Lingner, Annika

[["dc.bibliographiccitation.artnumber","1133"],["dc.bibliographiccitation.journal","Frontiers in Plant Science"],["dc.bibliographiccitation.volume","6"],["dc.contributor.author","Avenhaus, Ulrike"],["dc.contributor.author","Cabeza, Ricardo A."],["dc.contributor.author","Liese, Rebecca"],["dc.contributor.author","Lingner, Annika"],["dc.contributor.author","Dittert, Klaus"],["dc.contributor.author","Salinas-Riester, Gabriela"],["dc.contributor.author","Pommerenke, Claudia"],["dc.contributor.author","Schulze, Joachim"],["dc.date.accessioned","2018-11-07T10:19:28Z"],["dc.date.available","2018-11-07T10:19:28Z"],["dc.date.issued","2016"],["dc.description.abstract","Nitrogenase is an oxygen labile enzyme. Microaerobic conditions within the infected zone of nodules are maintained primarily by an oxygen diffusion barrier (ODB) located in the nodule cortex. Flexibility of the ODB is important for the acclimation processes of nodules in response to changes in external oxygen concentration. The hypothesis of the present study was that there are additional molecular mechanisms involved. Nodule activity of Medicago truncatula plants were continuously monitored during a change from 21 to 25 or 30% oxygen around root nodules by measuring nodule H-2 evolution. Within about 2 min of the increase in oxygen concentration, a steep decline in nitrogenase activity occurred. A quick recovery commenced about 8 min later. A qPCR-based analysis of the expression of genes for nitrogenase components showed a tendency toward upregulation during the recovery. The recovery resulted in a new constant activity after about 30 min, corresponding to approximately 90% of the pre-treatment level. An RNAseq-based comparative transcriptome profiling of nodules at that point in time revealed that genes for nodule-specific cysteine-rich (NCR) peptides, defensins, leghaemoglobin and chalcone and stilbene synthase were significantly upregulated when considered as a gene family. A gene for a nicotianamine synthase-like protein (Medtr1g084050) showed a strong increase in count number. The gene appears to be of importance for nodule functioning, as evidenced by its consistently high expression in nodules and a strong reaction to various environmental cues that influence nodule activity. A Tnt1-mutant that carries an insert in the coding sequence (cds) of that gene showed reduced nitrogen fixation and less efficient acclimation to an increased external oxygen concentration. It was concluded that sudden increases in oxygen concentration around nodules destroy nitrogenase, which is quickly counteracted by an increased neoformation of the enzyme. This reaction might be induced by increased formation of NCR peptides and necessitates an efficient iron supply to the bacteroid, which is probably mediated by nicotianamine. The paper is dedicated to the 85th birthday of Prof. Dr. Gunther Schilling, University of Halle/Wittenberg, Germany, https://de.wikipedia.org/wiki/Gunther_Schilling"],["dc.description.sponsorship","Open-Access Publikationsfonds 2015"],["dc.identifier.doi","10.3389/fpls.2015.01133"],["dc.identifier.isi","000367654300001"],["dc.identifier.purl","https://resolver.sub.uni-goettingen.de/purl?gs-1/12764"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/41665"],["dc.notes.intern","Merged from goescholar"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.publisher","Frontiers Media Sa"],["dc.relation.issn","1664-462X"],["dc.rights","CC BY 4.0"],["dc.rights.uri","https://creativecommons.org/licenses/by/4.0"],["dc.title","Short-Term Molecular Acclimation Processes of Legume Nodules to Increased External Oxygen Concentration"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.status","published"],["dc.type.version","published_version"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","6031"],["dc.bibliographiccitation.issue","4"],["dc.bibliographiccitation.journal","International Journal of Molecular Sciences"],["dc.bibliographiccitation.lastpage","6045"],["dc.bibliographiccitation.volume","15"],["dc.contributor.author","Cabeza, Ricardo A."],["dc.contributor.author","Lingner, Annika"],["dc.contributor.author","Liese, Rebecca"],["dc.contributor.author","Sulieman, Saad"],["dc.contributor.author","Senbayram, Mehmet"],["dc.contributor.author","Traenkner, Merle"],["dc.contributor.author","Dittert, Klaus"],["dc.contributor.author","Schulze, Joachim"],["dc.date.accessioned","2018-11-07T09:41:34Z"],["dc.date.available","2018-11-07T09:41:34Z"],["dc.date.issued","2014"],["dc.description.abstract","Legumes match the nodule number to the N demand of the plant. When a mutation in the regulatory mechanism deprives the plant of that ability, an excessive number of nodules are formed. These mutants show low productivity in the fields, mainly due to the high carbon burden caused through the necessity to supply numerous nodules. The objective of this study was to clarify whether through optimal conditions for growth and CO2 assimilation a higher nodule activity of a supernodulating mutant of Medicago truncatula (M. truncatula) can be induced. Several experimental approaches reveal that under the conditions of our experiments, the nitrogen fixation of the supernodulating mutant, designated as sunn (super numeric nodules), was not limited by photosynthesis. Higher specific nitrogen fixation activity could not be induced through short-or long-term increases in CO2 assimilation around shoots. Furthermore, a whole plant P depletion induced a decline in nitrogen fixation, however this decline did not occur significantly earlier in sunn plants, nor was it more intense compared to the wild-type. However, a distinctly different pattern of nitrogen fixation during the day/night cycles of the experiment indicates that the control of N-2 fixing activity of the large number of nodules is an additional problem for the productivity of supernodulating mutants."],["dc.identifier.doi","10.3390/ijms15046031"],["dc.identifier.fs","608778"],["dc.identifier.isi","000336841200057"],["dc.identifier.pmid","24727372"],["dc.identifier.purl","https://resolver.sub.uni-goettingen.de/purl?gs-1/11711"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/33763"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.publisher","Mdpi Ag"],["dc.relation.issn","1422-0067"],["dc.rights.access","openAccess"],["dc.subject.mesh","Carbon Dioxide"],["dc.subject.mesh","Medicago truncatula"],["dc.subject.mesh","Nitrogen"],["dc.subject.mesh","Nitrogen Fixation"],["dc.subject.mesh","Phosphorus"],["dc.subject.mesh","Photosynthesis"],["dc.subject.mesh","Plant Shoots"],["dc.subject.mesh","Root Nodules, Plant"],["dc.title","The Activity of Nodules of the Supernodulating Mutant Mt(sunn) Is not Limited by Photosynthesis under Optimal Growth Conditions"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.status","published"],["dc.type.version","published_version"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","1"],["dc.bibliographiccitation.issue","2"],["dc.bibliographiccitation.journal","Energy, Sustainability and Society"],["dc.bibliographiccitation.lastpage","9"],["dc.bibliographiccitation.volume","6"],["dc.contributor.author","Senbayram, Mehmet"],["dc.contributor.author","Wenthe, Christian"],["dc.contributor.author","Lingner, Annika"],["dc.contributor.author","Isselstein, Johannes"],["dc.contributor.author","Steinmann, Horst"],["dc.contributor.author","Kaya, Cengiz"],["dc.contributor.author","Köbke, Sarah"],["dc.date.accessioned","2017-09-07T11:46:38Z"],["dc.date.available","2017-09-07T11:46:38Z"],["dc.date.issued","2016"],["dc.description.abstract","Background The area used for bioenergy crops (annual row crops (e.g., wheat, maize), herbaceous perennial grasses, and short-rotation woody crops (e.g., poplar)) is increasing because the substitution of fossil fuels by bioenergy is promoted as an option to reduce greenhouse gas (GHG) emissions. However, biomass used for bioenergy production is not per se environmentally benign, since bioenergy crop production is associated with negative side effects such as GHG emissions from soil (dominated by N2O). N2O emissions vary greatly in space and time; thus, direct comparison of soil N2O fluxes from various agro-ecosystems is certainly crucial for the assessment of the GHG reduction potential from energy crops. Methods Therefore, our study aimed to evaluate the two different agro-ecosystems (cropland and agro-forestry) cultivated in central Germany for their environmental impact. In a 1-year field experiment, we compared N2O fluxes from cropland (non-fertilized wheat, N-fertilized wheat, non-fertilized faba bean, and wheat mixed intercropping with faba bean) and agro-forestry (non-fertilized poplar, N-fertilized poplar, non-fertilized Robinia, and poplar mixed intercropping with Robinia) as a randomized split-block design. Results Rainfall at the field site was slightly over average during the period from 1 April to 1 July in 2014 (201 mm rain) and considerably below average during the same period in 2015 (100 mm rain). Cumulative mean N2O fluxes were up to five fold higher in agro-forestry than in arable crop treatments during 2014 growing period. We hypothesized that the difference in N2O emissions when comparing arable land and agro-forestry was mainly due to the limited water and nutrient uptake of plantations during the first year. Among the arable crops (wheat, N-fertilized wheat, wheat mixed intercropped with bean, and bean), seasonal and annual N2O emissions were highest in soils when faba bean was grown as a mono-crop. On the other hand, cumulative mean N2O fluxes were 31 % lower (p < 0.05) when faba bean mixed with wheat than in soils planted with N-fertilized wheat. Conclusions The latter clearly suggests that using legume crops as intercrop or mixed crop in wheat may significantly mitigate fertilizer-derived N2O fluxes and may be an effective proxy for increasing GHG emission savings for energy crops."],["dc.identifier.doi","10.1186/s13705-015-0067-3"],["dc.identifier.gro","3149211"],["dc.identifier.purl","https://resolver.sub.uni-goettingen.de/purl?gs-1/13176"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/5866"],["dc.language.iso","en"],["dc.notes.intern","Isselstein Crossref Import"],["dc.notes.intern","Merged from goescholar"],["dc.notes.status","final"],["dc.notes.submitter","chake"],["dc.relation.issn","2192-0567"],["dc.relation.orgunit","Zentrum für Biodiversität und Nachhaltige Landnutzung"],["dc.rights","CC BY 4.0"],["dc.rights.uri","https://creativecommons.org/licenses/by/4.0/"],["dc.title","Legume-based mixed intercropping systems may lower agricultural born N2O emissions"],["dc.type","journal_article"],["dc.type.internalPublication","unknown"],["dc.type.peerReviewed","no"],["dc.type.subtype","original_ja"],["dc.type.version","published_version"],["dspace.entity.type","Publication"]]