Feußner, Ivo

[["dc.bibliographiccitation.artnumber","e0190884"],["dc.bibliographiccitation.issue","1"],["dc.bibliographiccitation.journal","PLOS ONE"],["dc.bibliographiccitation.volume","13"],["dc.contributor.author","Zdyb, Anna"],["dc.contributor.author","Salgado, Marco G."],["dc.contributor.author","Demchenko, Kirill N."],["dc.contributor.author","Brenner, Wolfram G."],["dc.contributor.author","Płaszczyca, Małgorzata"],["dc.contributor.author","Stumpe, Michael"],["dc.contributor.author","Herrfurth, Cornelia"],["dc.contributor.author","Feussner, Ivo"],["dc.contributor.author","Pawlowski, Katharina"],["dc.date.accessioned","2019-07-09T11:45:13Z"],["dc.date.available","2019-07-09T11:45:13Z"],["dc.date.issued","2018"],["dc.description.abstract","Jasmonic acid (JA), its derivatives and its precursor cis-12-oxo phytodienoic acid (OPDA) form a group of phytohormones, the jasmonates, representing signal molecules involved in plant stress responses, in the defense against pathogens as well as in development. Elevated levels of JA have been shown to play a role in arbuscular mycorrhiza and in the induction of nitrogen-fixing root nodules. In this study, the gene families of two committed enzymes of the JA biosynthetic pathway, allene oxide synthase (AOS) and allene oxide cyclase (AOC), were characterized in the determinate nodule-forming model legume Lotus japonicus JA levels were to be analysed in the course of nodulation. Since in all L. japonicus organs examined, JA levels increased upon mechanical disturbance and wounding, an aeroponic culture system was established to allow for a quick harvest, followed by the analysis of JA levels in whole root and shoot systems. Nodulated plants were compared with non-nodulated plants grown on nitrate or ammonium as N source, respectively, over a five week-period. JA levels turned out to be more or less stable independently of the growth conditions. However, L. japonicus nodules formed on aeroponically grown plants often showed patches of cells with reduced bacteroid density, presumably a stress symptom. Immunolocalization using a heterologous antibody showed that the vascular systems of these nodules also seemed to contain less AOC protein than those of nodules of plants grown in perlite/vermiculite. Hence, aeroponically grown L. japonicus plants are likely to be habituated to stress which could have affected JA levels."],["dc.identifier.doi","10.1371/journal.pone.0190884"],["dc.identifier.pmid","29304107"],["dc.identifier.purl","https://resolver.sub.uni-goettingen.de/purl?gs-1/15062"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/59186"],["dc.language.iso","en"],["dc.notes.intern","Merged from goescholar"],["dc.relation","info:eu-repo/grantAgreement/EC/FP7/282887/EU//INTEGRAL"],["dc.relation.issn","1932-6203"],["dc.rights","CC BY 4.0"],["dc.rights.uri","https://creativecommons.org/licenses/by/4.0"],["dc.subject.ddc","570"],["dc.subject.mesh","Cyclopentanes"],["dc.subject.mesh","Fabaceae"],["dc.subject.mesh","Intramolecular Oxidoreductases"],["dc.subject.mesh","Loteae"],["dc.subject.mesh","Oxylipins"],["dc.subject.mesh","Plant Root Nodulation"],["dc.subject.mesh","RNA, Messenger"],["dc.title","Allene oxide synthase, allene oxide cyclase and jasmonic acid levels in Lotus japonicus nodules."],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.version","published_version"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","907"],["dc.bibliographiccitation.issue","4"],["dc.bibliographiccitation.journal","J Exp Bot"],["dc.bibliographiccitation.lastpage","15;"],["dc.bibliographiccitation.volume","59, 4"],["dc.contributor.author","Stumpe, M."],["dc.contributor.author","Carsjens, J. G."],["dc.contributor.author","Göbel, C."],["dc.contributor.author","Feussner, I."],["dc.date.accessioned","2019-07-10T08:12:40Z"],["dc.date.available","2019-07-10T08:12:40Z"],["dc.date.issued","2008"],["dc.identifier.fs","261599"],["dc.identifier.purl","https://resolver.sub.uni-goettingen.de/purl?goescholar/3255"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/61000"],["dc.language.iso","en"],["dc.notes.intern","Merged from goescholar"],["dc.relation.issn","1460-2431"],["dc.relation.orgunit","Fakultät für Biologie und Psychologie"],["dc.rights","Goescholar"],["dc.rights.uri","https://goescholar.uni-goettingen.de/licenses"],["dc.subject.ddc","570"],["dc.title","Divinyl ether synthesis in garlic bulbs."],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.version","published_version"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","1"],["dc.bibliographiccitation.issue","95"],["dc.bibliographiccitation.journal","Frontiers in Plant Science"],["dc.bibliographiccitation.lastpage","24"],["dc.bibliographiccitation.volume","2"],["dc.contributor.author","Ibrahim, Amina"],["dc.contributor.author","Schütz, Anna-Lena"],["dc.contributor.author","Galano, Jean-Marie"],["dc.contributor.author","Herrfurth, Cornelia"],["dc.contributor.author","Feussner, Kirstin"],["dc.contributor.author","Durand, Thierry"],["dc.contributor.author","Brodhun, Florian"],["dc.contributor.author","Feussner, Ivo"],["dc.date.accessioned","2019-07-09T11:53:15Z"],["dc.date.available","2019-07-09T11:53:15Z"],["dc.date.issued","2011"],["dc.description.abstract","Galactolipids constitute the major lipid class in plants. In recent years oxygenated derivatives of galactolipids have been detected. They are discussed as signal molecules during leaf damage, since they accumulate in wounded leaves in high levels. Using different analytical methods such as nuclear magnetic resonance, infra-red spectroscopy, and high performance liquid chromatography/mass spectrometry (HPLC/MS) earlier reports focused on the analysis of either oxidized or non-oxidized species and needed high levels of analytes. Here, we report on the analysis of the galactolipid subfraction of the Arabidopsis leaf lipidome by an improved HPLC/MS2-based method that is fast, robust, and comparatively simple in its performance. Due to a combination of phase partitioning, solid phase fractionation, liquid chromatography, and MS2 experiments this method has high detection sensitivity and requires only low amounts of plant material. With this method 167 galactolipid species were detected in leaves of Arabidopsis thaliana. Out of these 79 being newly described species. From all species the head group and acyl side chains were identified via MS2 experiments. Moreover, the structural identification was supported by HPLC/time-of-flight (TOF)-MS and gas chromatography (GC)/MS analysis. The quantification of different galactolipid species that accumulated 30 min after a mechanical wounding in A. thaliana leaves showed that the oxidized acyl side chains in galactolipids are divided into 65% cyclopentenones, 27% methyl-branched ketols, 3.8% hydroperoxides/straight-chain ketols, 2.0% hydroxides, and 2.6% phytoprostanes. In comparison to the free cyclopentenone derivatives, the esterified forms occur in a 149-fold excess supporting the hypothesis that galactolipids might function as storage compounds for cyclopentenones. Additional analysis of the ratio of non-oxidized to oxidized galactolipid species in leaves of wounded plants was performed resulting in a ratio of 2.0 in case of monogalactosyl diacylglycerol (MGD), 8.1 in digalactosyl diacylglycerol (DGD), and 0.6 in the acylated MGD. This indicates that galactolipid oxidation is a major and rapid metabolic process that occurs class specific."],["dc.identifier.doi","10.3389/fpls.2011.00095"],["dc.identifier.fs","587782"],["dc.identifier.purl","https://resolver.sub.uni-goettingen.de/purl?gs-1/7190"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/60379"],["dc.language.iso","en"],["dc.notes.intern","Merged from goescholar"],["dc.publisher","Frontiers Research Foundation"],["dc.relation.eissn","1664-462X"],["dc.rights","CC BY-NC 3.0"],["dc.rights.uri","https://creativecommons.org/licenses/by-nc/3.0"],["dc.subject.ddc","570"],["dc.title","The alphabet of galactolipids in Arabidopsis thaliana"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.version","published_version"],["dspace.entity.type","Publication"]]