Relevant bibliographies by topics / Spirogyra – Morphology

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Academic literature on the topic 'Spirogyra – Morphology'

Author: Grafiati
Published: 4 June 2021
Last updated: 4 February 2022

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Journal articles on the topic "Spirogyra – Morphology"

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Volkova, Ekaterina A. "Life cycle of Spirogyra decimina var. juergensii (Kütz.) O.V. Petlovany from Lake Baikal." Issues of modern algology (Вопросы современной альгологии), no. 1(16) (2018): 1–7. http://dx.doi.org/10.33624/2311-0147-2018-1(16)-1-7.

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Identification of Spirogyra species is based on the morphology of the fertile specimens. This work provides characteristics of growth and the time of reproduction of Spirogyra decimina var. juergensii in Lake Baikal and describes sexual reproduction and conditions for germination of new filaments of this species isolated from the lake.
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Ferrer, Nora C., and Eduardo J. Cáceres. "Vegetative and reproductive morphology of five Spirogyra species (Zygnematales, Charophyta) in Argentina." Algological Studies 153 (December 1, 2017): 17–34. http://dx.doi.org/10.1127/algol_stud/2016/0264.

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Saragih, H. T., A. A. K. Muhamad, Alfianto Alfianto, et al. "Effects of Spirogyra jaoensis as a dietary supplement on growth, pectoralis muscle performance, and small intestine morphology of broiler chickens." August-2019 12, no. 8 (2019): 1233–39. http://dx.doi.org/10.14202/vetworld.2019.1233-1239.

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Aim: This study aimed to examine the effect of dietary Spirogyra jaoensis in starter feed on growth performance, pectoralis muscle (PM) growth, and small intestine morphology of broiler chickens. Materials and Methods: One hundred twenty one-day-old Cobb-500 broilers (body weight 46±2.6 g) were divided into four equal groups with 3 replicates in each group and given basal feed supplemented with dried S. jaoensis at doses of 0%, 0.5%, 1%, or 2%. The treatment was carried out until the chickens were 18 days old to examine growth of broiler chicks at starter period (8-21 days old). Results: Supplementation with S. jaoensis at doses of 0.5% and 1% resulted in increased weight and improved feed conversion ratio compared to the control group. At the end of treatment, chickens fed with 0.5% and 1% S. jaoensis weighed 428.3±47.8 g and 426.9±31.8 g, respectively, and were significantly heavier than the control group (373.1±44.1 g). Furthermore, parameters related to PM growth and small intestine morphology of chickens supplemented with 0.5% S. jaoensis in basal feed were improved compared to the control group. Conclusion: The results of this research indicate that S. jaoensis at a dose of 0.5% improves growth performance, PM growth, and small intestine morphology in broiler chickens. Keywords: broiler chicken, feed supplement, pectoralis muscle growth, small intestine, Spirogyra jaoensis.
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Mann, S., H. Mann, and W. S. Fyfe. "Intracellular aragonite crystals in the flesh-water alga, Spirogyra sp." Mineralogical Magazine 52, no. 365 (1988): 241–45. http://dx.doi.org/10.1180/minmag.1988.052.365.11.

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AbstractIntracellular crystals of aragonite have been identified by selected area electron diffraction (SAED) in the freshwater filamentous alga Spirogyra sp. which grows sporadically as carpets in the Thames river, Ontario, Canada. The crystals are 2 to 24 µm in length, and characterized by a unique cross-shaped morphology, in which needle-like, or prismatic outgrowths develop from a common axis. Crystals may be dispersed through filaments, but tend to cluster as aggregates towards the centre.
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Permann, Charlotte, Klaus Herburger, Martin Felhofer, Notburga Gierlinger, Louise A. Lewis, and Andreas Holzinger. "Induction of Conjugation and Zygospore Cell Wall Characteristics in the Alpine Spirogyra mirabilis (Zygnematophyceae, Charophyta): Advantage under Climate Change Scenarios?" Plants 10, no. 8 (2021): 1740. http://dx.doi.org/10.3390/plants10081740.

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Extreme environments, such as alpine habitats at high elevation, are increasingly exposed to man-made climate change. Zygnematophyceae thriving in these regions possess a special means of sexual reproduction, termed conjugation, leading to the formation of resistant zygospores. A field sample of Spirogyra with numerous conjugating stages was isolated and characterized by molecular phylogeny. We successfully induced sexual reproduction under laboratory conditions by a transfer to artificial pond water and increasing the light intensity to 184 µmol photons m−2 s−1. This, however was only possible in early spring, suggesting that the isolated cultures had an internal rhythm. The reproductive morphology was characterized by light- and transmission electron microscopy, and the latter allowed the detection of distinctly oriented microfibrils in the exo- and endospore, and an electron-dense mesospore. Glycan microarray profiling showed that Spirogyra cell walls are rich in major pectic and hemicellulosic polysaccharides, and immuno-fluorescence allowed the detection of arabinogalactan proteins (AGPs) and xyloglucan in the zygospore cell walls. Confocal RAMAN spectroscopy detected complex aromatic compounds, similar in their spectral signature to that of Lycopodium spores. These data support the idea that sexual reproduction in Zygnematophyceae, the sister lineage to land plants, might have played an important role in the process of terrestrialization.
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Chimsook, Thitiphan. "Preparation and Characterization of Nanostructured Lipid Carriers Loaded Spirogyra spp. Extract." Advanced Materials Research 894 (February 2014): 323–27. http://dx.doi.org/10.4028/www.scientific.net/amr.894.323.

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Many compounds with high lipophilic character incorporated into nanostructured lipid carriers (NLC) have been reported. However, hydrophilic compounds have not been completely investigated. In this paper, we investigated the potential of lipid nanoparticles as carriers for aqueous extract ofSpirogyraspp. using hot high-pressure homogenization method. The aqueous extract ofSpirogyraspp. (AS-NLC) showed spherical morphology with smooth surface under transmission electron microscope (TEM). The encapsulation efficiency was 61.23±6.25%. The crystallization of AS in NLC was investigated by X-ray diffraction. AS was in an amorphous state in the NLC matrix. Thein vitrorelease experiments of NLC exhibited biphasic release pattern with burst release at the initial 3 h and prolonged release afterwards.
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McCourt, Richard M., and Robert W. Hoshaw. "Noncorrespondence of Breeding Groups, Morphology, and Monophyletic Groups in Spirogyra (Zygnemataceae: Chlorophyta) and the Application of Species Concepts." Systematic Botany 15, no. 1 (1990): 69. http://dx.doi.org/10.2307/2419017.

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Ontawong, Atcharaporn, Naruwan Saowakon, Pornpun Vivithanaporn, et al. "Antioxidant and Renoprotective Effects ofSpirogyra neglecta(Hassall) Kützing Extract in Experimental Type 2 Diabetic Rats." BioMed Research International 2013 (2013): 1–15. http://dx.doi.org/10.1155/2013/820786.

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Spirogyra neglectaextract (SNE) has shown antihyperglycemia and antihyperlipidemia in type 2 diabetic mellitus (T2DM) rats. This study investigated the antioxidant and renoprotective effects of SNE in T2DM rats induced by high-fat diet with low-single dose streptozotocin. T2DM rats were fed daily with SNE (0.25, 0.5, and 1 g/kg BW) for 12 weeks. Renal morphology, malondialdehyde levels, qPCR, and western blotting were analyzed. Renal cortical slices were used to determine renal transport of organic anions, which are estrone sulfate andpara-aminohippurate, mediated through organic anion transporter 3-Oat3. Insulin and PKCζwere known to activate Oat3 function while it was inhibited by PKCα. Compared to T2DM, plasma glucose, triglyceride, insulin resistance, renal morphology, and malondialdehyde levels were significantly improved by SNE supplementation. Reduced glutathione peroxidase and nuclear factorκB expressions were related to antioxidant effect of SNE. Oat3 mRNA and protein were not different among groups, but insulin-stimulated rOat3 followed by anion uptakes was abolished in T2DM. This was restored in the slices from SNE treatment. The mechanism of SNE-improved Oat3 was associated with PKCαand PKCζexpressions and activities. These findings indicate that SNE has beneficial effects on renal transport through antioxidant enzymes and PKCs in T2DM rats.
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Haroun, A. A., I. K. Matazu, Y. Abdulhamid, and J. Sani. "Molecular Identification of Green Algae, Spirogyra Porticalis, along Parts of River Kaduna and its Potential for Singlecell Protein (SCP) Production." NIGERIAN ANNALS OF PURE AND APPLIED SCIENCES 1 (March 13, 2019): 38–43. http://dx.doi.org/10.46912/napas.61.

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The freshwater alga spirogyra porticalis, a filamentous chlorophyte, was collected and identified on the basis of morphology and molecular characteristics. The nutritional composition of the Alga (protein, carbohydrate, moisture, fat, ash) were determined using the AOAC, Official Methods of Analysis. The components of Single Cell Protein (SCP) were determined using method of proximate analysis. The total content of protein (% dry weight) ranged from 12.46-16.89%, carbohydrate from 34.72-39.25%, moisture from 12.97-16.75%, fat from 20.17-22.03%, ash from 10.78-15.98%. The result revealed that this Macroalga has an appreciable amount of protein, carbohydrate, moisture, fat, and ash. Amino acids composition determines the protein quality of Algae. Hence, the amino acids present in the algal sample were extracted and estimated using an automated amino acids Analyzer. The results have shown the presence of the following amino acids; Leu, Lys, Ile, Phe, Val, His, Arg, Met, Trp, Thr, Pro, Tyr, Gly, Glu, Asp, Cys, Ser, Ala. The essential amino acids (Leu, Lys, Ile, Phe, Val, His, Arg, Met, Trp, Thr) profile of the alga as compared with conventional protein sources and the WHO/FAO reference pattern of essential amino acids (g per 100 protein), reveals that the levels of the essential amino acids in the alga were either similar to or greater than the levels of the same amino acids in the reference foods and WHO/FAO reference pattern. Thus, results of the present study shows that S.porticalis is a potential source of single cell protein, and may be of use to the food industry as a source of ingredients with high nutritional value. S. porticalis can provide a dietary alternative due to its nutritional value and its commercial value can be enhanced by improving the quality and expanding the range of freshwater macroalgae based products.
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Chimsook, Thitiphan. "Formulation of Nanostructured Lipid Carriers Loaded with Algae Extract: A Detailed Study of Preparation and Evaluation of Antioxidant Potential for Stabilization of Fish Oil." Applied Mechanics and Materials 799-800 (October 2015): 42–46. http://dx.doi.org/10.4028/www.scientific.net/amm.799-800.42.

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Freshwater macroalgae,Spirogyra spp., were extracted with ethanol and analyzed the antioxidant activity. The total phenolic contents (TPCs) ofSpirogyra spp. ethanolic extract (SE) were 611.38±1.51 mg gallic acid equivalents/g extract and radical DPPH scavenging activity of ethanolic extract was 5248.15±0.20 mM Trolox equivalents/g of dry weight. The Nanostructured Lipid Carriers loaded with ethanolic extract of algae called E-NLCs were prepared by the high shear homogenization method using Compritol 888 ATO, Miglyol oil, Poloxamer 188, extract and Tween 80, respectively. The Particle size (PS), Polydispersity Index (PI), Zeta Potential (ZP) and Entrapment Efficiency (EE) were determined as 110.2 nm ± 5.1, 0.22 ± 0.01 and-14.1 mV ± 1.1, respectively. The appearance of the prepared E-NLCs was spherical morphology. The EE of extract was 66.3±2.25% in NLCs system. Antioxidant potential for stabilization of fish oil was evaluated by the estimation of peroxide values (PV) of fish oil from the catfish, fish oil treated directly with natural antioxidant (SE) and in form of E-NLCs using the butylated hydroxy toluene (BHT) as standard and then incubated at 60 °C for a period of eight days. The results demonstrated that BHT have higher antioxidant potential for fish oil than SE and E-NLCs. Treatment containing E-NLCs and BHT in fish oil showed similar PV after the third day. However, the antioxidant activity of E-NLCs in stabilization of fish oil is higher than that of SE.
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Dissertations / Theses on the topic "Spirogyra – Morphology"

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WANG, JEN-CHYONG. "FIELD AND LABORATORY INVESTIGATIONS OF SPIROGYRA (CHLOROPHYTA, ZYGNEMATACEAE), WITH SPECIAL REFERENCE TO A POLYPLOID SPECIES COMPLEX (ARIZONA)." Diss., The University of Arizona, 1986. http://hdl.handle.net/10150/183812.

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On the basis of three morphological characters (e.g., filament, width, chloroplast number, and type of cell end wall), six filament types of Spirogyra were collected along Bear Creek in the Santa Catalina Mountains near Tucson, Arizona. The occurrence and distribution of filament types showed seasonal and geographical patterns. Filaments were more frequently collected in early summer from pools at lower elevation. Growth of Spirogyra may be influenced by water temperature, pH, and water amount. Most filaments occurred more abundantly while water temperture and pH were relatively high. The number of filament types was greatest at sites with a semi-permanent water supply rather than in temporary and permanent pools. Of the six types of Spirogyra, Type V showed morphological and genetic changes through vegetative growth and sexual reproduction in a clonal culture in the laboratory. After 33 months culturing, a narrower filament-width group (Group II, 22.0 ± 1.1 μm) was produced in the original clone (Group I, 30.9 (+OR-) 0.7 μm). Groups I and II were homothallic and sexually compatible. Zygospores from the cross of I x II yielded germlilngs of Groups I, II, III (27.2 ± 1.0 μm) and a binucleate IV (44.9 ± 0.8 μm). Chromosome counts were: Group I (24), Group II (12), Group III (18), and Group IV (24, one nucleus). Relative nuclear-DNA fluorescence values increased as filament width and chromosome number increased. Cytologically, Group I is a tetraploid, Group II a diploid, and Group III a triploid. Systematically, Groups I, II and III key out to pirogyra singularis, S. communis, and S. fragilis, respectively, using Transeau's monograph on Zygnemataceae. These species are interpreted to be a species complex of S. communis (whose name has priority) with the ancestral haploid (x = 6) missing. Five years after isolation of the original strain in this species complex filaments corresponding to Groups I and II were found at the original collection site. The two field-collected groups were indistinguishable from the laboratory species complex in morphology and chromosome number. Homothallic conjunction within two field width groups yielded progeny similar to those from homothallic conjunction of groups in the laboratory species complex. Filament widths of progeny were generally within the width limits of respective parental groups. The four intergroup crosses between laboratory and field width groups were successful and yielded progeny representing Groups I, II, and III. The similarities in morphology, chromosome numbers, and reproductive behavior of laboratory and field width groups imply that the laboratory species complex of S. communis has a natural counterpart in the field.
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