26 results match your criteria surface velutina

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Investigations on inhibitory effects of nickel and cobalt salts on the decolorization of textile dyes by the white rot fungus Phanerochaete velutina.

Ecotoxicol Environ Saf 2021 Jun 12;215:112093. Epub 2021 Mar 12.

Department of Microbiology, Faculty of Agriculture and Forestry, University of Helsinki, (Biocenter 1, Viikinkaari 9), Finland.

Organic aromatic compounds used for dyeing and coloring in the textile industry are persistent and hazardous pollutants that must be treated before they are discharged into rivers and surface waters. Therefore, we investigated the potential of the white rot fungus Phanerochaete velutina to decolorize commonly used reactive dyes. The fungus decolorized in average 55% of Reactive Orange 16 (RO-16) after 14 days at a maximum rate of 0. Read More

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Ecological memory and relocation decisions in fungal mycelial networks: responses to quantity and location of new resources.

ISME J 2020 02 18;14(2):380-388. Epub 2019 Oct 18.

School of Biosciences, Cardiff University, Museum Avenue, Cardiff, CF10 3AX, UK.

Saprotrophic cord-forming basidiomycetes, with their mycelial networks at the soil/litter interface on the forest floor, play a major role in wood decomposition and nutrient cycling/relocation. Many studies have investigated foraging behaviour of their mycelium, but there is little information on their intelligence. Here, we investigate the effects of relative size of inoculum wood and new wood resource (bait) on the decision of a mycelium to remain in, or migrate from, inoculum to bait using Phanerochaete velutina as a model. Read More

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February 2020

Indigenous strains of Beauveria and Metharizium as potential biological control agents against the invasive hornet Vespa velutina.

J Invertebr Pathol 2018 03 1;153:180-185. Epub 2018 Mar 1.

UMR 1065 Santé et Agroécologie du Vignoble, INRA, ISVV, Villenave d'Ornon, France. Electronic address:

Alien species often miss parasites in their invaded area, and this is the case in Vespa velutina. This invasive hornet predator of bees was accidentally introduced in Europe from East China in 2004. The control of this species is still problematic. Read More

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Recombinant fungal lectin as a new tool to investigate O-GlcNAcylation processes.

Glycobiology 2017 01 18;27(2):123-128. Epub 2016 Oct 18.

CERMAV, UPR5301, CNRS  and Université Grenoble Alpes, 38041 Grenoble, France

Glycosylation is a group of post-translational modifications that displays a large variety of structures and are implicated in a plethora of biological processes. Therefore, studying glycosylation requires different technical approaches and reliable tools, lectins being part of them. Here, we describe the use of the recombinant mushroom lectin PVL to discriminate O-GlcNAcylation, a modification consisting in the attachment of a single N-acetylglucosamine residue to proteins confined within the cytosolic, nuclear and mitochondrial compartments. Read More

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January 2017

A recombinant fungal lectin for labeling truncated glycans on human cancer cells.

PLoS One 2015 4;10(6):e0128190. Epub 2015 Jun 4.

CERMAV, UPR5301, CNRS, University Grenoble Alpes, 38041 Grenoble, France.

Cell surface glycoconjugates present alterations of their structures in chronic diseases and distinct oligosaccharide epitopes have been associated with cancer. Among them, truncated glycans present terminal non-reducing β-N-acetylglucosamine (GlcNAc) residues that are rare on healthy tissues. Lectins from unconventional sources such as fungi or algi provide novel markers that bind specifically to such epitopes, but their availability may be challenging. Read More

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When vegetation change alters ecosystem water availability.

Glob Chang Biol 2014 Jul 26;20(7):2198-210. Epub 2014 Apr 26.

Southwest Watershed Research Center, USDA-ARS, Tucson, 85716, AZ, USA.

The combined effects of vegetation and climate change on biosphere-atmosphere water vapor (H2 O) and carbon dioxide (CO2 ) exchanges are expected to vary depending, in part, on how biotic activity is controlled by and alters water availability. This is particularly important when a change in ecosystem composition alters the fractional covers of bare soil, grass, and woody plants so as to influence the accessibility of shallower vs. deeper soil water pools. Read More

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G₂/M cell cycle arrest by an N-acetyl-D-glucosamine specific lectin from Psathyrella asperospora.

Glycoconj J 2014 Jan 27;31(1):61-70. Epub 2013 Sep 27.

Institute for Glycomics, Griffith University, Gold Coast Campus, Griffith, QLD, 4222, Australia.

A new N-acetyl-D-glucosamine (GlcNAc) specific lectin was identified and purified from the fruiting body of the Australian indigenous mushroom Psathyrella asperospora. The functional lectin, named PAL, showed hemagglutination activity against neuraminidase treated rabbit and human blood types A, B and O, and exhibited high binding specificity towards GlcNAc, as well as mucin and fetuin, but not against asialofetuin. PAL purified to homogeneity by a combination of ammonium sulfate precipitation, chitin affinity chromatography and size exclusion chromatography, was monomeric with a molecular mass of 41. Read More

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January 2014

Improved bioconversion of poplar by synergistic treatments with white-rot fungus Trametes velutina D10149 pretreatment and alkaline fractionation.

Bioresour Technol 2013 Feb 22;130:578-83. Epub 2012 Dec 22.

Institute of Biomass Chemistry and Technology, College of Material Science and Technology, Beijing Forestry University, Beijing 100083, China.

Successive treatments with fungus and alkali were proposed to reduce the recalcitrance and improved the enzymatic digestibility of triploid poplar. Biopretreatment with Trametes velutina D10149 for 0, 4, 8, 12 and 16weeks gradually degraded hemicelluloses and lignin, and improved the digestibility of cellulose from 4.0% to 19. Read More

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February 2013

Saprotrophic basidiomycete mycelia and their interspecific interactions affect the spatial distribution of extracellular enzymes in soil.

FEMS Microbiol Ecol 2011 Oct 26;78(1):80-90. Epub 2011 May 26.

Laboratory of Environmental Microbiology, Institute of Microbiology of the ASCR, Prague, Czech Republic.

Saprotrophic cord-forming basidiomycetes are important decomposers of lignocellulosic substrates in soil. The production of extracellular hydrolytic enzymes was studied during the growth of two saprotrophic basidiomycetes, Hypholoma fasciculare and Phanerochaete velutina, across the surface of nonsterile soil microcosms, along with the effects of these basidiomycetes on fungi and bacteria within the soil. Higher activities of α-glucosidase, β-glucosidase, cellobiohydrolase, β-xylosidase, phosphomonoesterase and phosphodiesterase, but not of arylsulphatase, were recorded beneath the mycelia. Read More

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October 2011

Canopy stomatal conductance following drought, disturbance, and death in an upland oak/pine forest of the new jersey pine barrens, USA.

Front Plant Sci 2011 20;2:15. Epub 2011 May 20.

Department of Biological Sciences, Rutgers University Newark, NJ, USA.

Stomatal conductance controls carbon and water fluxes in forest ecosystems. Therefore, its accurate characterization in land-surface flux models is necessary. Sap-flux scaled canopy conductance was used to evaluate the effect of drought, disturbance, and mortality of three oak species (Quercus prinus, Q. Read More

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Identification of Lacrymaria velutina (Pers. Ex Fr.) Konrad & Maubl. from Micheon-myeon, Jinju-city, Korea.

Mycobiology 2010 Dec 31;38(4):249-55. Epub 2010 Dec 31.

Department of Applied Biology & Research Institute of Life Science, Gyeongsang National University, Jinju 600-701, Korea.

We identified Lacrymaria velutina of the Coprinaceae in Korea. The unusually large and sturdy fruiting body, fibrillose to fibrillose-scaly cap and stalk without a volva with an obscure superior hairy ring zone or hairy annulus, and blackish brown, warted spores distinguished this species from closely related Psathyrella species. An illustrated account of the microscopic traits is presented. Read More

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December 2010

Single molecular dynamic interactions between glycophorin A and lectin as probed by atomic force microscopy.

Biophys Chem 2009 Sep 2;144(1-2):72-7. Epub 2009 Jul 2.

Laboratory of Biodynamics, Graduate School of Bioscience and Biotechnology, Tokyo Institute of Technology, Midori-ku, Yokohama, Kanagawa 226-8501, Japan.

Glycophorin A (GpA) is one of the most abundant transmembrane proteins in human erythrocytes and its interaction with lectins has been studied as model systems for erythrocyte related biological processes. We performed a force measurement study using the force mode of atomic force microscopy (AFM) to investigate the single molecular level biophysical mechanisms involved in GpA-lectin interactions. GpA was mounted on a mica surface or natively presented on the erythrocyte membrane and probed with an AFM tip coated with the monomeric but multivalent Psathyrella velutina lectin (PVL) through covalent crosslinkers. Read More

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September 2009

Diurnal and seasonal variation in the carbon isotope composition of leaf dark-respired CO(2) in velvet mesquite (Prosopis velutina).

Plant Cell Environ 2009 Oct 10;32(10):1390-400. Epub 2009 Jun 10.

Department of Renewable Resources, University of Wyoming, Laramie, WY 82071, USA.

We evaluated diurnal and seasonal patterns of carbon isotope composition of leaf dark-respired CO(2) (delta(13)C(l)) in the C(3) perennial shrub velvet mesquite (Prosopis velutina) across flood plain and upland savanna ecosystems in the south-western USA. delta(13)C(l) of darkened leaves increased to maximum values late during daytime periods and declined gradually over night-time periods to minimum values at pre-dawn. The magnitude of the diurnal shift in delta(13)C(l) was strongly influenced by seasonal and habitat-related differences in soil water availability and leaf surface vapour pressure deficit. Read More

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October 2009

Climatic/edaphic controls on soil carbon/nitrogen response to shrub encroachment in desert grassland.

Ecol Appl 2007 Oct;17(7):1911-28

Department of Global Ecology, Carnegie Institution, 260 Panama Street, Stanford, California 94305, USA.

The proliferation of woody plants in grasslands over the past 100+ years can alter carbon, nitrogen, and water cycles and influence land surface-atmosphere interactions. Although the majority of organic carbon in these ecosystems resides belowground, there is no consensus on how this change in land cover has affected soil organic carbon (SOC) and total nitrogen (TN) pools. The degree to which duration of woody plant occupation, climate, and edaphic conditions have mediated SOC and TN responses to changes in life-form composition are poorly understood. Read More

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October 2007

Foraging behaviour of Armillaria rhizomorph systems.

Mycol Res 2005 Nov;109(Pt 11):1195-207

Division of Plant Sciences, University of Missouri, Columbia, MO 65211, USA.

The foraging behaviour of Armillaria rhizomorph systems is poorly understood owing to their cryptic position within the soil. We investigated foraging in a homogeneous environment (i.e. Read More

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November 2005

Macromolecular dimensions and mechanical properties of monolayer films of Sonorean mesquite gum.

Macromol Biosci 2004 Sep;4(9):865-74

Laboratory of Biopolymers, Centro de Investigación en Alimentación y Desarrollo, A.C. (C.I.A.D., A.C.) P.O. Box 1735 Hermosillo, Sonora, 83000, Mexico.

Mesquite gum sourced from Prosopis velutina trees and gum arabic (Acacia spp.) were characterized using light scattering and Langmuir isotherms. Both gum materials were fractionated by hydrophobic interaction chromatography, yielding four fractions for both gums: FI, FIIa, FIIb and FIII in mesquite gum and FI, FII, FIIIa and FIIIb in gum arabic. Read More

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September 2004

First Report of Xylella fastidiosa Associated with Leaf Scorch in Black Oak in Washington, D.C.

Authors:
Q Huang

Plant Dis 2004 Feb;88(2):224

Floral and Nursery Plants Research Unit, U.S. National Arboretum, USDA-Agricultural Research Service, Beltsville, MD 20705.

Bacterial leaf scorch caused by Xylella fastidiosa has been reported in 17 species of oak including bur, pin, red, scarlet, shingle, and white oaks (3). In September 2002, a leaf scorch symptom characterized by marginal necrosis of leaves bordered by a darker brown band was observed in a mature black oak (Quercus velutina Lam.) at the U. Read More

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February 2004

Psathyrella velutina lectin as a specific probe for N-acetylneuraminic acid in glycoconjugates.

Methods Enzymol 2003 ;363:77-90

Graduate School of Humanities and Sciences, Ochanomizu University, 2-1-1 Otsuka, Bunkyo-ku, Tokyo 112-8610, Japan.

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December 2003

A beta-N-acetylglucosaminyl phosphate diester residue is attached to the glycosylphosphatidylinositol anchor of human placental alkaline phosphatase: a target of the channel-forming toxin aerolysin.

J Biol Chem 2003 Sep 8;278(38):36296-303. Epub 2003 Jul 8.

Department of Biochemistry, Sasaki Institute, 2-2 Kanda-Surugadai, Chiyoda-ku, Tokyo 101-0062, Japan.

Glycosylphosphatidylinositol (GPI)-anchored proteins are ubiquitous in eukaryotes. The minimum conserved GPI core structure of all GPI-anchored glycans has been determined as EtN-PO4-6Manalpha1-2Manalpha1-6Manalpha1-4GlcN-myo-inositol-PO3H. Human placental alkaline phosphatase (AP) has been reported to be a GPI-anchored membrane protein. Read More

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September 2003

Contrasting patterns of hydraulic redistribution in three desert phreatophytes.

Oecologia 2003 Apr 14;135(2):167-75. Epub 2003 Feb 14.

School of Renewable Natural Resources, University of Arizona, Tucson, AZ 85721, USA.

We measured sap flow in taproots, lateral roots and stems within a single individual in each of three co-occurring tree species in a Chihuahuan desert arroyo to assess the seasonality and magnitude of hydraulic redistribution. Nocturnal reverse flow (hydraulic redistribution) was detected in shallow lateral roots of Fraxinus velutina and Juglans major during periods when surface soils were dry. Reverse flow in the Fraxinus lateral root ranged from near zero to 120 g h(-1), and was inversely correlated with nighttime vapor pressure deficit (D), suggesting that nighttime transpiration may have inhibited hydraulic redistribution. Read More

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Interaction of glycophorin A with lectins as measured by surface plasmon resonance (SPR).

Acta Biochim Pol 2002 ;49(2):481-90

Department of Medical Biochemistry, University Medical School, Wrocław, Poland.

Glycophorin A (GPA), the major sialoglycoprotein of the human erythrocyte membrane, was isolated from erythrocytes of healthy individuals of blood groups A, B and O using phenol-water extraction of erythrocyte membranes. Interaction of individual GPA samples with three lectins (Psathyrella velutina lectin, PVL; Triticum vulgaris lectin, WGA and Sambucus nigra I agglutinin SNA-I) was analyzed using a BIAcore biosensor equipped with a surface plasmon resonance (SPR) detector. The experiments showed no substantial differences in the interaction between native and desialylated GPA samples originating from erythrocytes of either blood group and each of the lectins. Read More

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October 2003

Psathyrella velutina Mushroom Lectin Exhibits High Affinity toward Sialoglycoproteins Possessing Terminal N-Acetylneuraminic Acid alpha 2,3-Linked to Penultimate Galactose Residues of Trisialyl N-Glycans. Comparison with other sialic acid-specific lectins.

J Biol Chem 2002 Jul 1;277(28):24916-25. Epub 2002 May 1.

Department of Advanced Biosciences, Graduate School of Humanities and Sciences, Ochanomizu University, Bunkyo-ku, Tokyo 112-8610, Japan.

A lectin from the fruiting body of the Psathyrella velutina mushroom (PVL) was found to bind specifically to N-acetylneuraminic acid, as well as to GlcNAc (Ueda, H., Kojima, K., Saitoh, T. Read More

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Mycelial dynamics during interactions between Stropharia caerulea and other cord-forming, saprotrophic basidiomycetes.

New Phytol 2001 Sep;151(3):691-704

Cardiff School of Biosciences, University of Wales, Cardiff CF10 3TL, Wales, UK.

•  Macroscopic mycelial interactions between Stropharia caerulea and four other cord-forming wood decomposer basidiomycetes (Phanerochaete velutina, Phallus impudicus, Hypholoma fasciculare and Agrocybe gibberosa) on nonsterile soil were quantified using nondestructive image analysis. •  Interaction development and outcome was species dependent. Once S. Read More

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September 2001

Analysis of agalacto-IgG in rheumatoid arthritis using surface plasmon resonance.

Glycoconj J 2000 May;17(5):323-9

Department of Biomedicine and Surgery, Linköping University, Sweden.

It is well established that IgG from rheumatoid arthritis (RA) patients are less galactosylated than IgG from normal individuals. Determination of agalacto-IgG may therefore aid in diagnosis and treatment of RA. The decrease in galactosylation of IgG leads to an increase in terminal N-acetylglucosamine residues, which can be detected using a specific lectin from Psathyrella velutina. Read More

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FUNGAL POPULATION AND COMMUNITY DEVELOPMENT IN CUT BEECH LOGS: III. SPATIAL DYNAMICS, INTERACTIONS AND STRATEGIES.

New Phytol 1985 Sep;101(1):183-198

School of Biological Sciences, University of Bath, Claverton Down, Bath, BA2 7AY, UK.

The spatial development, in beech logs exposed to air-borne and soil-borne inoculum, of mature fungal communities containing mutually or unilaterally exclusive mycelia of decay species is described and related to the ecological strategies and interaction of participant individuals. A combative heirarchy is recognized between (i) ruderal and/or stress-tolerant individuals which are spatially dominant early on and then decline, through (ii) air-borne combative individuals of decay fungi, such as Coriolus versicolor (L. ex Fr. Read More

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September 1985

FUNGAL POPULATION AND COMMUNITY DEVELOPMENT IN CUT BEECH LOGS: II. ESTABLISHMENT VIA THE BURIED CUT SURFACE.

New Phytol 1985 Sep;101(1):173-181

School of Biological Sciences, University of Bath, Claverton Down, Bath BA2 7AY, UK.

Patterns of fungal colonization from the base of cut beech logs placed upright and partly buried in the ground at a mixed deciduous woodland site were fundamentally different from those from the aerial cut surface. Principal colonists resulting in decay, and mostly arriving within three months, were the ascomycete Xylaria hypoxylon (L. ex Hooker) Greville and various rhizomorph/mycelial cord-forming basidiomycetes, including Armillaria bulbosa (Barla) Kile & Watling, Phallus impudicus (L. Read More

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September 1985
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