
#7
Hongbin Wei, Anja Bausewein, Heike Steininger, Tao Su, Hongbo Zhao, Karsten Harms, Steffen Greiner, Thomas Rausch
In chicory taproot, the inulin-type fructans serve as carbohydrate reserve. Inulin metabolism is mediated by fructan active enzymes (FAZYs): sucrose:sucrose 1-fructosyltransferase (1-SST; fructan synthesis), fructan:fructan-1-fructosyltransferase (1-FFT; fructan synthesis and degradation), and fructan 1-exohydrolases (1-FEH1/2a/2b; fructan degradation). In developing taproot, fructan synthesis is affected by source-to-sink sucrose transport and sink unloading. In the present study, expression of FAZYs, sucrose transporter and CWI isoforms, vacuolar invertase and sucrose synthase was determined in leaf blade, petiole and taproot of young chicory plants (taproot diameter: 2 cm) and compared with taproot fructan profiles for the following scenarios: (i) N-starvation, (ii) abscisic acid (ABA) treatment, (iii) ethylene treatment (via 1-aminoyclopropane-1-carboxylic acid [ACC]), and (iv) cold treatment...
2016: Frontiers in Plant Science
https://www.readbyqxmd.com/read/27979113/improvement-stability-and-performance-of-invertase-via-immobilization-on-to-silanized-and-polymer-brush-grafted-magnetic-nanoparticles
#8
Gulay Bayramoglu, Tugce Doz, V Cengiz Ozalp, M Yakup Arica
In this study, magnetic nanoparticles (Fe3O4) were modified sequentially with silica (Fe3O4@SiO2), glycidyl methacrylate (GMA) by surface initiated atom transfer radical polymerization (SI-ATRP) and hexamethylene diamine (as a spacer arm). The p(GMA) grafted and SA modified form (i.e., Fe3O4@SiO2@pGMA-SA-3) was used for covalent immobilization of invertase (EC 3.2.1.26). The amount of immobilized enzyme on Fe3O4@SiO2@p(GMA) and Fe3O4@SiO2@p(GMA)-SA-3 was 36.1±0.9 and 33.4±1.3mg/g, respectively. The Km and Vmax values of immobilized invertase were found to be 39...
April 15, 2017: Food Chemistry
https://www.readbyqxmd.com/read/27965631/long-term-application-of-bioorganic-fertilizers-improved-soil-biochemical-properties-and-microbial-communities-of-an-apple-orchard-soil
#9
Lei Wang, Fang Yang, Yaoyao E, Jun Yuan, Waseem Raza, Qiwei Huang, Qirong Shen
Soil biochemical properties and microbial communities are usually considered as important indicators of soil health because of their association with plant nutrition. In this study, we investigated the impact of long-term application of bioorganic fertilizer (BOF) on soil biochemical properties and microbial communities in the apple orchard soil of the Loess Plateau. The experiment included three treatments: (1) control without fertilization (CK); (2) chemical fertilizer application (CF); and (3) bioorganic fertilizer application (BOF)...
2016: Frontiers in Microbiology
https://www.readbyqxmd.com/read/27927993/suppression-of-extracellular-invertase-inhibitor-gene-expression-improves-seed-weight-in-soybean-glycine-max
#10
Xiaofei Tang, Tao Su, Mei Han, Lai Wei, Weiwei Wang, Zhiyuan Yu, Yongguo Xue, Hongbin Wei, Yejie Du, Steffen Greiner, Thomas Rausch, Lijun Liu
Cell wall invertase (CWI) and vacuolar invertase (VI) play multiple functions in plant growth. As well as depending on transcriptional and post-transcriptional regulation, there is growing evidence that CWI and VI are also subject to post-translational control by small inhibitory proteins. Despite the significance of this, genes encoding inhibitors, their molecular and biochemical properties, and their potential roles in regulating seed production have not been well documented in soybean (Glycine max). In this study, two invertase inhibitor isoforms, GmCIF1 and GmC/VIF2, were characterized to possess inhibitory activities in vitro via heterologous expression...
December 7, 2016: Journal of Experimental Botany
https://www.readbyqxmd.com/read/27923989/metabolic-control-of-tobacco-pollination-by-sugars-and-invertases
#11
Marc Goetz, Anne Guivarc'h, Jörg Hirsche, Martin Andreas Bauerfeind, María-Cruz González, Tae Kyung Hyun, Seung Hee Eom, Dominique Chriqui, Thomas Engelke, Dominik K Großkinsky, Thomas Roitsch
Pollination in flowering plants is initiated by germination of pollen grains on stigmas followed by fast growth of pollen tubes representing highly energy-consuming processes. The symplastic isolation of pollen grains and tubes requires import of sucrose available in the apoplast. We show that the functional coupling of sucrose cleavage by invertases and uptake of the released hexoses by monosaccharide transporters are critical for pollination in tobacco. Transcript profiling, in situ hybridization and immunolocalization of extracellular invertases and two monosaccharide transporters in vitro and in vivo support the functional coupling in supplying carbohydrates for pollen germination and tube growth evidenced by spatiotemporally coordinated expression...
December 6, 2016: Plant Physiology
https://www.readbyqxmd.com/read/27920784/the-arabidopsis-angustifolia3-yoda-gene-cascade-induces-anthocyanin-accumulation-by-regulating-sucrose-levels
#12
Lai-Sheng Meng, Ying-Qiu Li, Meng-Qian Liu, Ji-Hong Jiang
Anthocyanin accumulation specifically depends on sucrose (Suc) signaling/levels. However, the gene cascades specifically involved in the Suc signaling/level-mediated anthocyanin biosynthetic pathway are still unknown. Arabidopsis ANGUSTIFOLIA3 (AN3), a transcription coactivator, is involved in the regulation of leaf shape and drought tolerance. Recently, an AN3-CONSTITUTIVE PHOTOMORPHOGENIC 1 gene cascade has been reported to regulate the light signaling-mediated anthocyanin accumulation. Target gene analysis indicates that AN3 is associated with the YODA (YDA) promoter, a mitogen-activated protein kinase kinase kinase, in vivo for inducing anthocyanin accumulation...
2016: Frontiers in Plant Science
https://www.readbyqxmd.com/read/27916945/cytokinins-and-expression-of-sweet-sut-cwinv-and-aap-genes-increase-as-pea-seeds-germinate
#13
Paula E Jameson, Pragatheswari Dhandapani, Ondrej Novak, Jiancheng Song
Transporter genes and cytokinins are key targets for crop improvement. These genes are active during the development of the seed and its establishment as a strong sink. However, during germination, the seed transitions to being a source for the developing root and shoot. To determine if the sucrose transporter (SUT), amino acid permease (AAP), Sugar Will Eventually be Exported Transporter (SWEET), cell wall invertase (CWINV), cytokinin biosynthesis (IPT), activation (LOG) and degradation (CKX) gene family members are involved in both the sink and source activities of seeds, we used RT-qPCR to determine the expression of multiple gene family members, and LC-MS/MS to ascertain endogenous cytokinin levels in germinating Pisum sativum L...
December 1, 2016: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/27915175/distinct-cold-responsiveness-of-a-stinvinh2-gene-promoter-in-transgenic-potato-tubers-with-contrasting-resistance-to-cold-induced-sweetening
#14
Xun Liu, Weiling Shi, Wang Yin, Jichun Wang
Potato (Solanum tuberosum L.) vacuolar invertase (β-fructofuranosidase; EC 3.2.1.26) inhibitor 2 (StInvInh2) plays an important role in cold-induced sweetening (CIS) of potato tubers. The transcript levels of StInvInh2 were increased by prolonged cold in potato tubers with CIS-resistance but decreased in potato tubers with CIS-sensitivity. However, the transcript regulation mechanisms of StInvInh2 responding to prolonged cold are largely unclear in CIS-resistant and CIS-sensitive genotypes. In the present study, the 5'-flanking sequence of the StInvInh2 was cloned, and cis-acting elements were predicted...
November 29, 2016: Plant Physiology and Biochemistry: PPB
https://www.readbyqxmd.com/read/27912968/validation-of-a-thin-layer-chromatography-densitometry-method-for-the-characterization-of-invertase-activity
#15
Justine Ferey, David Da Silva, Sophie Bravo-Veyrat, Pierre Lafite, Richard Daniellou, Benoît Maunit
This paper presents a kinetic study of invertase, a specific fructofuranosidase cloned from the Leishmania major genome. The kinetic parameters of the β-d-fructofuranosidase from Leishmania major (BfrA) were determined using Thin-Layer Chromatography (TLC) and UV-densitometry (TLC@UV) specifically developed for the separation and detection of three carbohydrates namely sucrose, glucose and fructose. Separation was performed on TLC silica gel 60 F254 plates impregnated with sodium bisulphate and citrate and heated prior to development...
December 16, 2016: Journal of Chromatography. A
https://www.readbyqxmd.com/read/27904974/heat-stress-affects-carbohydrate-metabolism-during-cold-induced-sweetening-of-potato-solanum-tuberosum-l
#16
Derek J Herman, Lisa O Knowles, N Richard Knowles
Tolerance to heat stress for retention of low-temperature sweetening-resistant phenotype in potato is conferred by insensitivity of acid invertase activity to cold induction. Heat stress exacerbated cold sweetening (buildup of reducing sugars) of the LTS (low-temperature sweetening)-susceptible potato (Solanum tuberosum L.) cultivars, Ranger Russet and Russet Burbank, and completely abolished the resistance to cold sweetening in the LTS-resistant cultivars/clones, Sage Russet, GemStar Russet, POR06V12-3 and A02138-2...
November 30, 2016: Planta
https://www.readbyqxmd.com/read/27886533/toxicological-effects-of-dimethomorph-on-soil-enzymatic-activity-and-soil-earthworm-eisenia-fetida
#17
Caixia Wang, Qingming Zhang, Feifei Wang, Wenxing Liang
The objective of this study was to evaluate the toxicity of the fungicide dimethomorph to soil microbial activity and the earthworm Eisenia fetida. Multiple biomarkers, namely, four soil enzymes (urease, dehydrogenase, invertase, and acid phosphatase), four earthworm biochemical indices (dismutase, catalase, cellulase, and malondialdehyde), and the transcriptional levels of both target genes (dismutase and catalase) were measured at 1, 10, and 100 mg kg(-1) after 1, 7, 21, and 28 days. The degradation rate of dimethomorph in soil was also determined, and the results indicated that most parameters did not differ from the controls at 1 and 10 mg kg(-1) dimethomorph by the last exposure time (28 d)...
February 2017: Chemosphere
https://www.readbyqxmd.com/read/27871374/catalytic-efficiency-and-thermostability-improvement-of-suc2-invertase-through-rational-site-directed-mutagenesis
#18
Nooshin Mohandesi, Kamahldin Haghbeen, Omid Ranaei, Seyed Shahriar Arab, Sorour Hassani
Engineering of invertases has come to attention because of increasing demand for possible applications of invertases in various industrial processes. Due to the known physicochemical properties, invertases from micro-organisms such as Saccharomyces cerevisiae carrying SUC2 gene are considered as primary models. To improve thermostability and catalytic efficiency of SUC2 invertase (SInv), six influential residues with Relative Solvent Accessibility<5% were selected through multiple-sequence alignments, molecular modelling, structural and computational analyses...
January 2017: Enzyme and Microbial Technology
https://www.readbyqxmd.com/read/27862348/enantioselective-effects-of-metalaxyl-on-soil-enzyme-activity
#19
Heng Yue, Song Fang, Yizhi Zhang, Yang Ning, Weisong Yu, Fanyu Kong, Jun Qiu
The enantioselective effects of the chiral pesticide metalaxyl on soil enzyme activity were investigated. Incubation experiments were conducted to investigate the effects of metalaxyl enantiomers at different concentrations on the activities of urease, invertase, and catalase as well as the type of activity change (activation vs. inhibition) at different times during incubation. The results indicated that the effects of metalaxyl on the activity of soil enzymes were not only related to the concentration of the enantiomers and soil incubation time, but also to the chiral configuration, suggesting the effects were enantioselective...
November 10, 2016: Chirality
https://www.readbyqxmd.com/read/27808326/one-pot-bioinspired-synthesis-of-all-inclusive-protein-protein-nanoflowers-for-point-of-care-bioassay-detection-of-e-coli-o157-h7-from-milk
#20
Ranfeng Ye, Chengzhou Zhu, Yang Song, Junhua Song, Shaofang Fu, Qian Lu, Xu Yang, Mei-Jun Zhu, Dan Du, He Li, Yuehe Lin
Protein-protein conjugates play a vital role in bioassays with their inherent functions of biological recognition and signal amplification. Herein, a one-pot green method for synthesis of all-inclusive protein-protein nanoflowers has been developed. The protein-protein nanoflowers integrate both essential functions of biological recognition and signal amplification, and they were used as ideal signal labels for the sensitive point-of-care detection of Escherichia coli O157:H7. Especially noteworthy, the prepared Con A-invertase-CaHPO4 hybrid nanoflowers simultaneously loaded sufficient invertase and enhanced the activity of the immobilized invertase, which fits well with the requirements of signal labels for bioassays...
December 7, 2016: Nanoscale
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