Schützendübel, Andres

[["dc.bibliographiccitation.firstpage","359"],["dc.bibliographiccitation.issue","3"],["dc.bibliographiccitation.journal","FEMS Microbiology Ecology"],["dc.bibliographiccitation.lastpage","366"],["dc.bibliographiccitation.volume","42"],["dc.contributor.author","Ott, Thomas"],["dc.contributor.author","Fritz, Eberhard"],["dc.contributor.author","Polle, Andrea"],["dc.contributor.author","Schützendübel, Andres"],["dc.date.accessioned","2018-07-10T13:28:08Z"],["dc.date.available","2018-07-10T13:28:08Z"],["dc.date.issued","2002"],["dc.description.abstract","The effect of different cadmium (Cd) concentrations (5, 50 and 500 microM) on growth, Cd accumulation and antioxidative systems was studied in Paxillus involutus, grown in liquid medium. Cd was rapidly accumulated by P. involutus and resulted in growth inhibition within 24 h. Antioxidative enzymes (superoxide dismutase (SOD), EC 1.15.1.1; catalase (CAT), EC 1.11.1.6; monodehydroascorbate radical reductase (MDAR), EC 1.6.5.4; dehydroascorbate reductase (DAR) glutathione reductase (GR), EC 1.8.1.7 and glutathione-dependent peroxidase (GPx), EC 1.11.1.9) were active in the investigated fungus. Furthermore, high concentrations of glutathione but no ascorbate were detected. Cd exposure resulted in a significant induction of SOD activity. However, activities of enzymes responsible for the detoxification of H2O2 showed no Cd-dependent increase or were only transiently induced (CAT, GPx) and no accumulation of H2O2 was detected. Exposure to low Cd concentrations (5 and 50 microM) caused an increase in GR, while 500 microM Cd led to an inhibition of GR and CAT. Increased glutathione concentrations were observed as a consequence of all Cd treatments. These results suggest that the antioxidative protection of the investigated strain of P. involutus was sufficient to avoid Cd-mediated oxidative stress. It is likely that this strain was able to detoxify high concentrations of Cd by transport of Cd into the vacuole because a high correlation between Cd and sulphur in the vacuole was detected by EDX."],["dc.identifier.doi","10.1111/j.1574-6941.2002.tb01025.x"],["dc.identifier.pmid","19709295"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/15170"],["dc.language.iso","en"],["dc.notes.status","final"],["dc.relation.eissn","1574-6941"],["dc.relation.eissn","0168-6496"],["dc.title","Characterisation of antioxidative systems in the ectomycorrhiza-building basidiomycete Paxillus involutus (Bartsch) Fr. and its reaction to cadmium"],["dc.type","journal_article"],["dc.type.internalPublication","unknown"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","91"],["dc.bibliographiccitation.issue","1"],["dc.bibliographiccitation.journal","Plant Biology"],["dc.bibliographiccitation.lastpage","99"],["dc.bibliographiccitation.volume","6"],["dc.contributor.author","Gafur, Abdul"],["dc.contributor.author","Schützendübel, Andres"],["dc.contributor.author","Langenfeld-Heyser, Rosemarie"],["dc.contributor.author","Fritz, Eberhard"],["dc.contributor.author","Polle, Andrea"],["dc.date.accessioned","2018-06-25T12:50:20Z"],["dc.date.available","2018-06-25T12:50:20Z"],["dc.date.issued","2004"],["dc.description.abstract","Isolates of Paxillus involutus (Batsch) Fr. collected from different hosts and environmental conditions were screened for their ability to form ectomycorrhizal symbiosis with hybrid poplar P. x canescens (= Populus tremula L. x P. alba) in vitro. The ability to form ectomycorrhiza varied between the fungal isolates and was not correlated with the growth rate of the fungi on agar-based medium. The isolate MAJ, which was capable of mycorrhiza synthesis under axenic conditions, and the incompetent isolate NAU were characterized morphologically and anatomically. MAJ formed a typical hyphal mantle and a Hartig net, whereas NAU was not able to penetrate the host cell walls and caused thickenings of the outer cell walls of the host. MAJ, but not NAU, displayed strong H2O2 accumulation in the outer hyphal mantle. Increases in H2O2 in the outer epidermal walls and adjacent hyphae of the incompetent isolate were moderate. No increases of H2O2 in response to the mycobionts were found inside roots. Suggested functions of H2O2 production in the outer hyphal mantle of the compatible interaction are: growth regulation of the host's roots, defence against other invading microbes, or increasing plant-innate immunity. The system established here for P. x canescens compatible and incompetent fungal associations will be useful to take advantage of genomic information now available for poplar to study tree-fungal interactions at the molecular and physiological level."],["dc.identifier.doi","10.1055/s-2003-44718"],["dc.identifier.pmid","15095139"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/15141"],["dc.language.iso","en"],["dc.notes.status","final"],["dc.title","Compatible and incompetent Paxillus involutus isolates for ectomycorrhiza formation in vitro with poplar (Populus x canescens) differ in H2O2 production"],["dc.type","journal_article"],["dc.type.internalPublication","unknown"],["dspace.entity.type","Publication"]]