TY  - JOUR
A1  - Stracke, A.
A1  - Bayer, A.
A1  - Zimmermann, S.
A1  - Wendorff, Joachim Heinz
A1  - Wirges, Werner
A1  - Bauer-Gogonea, Simona
A1  - Bauer, Siegfried
A1  - Gerhard, Reimund
T1  - Relaxation behaviour of electrically induced polar orientation and of optically induced non-polar orientation in an azo-chromophore side group polymer
Y1  - 1999
SN  - 0022-3727
ER  - 
TY  - JOUR
A1  - Park, Misoon
A1  - Krause, Cornelia
A1  - Karnahl, Matthias
A1  - Reichardt, Ilka
A1  - El Kasmi, Farid
A1  - Mayer, Ulrike
A1  - Stierhof, York-Dieter
A1  - Hiller, Ulrike
A1  - Strompen, Georg
A1  - Bayer, Martin
A1  - Kientz, Marika
A1  - Sato, Masa H.
A1  - Nishimura, Marc T.
A1  - Dangl, Jeffery L.
A1  - Sanderfoot, Anton A.
A1  - Jürgens, Gerd
T1  - Concerted Action of Evolutionarily Ancient and Novel SNARE Complexes in Flowering-Plant Cytokinesis
JF  - Developmental cell
N2  - Membrane vesicles delivered to the cell-division plane fuse with one another to form the partitioning membrane during plant cytokinesis, starting in the cell center. In Arabidopsis, this requires SNARE complexes involving the cytokinesis-specific Qa-SNARE KNOLLE. However, cytokinesis still occurs in knolle mutant embryos, suggesting contributions from KNOLLE-independent SNARE complexes. Here we show that Qa-SNARE SYP132, having counterparts in lower plants, functionally overlaps with the flowering plant-specific KNOLLE. SYP132 mutation causes cytokinesis defects, knolle syp132 double mutants consist of only one or a few multi-nucleate cells, and SYP132 has the same SNARE partners as KNOLLE. SYP132 and KNOLLE also have non-overlapping functions in secretion and in cellularization of the embryo-nourishing endosperm resulting from double fertilization unique to flowering plants. Evolutionarily ancient non-specialized SNARE complexes originating in algae were thus amended by the appearance of cytokinesis-specific SNARE complexes, meeting the high demand for membrane-fusion capacity during endosperm cellularization in angiosperms.
Y1  - 2018
U6  - https://doi.org/10.1016/j.devcel.2017.12.027
SN  - 1534-5807
SN  - 1878-1551
VL  - 44
IS  - 4
SP  - 500
EP  - +
PB  - Cell Press
CY  - Cambridge
ER  - 
TY  - JOUR
A1  - Kong, Xiang-Zhao
A1  - Deuber, Claudia A.
A1  - Kittilä, Anniina
A1  - Somogyvári, Márk
A1  - Mikutis, Gediminas
A1  - Bayer, Peter
A1  - Stark, Wendelin J.
A1  - Saar, Martin O.
T1  - Tomographic Reservoir Imaging with DNA-Labeled Silica Nanotracers: The First Field Validation
JF  - Environmental science & technology
N2  - This study presents the first field validation of using DNA-labeled silica nanoparticles as tracers to image subsurface reservoirs by travel time based tomography. During a field campaign in Switzerland, we performed short-pulse tracer tests under a forced hydraulic head gradient to conduct a multisource-multireceiver tracer test and tomographic inversion, determining the two-dimensional hydraulic conductivity field between two vertical wells. Together with three traditional solute dye tracers, we injected spherical silica nanotracers, encoded with synthetic DNA molecules, which are protected by a silica layer against damage due to chemicals, microorganisms, and enzymes. Temporal moment analyses of the recorded tracer concentration breakthrough curves (BTCs) indicate higher mass recovery, less mean residence time, and smaller dispersion of the DNA-labeled nanotracers, compared to solute dye tracers. Importantly, travel time based tomography, using nanotracer BTCs, yields a satisfactory hydraulic conductivity tomogram, validated by the dye tracer results and previous field investigations. These advantages of DNA-labeled nanotracers, in comparison to traditional solute dye tracers, make them well-suited for tomographic reservoir characterizations in fields such as hydrogeology, petroleum engineering, and geothermal energy, particularly with respect to resolving preferential flow paths or the heterogeneity of contact surfaces or by enabling source zone characterizations of dense nonaqueous phase liquids.
Y1  - 2018
U6  - https://doi.org/10.1021/acs.est.8b04367
SN  - 0013-936X
SN  - 1520-5851
VL  - 52
IS  - 23
SP  - 13681
EP  - 13689
PB  - American Chemical Society
CY  - Washington
ER  -