| some aquatic fungi of hyphomycetes on tree leaves. | the presence of the aquatic hyphomycetes in the rain water draining from the leaves of 17 species of trees (8 gymnospermous species and 9 angiospermous species) were studied. evolution of 18 aquatic hyphomycetes species was observed in the water draining from trees. the of most frequently encountered species of aquatic fungi hyphomycetes in rain water draining from trees were anguillospora pseudolongissima, heliscus lugdunensis and vargamyces aquaticus. | 1994 | 7497090 |
| the effect of the herbicide mecoprop on heliscus lugdunensis and its influence on the preferential feeding of gammarus pseudolimnaeus. | | 1998 | 9541557 |
| leaf barriers to fungal colonization and shredders (tipula lateralis) consumption of decomposing eucalyptus globulus. | > abstract herein we assess the importance of leaf cuticle, polyphenolic, and essential oils contents of eucalyptus globulus leaves to hyphomycete colonization and shredder consumption. optical and electron microscopy revealed that, at least during the first 5 weeks of conditioning, the cuticle remains virtually intact. stomata provide the main access for hyphae to internal leaf tissues and, eventually, for spore release. we suggest that in e. globulus leaves, fungal decomposition progresses pre ... | 1999 | 10227874 |
| use of a monoclonal antibody-based immunoassay for the detection and quantification of heliscus lugdunensis colonizing alder leaves and roots. | a genus-specific monoclonal antibody, ng-cf10, raised in a previous study to the fungal pathogen nectria galligena, was found to recognize the aquatic hyphomycete heliscus lugdunensis (anamorph) and its teleomorph nectria lugdunensis. using this mab in a plate trapped antigen- elisa we could detect and determine the biomass of heliscus lugdunensis in mixed assemblages in both naturally occurring and artificially inoculated leaves and roots of alnus glutinosa trees. initial studies indicate that ... | 2001 | 12024233 |
| aquatic hyphomycetes in polluted groundwater habitats of central germany. | polluted groundwater wells located in a former copper shale mining district (11 sites; mansfelder land, central germany) and in meadows of the mulde and elbe rivers (2 sites) were assessed for occurrence and species richness of aquatic hyphomycetes. water temperatures at all sites were relatively low and fluctuated less than in surface waters. oxygen concentrations were always below saturation, whereas sulfate, nitrate, and phosphate levels reached extremely high values in several of the wells. ... | 2003 | 12704555 |
| the influence of genotypic variation on metabolite diversity in populations of two endophytic fungal species. | the relationship between metabolite production and genotypic diversity in two endophytic fungi was investigated. we selected populations of cylindrocarpon destructans and heliscus lugdunensis from the roots of a single tree. a total of 49 isolates of both species were selected and classified by simple genotypic tests (random amplified polymorphic dna analysis and rdna-its sequencing). in a blind test, the ability of these fungi to produce natural products was tested by ethyl acetate extraction o ... | 2004 | 15275667 |
| cadmium and zinc response of the fungi heliscus lugdunensis and verticillium cf. alboatrum isolated from highly polluted water. | the aquatic hyphomycete heliscus lugdunensis and the terrestrial fungus verticillium cf. alboatrum, both isolated from a highly polluted surface water, were investigated for their tolerance against cd and zn. hl-h4 showed a 50% growth inhibition at 0.1 mm cd, whereas at 0.7 mm cd the growth of va-h4 was only reduced by 30%. the fungi also showed a remarkable difference in their zn-tolerance. the growth of va-h4 was not inhibited at 1 mm zn, whereas for hl-h4 no growth occurred above 0.3 mm zn. t ... | 2005 | 15913712 |
| cadmium induces a novel metallothionein and phytochelatin 2 in an aquatic fungus. | cadmium stress response was measured at the thiol peptide level in an aquatic hyphomycete (heliscus lugdunensis). in liquid culture, 0.1 mm cadmium increased the glutathione (gsh) content and induced the synthesis of additional thiol peptides. hplc, electrospray ionization mass spectrometry, and edman degradation confirmed that a novel small metallothionein as well as phytochelatin (pc2) were synthesized. the metallothionein has a high homology to family 8 metallothioneins (http://www.expasy.ch/ ... | 2005 | 15939401 |
| effects of cadmium on aquatic hyphomycetes. | two kinds of experiments, sporulation and growth experiments, were carried out to demonstrate the effect of cadmium on aquatic hyphomycetes. oak (quercus petraea l.) leaves were exposed in a hard-water stream (lüssel, swiss jura) and a soft-water stream (ibach, black forest) for 2 months. in the laboratory, fungal sporulation on the leaves in stream water enriched with cadmium (as cdcl(2)) was studied. a measurable effect was found when the cadmium concentration exceeded 0.1 ppm (0.1 mg/liter). ... | 1984 | 16346604 |
| aquatic hyphomycetes as endophytes of riparian plant roots. | eighteen species of aquatic hyphomycetes were recorded as root endophytes in roots of living plants including grasses and pteridophytes from wet fields near ravine areas. alatospora acuminata, a. pulchella, acaulopage tetraceros, anguillospora crassa, campylospora chaetocladia, lemonniera cornuta, l. pseudofloscula, l. terrestris, pestalotiopsis submersus and tetrachaetum elegans were found for the first time as root endophytes. a. longissima, campylospora purvula, clavariopsis aquatica, cylindr ... | 2005 | 16389955 |
| biotransformation of 1-naphthol by a strictly aquatic fungus. | the aquatic hyphomycete heliscus lugdunensis belongs to a group of exclusively aquatic mitosporic fungi with an only scarcely explored potential to oxidatively attack xenobiotic compounds, and was used to study the biotransformation of the environmental pollutant metabolite 1-naphthol. h. lugdunensis metabolized approximately 74% of 1-naphthol within 5 days. the identification and quantification of degradation products using gas chromatography-mass spectrometry, liquid chromatography-mass spectr ... | 2006 | 16479357 |
| stress response in two strains of the aquatic hyphomycete heliscus lugdunensis after exposure to cadmium and copper ions. | biochemical responses to cadmium (cd2+) and copper (cu2+) exposure were compared in two strains of the aquatic hyphomycete (aqh) heliscus lugdunensis. one strain (h4-2-4) had been isolated from a heavy metal polluted site, the other (h8-2-1) from a moderately polluted habitat. conidia of the two strains differed in shape and size. intracellular accumulation of cd2+ and cu2+ was lower in h4-2-4 than in h8-2-1. both strains synthesized significantly more glutathione (gsh), cysteine (cys) and gamma ... | 2007 | 16900400 |
| cadmium and heat response of the fungus heliscus lugdunensis isolated from highly polluted and unpolluted areas. | induction of heat shock protein (hsp) 70 and distinct metallothionein-like proteins (mtlps) in response to cd and heat treatment were studied in two strains of the aquatic hyphomycete heliscus lugdunensis: hl-h4, isolated from a heavy metal polluted site, and hl-bb taken from an unpolluted area. upon cd-exposure, hsp70 was actively synthesized in the strain hl-h4, and to a much lower degree in the strain hl-bb. the hsp70-expression was time- and dose-dependent, reaching a maximum after 24 h incu ... | 2008 | 17297561 |
| aquatic hyphomycete communities as potential bioindicators for assessing anthropogenic stress. | with a profound knowledge of how physico-chemical parameters affect these communities, microbial communities could be used as indicators for environmental changes and for risk assessment studies. we studied aquatic hyphomycete communities in rivers and aquifers from sites shaped by intense mining activities (namely the "mansfeld region") and chemical industry (cities of halle and bitterfeld) in central germany. environmental stress factors such as high concentrations of heavy metals, sulphate, a ... | 2008 | 17931691 |
| antagonism of some aquatic hyphomycetes against plant pathogenic fungi. | the antagonistic activity of five aquatic hyphomycetes, viz., heliscus lugdunensis, tetrachaetum elegans, tetracladium breve, t. marchalianum, and t. nainitalense, against seven plant pathogenic fungi was studied using a dual culture technique. inhibitory activity of tested aquatic hyphomycetes was determined by measuring the radial growth of plant pathogenic fungi on dual culture plates. tetrachaetum elegans showed antagonistic activity against colletotrichum falcatum, fusarium oxysporum, pyric ... | 2010 | 20454756 |