Teichmann, Thomas

[["dc.bibliographiccitation.firstpage","22"],["dc.bibliographiccitation.issue","1"],["dc.bibliographiccitation.journal","Plant Biology"],["dc.bibliographiccitation.lastpage","29"],["dc.bibliographiccitation.volume","6"],["dc.contributor.author","Junghans, Udo"],["dc.contributor.author","Langenfeld-Heyser, Rosemarie"],["dc.contributor.author","Polle, Andrea"],["dc.contributor.author","Teichmann, Thomas"],["dc.date.accessioned","2018-06-25T13:19:42Z"],["dc.date.available","2018-06-25T13:19:42Z"],["dc.date.issued","2004"],["dc.description.abstract","The influence of the auxin transport inhibitors naphthylphthalamic acid (NPA) and methyl-2-chloro-9-hydroxyflurene-9-carboxylate (CF), as well as the gaseous hormone ethylene on cambial differentiation of poplar was determined. NPA treatment induced clustering of vessels and increased vessel length. CF caused a synchronized differentiation of cambial cells into either vessel elements or fibres. The vessels in CF-treated wood were significantly smaller and fibre area was increased compared with controls. Under the influence of ethylene, the cambium produced more parenchyma, shorter fibres and shorter vessels than in controls. Since poplar is the model tree for molecular biology of wood formation, the modulation of the cambial differentiation of poplar towards specific cell types opens an avenue to study genes important for the development of vessels or fibres."],["dc.identifier.doi","10.1055/s-2003-44712"],["dc.identifier.pmid","15095131"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/15143"],["dc.language.iso","en"],["dc.notes.status","final"],["dc.title","Effect of auxin transport inhibitors and ethylene on the wood anatomy of poplar"],["dc.type","journal_article"],["dc.type.internalPublication","unknown"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","887"],["dc.bibliographiccitation.issue","3"],["dc.bibliographiccitation.journal","Plant Physiology"],["dc.bibliographiccitation.lastpage","898"],["dc.bibliographiccitation.volume","127"],["dc.contributor.author","Schützendübel, Andres"],["dc.contributor.author","Schwanz, Peter"],["dc.contributor.author","Teichmann, Thomas"],["dc.contributor.author","Gross, Kristina"],["dc.contributor.author","Langenfeld-Heyser, Rosemarie"],["dc.contributor.author","Godbold, Douglas L."],["dc.contributor.author","Polle, Andrea"],["dc.date.accessioned","2021-11-22T14:31:50Z"],["dc.date.available","2021-11-22T14:31:50Z"],["dc.date.issued","2001"],["dc.description.abstract","To investigate whether Cd induces common plant defense pathways or unspecific necrosis, the temporal sequence of physiological reactions, including hydrogen peroxide (H(2)O(2)) production, changes in ascorbate-glutathione-related antioxidant systems, secondary metabolism (peroxidases, phenolics, and lignification), and developmental changes, was characterized in roots of hydroponically grown Scots pine (Pinus sylvestris) seedlings. Cd (50 microM, 6 h) initially increased superoxide dismutase, inhibited the systems involved in H(2)O(2) removal (glutathione/glutathione reductase, catalase [CAT], and ascorbate peroxidase [APX]), and caused H(2)O(2) accumulation. Elongation of the roots was completely inhibited within 12 h. After 24 h, glutathione reductase activities recovered to control levels; APX and CAT were stimulated by factors of 5.5 and 1.5. Cell death was increased. After 48 h, nonspecific peroxidases and lignification were increased, and APX and CAT activities were decreased. Histochemical analysis showed that soluble phenolics accumulated in the cytosol of Cd-treated roots but lignification was confined to newly formed protoxylem elements, which were found in the region of the root tip that normally constitutes the elongation zone. Roots exposed to 5 microM Cd showed less pronounced responses and only a small decrease in the elongation rate. These results suggest that in cells challenged by Cd at concentrations exceeding the detoxification capacity, H(2)O(2) accumulated because of an imbalance of redox systems. This, in turn, may have triggered the developmental program leading to xylogenesis. In conclusion, Cd did not cause necrotic injury in root tips but appeared to expedite differentiation, thus leading to accelerated aging."],["dc.identifier.doi","10.1104/pp.127.3.887"],["dc.identifier.fs","27899"],["dc.identifier.pmid","11706171"],["dc.identifier.purl","https://resolver.sub.uni-goettingen.de/purl?gs-1/7452"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/93406"],["dc.language.iso","en"],["dc.notes.intern","Migrated from goescholar"],["dc.notes.status","final"],["dc.relation.issn","0032-0889"],["dc.rights.access","openAccess"],["dc.subject","Cadmium; physiological reactions"],["dc.subject.mesh","Antioxidants"],["dc.subject.mesh","Apoptosis"],["dc.subject.mesh","Ascorbate Peroxidases"],["dc.subject.mesh","Cadmium"],["dc.subject.mesh","Cell Differentiation"],["dc.subject.mesh","Glutathione Reductase"],["dc.subject.mesh","Hydrogen Peroxide"],["dc.subject.mesh","Hydroponics"],["dc.subject.mesh","Immunohistochemistry"],["dc.subject.mesh","Lignin"],["dc.subject.mesh","Lipids"],["dc.subject.mesh","Membrane Lipids"],["dc.subject.mesh","Oxidative Stress"],["dc.subject.mesh","Peroxidases"],["dc.subject.mesh","Phenols"],["dc.subject.mesh","Pinus"],["dc.subject.mesh","Plant Roots"],["dc.subject.mesh","Superoxide Dismutase"],["dc.title","Cadmium-induced changes in antioxidative systems, hydrogen peroxide content, and differentiation in Scots pine roots."],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.version","published_version"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","1305"],["dc.bibliographiccitation.issue","9"],["dc.bibliographiccitation.journal","Tree Physiology"],["dc.bibliographiccitation.lastpage","1315"],["dc.bibliographiccitation.volume","28"],["dc.contributor.author","Teichmann, Thomas"],["dc.contributor.author","Bolu-Arianto, Waode Hamsinah"],["dc.contributor.author","Olbrich, Andrea"],["dc.contributor.author","Langenfeld-Heyser, Rosemarie"],["dc.contributor.author","Goebel, Cornelia"],["dc.contributor.author","Grzeganek, Peter"],["dc.contributor.author","Feussner, Ivo"],["dc.contributor.author","Haensch, Robert"],["dc.contributor.author","Polle, Andrea"],["dc.date.accessioned","2018-11-07T11:11:56Z"],["dc.date.available","2018-11-07T11:11:56Z"],["dc.date.issued","2008"],["dc.description.abstract","GH3 genes related tot he auxin-inducible glycine max (L.) Merr. GrnGH3 gene encode enzymes that conjugate amino acids to auxin. To investigate the role of GH3 enzymes in stress responses and normal wood development. Populus x canescens (Ait.) was transformed with the promoter-reporter construct GH3::GUS containing a GH3 promoter and the 5' UTR from soybean. beta-Glucuronidase (GUS) activity was present in the vascular tissues of leaves and in developing lateral roots and was inducible in silent tissues by external auxin application. A decrease in GUS activity front the stern apex to the bottom corresponded to decreases ill auxin concentrations in these tissues. High auxin concentration and high GH3::GUS activity were present ill the pith tissue, which may provide storage for auxin compounds. GH3 reporter was active in ray cells, paratracheal parenchyma cells, maturing vessels and ill cells Surrounding maturing phloem fibers but not ill the cambium and immature phloem, despite high auxin concentrations in the latter tissues. However, the GH3 promoter in these tissues became active when the plants were exposed to abiotic stresses, like bending or salinity, causing changes in wood anatomy. We suggest that adjustment of the internal auxin balance in wood in response to environmental cues involves GH3 auxin conjugate synthases."],["dc.identifier.doi","10.1093/treephys/28.9.1305"],["dc.identifier.gro","3147357"],["dc.identifier.isi","000259126400001"],["dc.identifier.pmid","18595842"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/53547"],["dc.language.iso","en"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.publisher","Oxford Univ Press"],["dc.relation.issn","0829-318X"],["dc.title","GH3 :: GUS reflects cell-specific developmental patterns and stress-induced changes in wood anatomy in the poplar stem"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.status","published"],["dspace.entity.type","Publication"]]