| [radioactivity levels in mushrooms collected in the area of karlsruhe during 1987 and 1988]. | radioactive contamination of wild-growing mushrooms collected in the northern black forest and neighbouring rhine valley area has been monitored since the chernobyl reactor accident. cs-134, cs-137, ag-100m and the natural nuclide k-40 were determined by gamma-spectrometry. pooled data from all species and all locations showed a decrease in the radio-caesium levels from 1986 to 1988, both in mean values and maximum values. samples of the same species collected at the same location exhibited larg ... | 1990 | 2382512 |
| [increased levels of cesium-137 and cesium-134 in 34 mushroom species following the reactor accident at chernobyl]. | from september to december of 1986, 85 samples of 34 species of wild mushrooms were collected, mostly in northern baden and occasionally in neighboring areas. cs-137, cs-134, and the natural nuclide k-40 were determined by gamma-spectrometry. samples from the rhine valley and the kraichgau were generally much less contaminated than those from the black forest. with one exception, their radiocesium levels were below the common market limit of 600 bq/kg. the exception was a sample of laccaria amet ... | 1987 | 3660949 |
| high genetic diversity in a population of the ectomycorrhizal basidiomycete laccaria amethystina in a 150-year-old beech forest | the genetic structure of a population of the ectomycorrhizal basidiomycete laccaria amethystina (bolt. ex hooker) murr. was assessed in a closed 150-year-old beech (fagus sylvatica l.) forest in the vosges mountains in northeastern france. during the autumn of 1994 and 1997, sporophores were collected from three 100-m2 sampling plots located along a 120-m transect crossing the beech stand. the genetic variation of 676 sporophores was initially estimated using heteroduplex analysis of the ribosom ... | 1999 | 10632852 |
| detoxification of ferulic acid by ectomycorrhizal fungi. | the ectomycorrhizal fungi laccaria amethystina and lactarius deterrimus grown in liquid culture were used to study the fate of added ferulic acid. laccaria amethystina degraded ferulic acid to the major metabolite vanillic acid. the intermediate vanillin was not detected. lactarius deterrimus showed a completely different detoxification pattern. two dimers and one trimer of ferulic acid could be identified as polymerization products of this fungus. a bioassay of the possible biological activitie ... | 2003 | 12682834 |
| evidence from population genetics that the ectomycorrhizal basidiomycete laccaria amethystina is an actual multihost symbiont. | it is commonly assumed that ectomycorrhizal (ecm) fungi associated with temperate forest tree roots are not host-specific. because this assumption relies on species delineations based on fruitbodies morphology or ribosomal dna sequences, host-specific, cryptic biological species cannot be ruled out. to demonstrate that laccaria amethystina has true generalist abilities, we sampled 510 fruitbodies on three french sites situated 150-450 km away from each other. at each site, populations from monos ... | 2008 | 18489549 |
| primary structure and specificity of a new member of galectin family from the amethyst deceiver mushroom laccaria amethystina. | a new galectin was characterized in the amethyst deceiver mushroom laccaria amethystina. the complete amino acid (aa) sequence of the lectin, which exhibited β-galactoside specificity, was deduced from its peptide sequences. the aa sequence of l. amethystina galectin (lag) showed high homology with those of the same genus, at 75.6% identity to laccaria bicolor, and 35.5-65.0% to galectins of agrocybe spp. and coprinopsis cinerea. the aa sequence of lag contained all but one conserved residue kno ... | 2011 | 21228493 |
| transfer of (14)c-photosynthate to the sporocarp of an ectomycorrhizal fungus laccaria amethystina. | sporocarps of ectomycorrhizal fungi are strong carbon sinks for the source in host trees, but the details of carbon transfer from the host to the sporocarp are unknown. in this study, single seedlings of japanese red pine (pinus densiflora) colonised by laccaria amethystina were grown on floral foam plates fitted in rhizoboxes, resulting in fruiting on the substrate. the seedlings were photosynthetically labelled with (14)co(2); (14)c-labelled photosynthate transfer from leaves to sporocarps was ... | 2011 | 21698547 |
| similar taxonomic richness but different communities of ectomycorrhizas in native forests and non-native plantation forests. | this investigation sought to examine if there was a difference between the ectomycorrhizal (ecm) communities in plots of native oak and introduced scots pine and sitka spruce forest. the ecm communities in four plots of each forest type were described, from five soil cores collected in each plot, by morphotyping, internal transcribed spacer (its)-restriction fragment length polymorphism matching of mycorrhizas and sporocarps and its sequencing. fifty-one distinct taxa were distinguished; 25 were ... | 2011 | 21947779 |
| extensive gene flow over europe and possible speciation over eurasia in the ectomycorrhizal basidiomycete laccaria amethystina complex. | biogeographical patterns and large-scale genetic structure have been little studied in ectomycorrhizal (em) fungi, despite the ecological and economic importance of em symbioses. we coupled population genetics and phylogenetic approaches to understand spatial structure in fungal populations on a continental scale. using nine microsatellite markers, we characterized gene flow among 16 populations of the widespread em basidiomycete laccaria amethystina over europe (i.e. over 2900 km). we also wide ... | 2011 | 22168318 |