Search Results - (Author, Cooperation:M. Geisler)
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1E. Barbez ; M. Kubes ; J. Rolcik ; C. Beziat ; A. Pencik ; B. Wang ; M. R. Rosquete ; J. Zhu ; P. I. Dobrev ; Y. Lee ; E. Zazimalova ; J. Petrasek ; M. Geisler ; J. Friml ; J. Kleine-Vehn
Nature Publishing Group (NPG)
Published 2012Staff ViewPublication Date: 2012-04-17Publisher: Nature Publishing Group (NPG)Print ISSN: 0028-0836Electronic ISSN: 1476-4687Topics: BiologyChemistry and PharmacologyMedicineNatural Sciences in GeneralPhysicsKeywords: Arabidopsis/cytology/genetics/growth & development/*metabolism ; Arabidopsis Proteins/genetics/*metabolism ; Carrier Proteins/genetics/*metabolism ; Endoplasmic Reticulum/metabolism ; Genes, Plant/genetics ; Germination ; *Homeostasis ; Indoleacetic Acids/*metabolism ; Intracellular Space/*metabolism ; *Multigene Family ; Mutant Proteins/genetics/metabolism ; Plants, Genetically Modified ; Promoter Regions, Genetic/genetics ; Saccharomyces cerevisiae/genetics/metabolismPublished by: -
2K. Howe ; M. D. Clark ; C. F. Torroja ; J. Torrance ; C. Berthelot ; M. Muffato ; J. E. Collins ; S. Humphray ; K. McLaren ; L. Matthews ; S. McLaren ; I. Sealy ; M. Caccamo ; C. Churcher ; C. Scott ; J. C. Barrett ; R. Koch ; G. J. Rauch ; S. White ; W. Chow ; B. Kilian ; L. T. Quintais ; J. A. Guerra-Assuncao ; Y. Zhou ; Y. Gu ; J. Yen ; J. H. Vogel ; T. Eyre ; S. Redmond ; R. Banerjee ; J. Chi ; B. Fu ; E. Langley ; S. F. Maguire ; G. K. Laird ; D. Lloyd ; E. Kenyon ; S. Donaldson ; H. Sehra ; J. Almeida-King ; J. Loveland ; S. Trevanion ; M. Jones ; M. Quail ; D. Willey ; A. Hunt ; J. Burton ; S. Sims ; K. McLay ; B. Plumb ; J. Davis ; C. Clee ; K. Oliver ; R. Clark ; C. Riddle ; D. Elliot ; G. Threadgold ; G. Harden ; D. Ware ; S. Begum ; B. Mortimore ; G. Kerry ; P. Heath ; B. Phillimore ; A. Tracey ; N. Corby ; M. Dunn ; C. Johnson ; J. Wood ; S. Clark ; S. Pelan ; G. Griffiths ; M. Smith ; R. Glithero ; P. Howden ; N. Barker ; C. Lloyd ; C. Stevens ; J. Harley ; K. Holt ; G. Panagiotidis ; J. Lovell ; H. Beasley ; C. Henderson ; D. Gordon ; K. Auger ; D. Wright ; J. Collins ; C. Raisen ; L. Dyer ; K. Leung ; L. Robertson ; K. Ambridge ; D. Leongamornlert ; S. McGuire ; R. Gilderthorp ; C. Griffiths ; D. Manthravadi ; S. Nichol ; G. Barker ; S. Whitehead ; M. Kay ; J. Brown ; C. Murnane ; E. Gray ; M. Humphries ; N. Sycamore ; D. Barker ; D. Saunders ; J. Wallis ; A. Babbage ; S. Hammond ; M. Mashreghi-Mohammadi ; L. Barr ; S. Martin ; P. Wray ; A. Ellington ; N. Matthews ; M. Ellwood ; R. Woodmansey ; G. Clark ; J. Cooper ; A. Tromans ; D. Grafham ; C. Skuce ; R. Pandian ; R. Andrews ; E. Harrison ; A. Kimberley ; J. Garnett ; N. Fosker ; R. Hall ; P. Garner ; D. Kelly ; C. Bird ; S. Palmer ; I. Gehring ; A. Berger ; C. M. Dooley ; Z. Ersan-Urun ; C. Eser ; H. Geiger ; M. Geisler ; L. Karotki ; A. Kirn ; J. Konantz ; M. Konantz ; M. Oberlander ; S. Rudolph-Geiger ; M. Teucke ; C. Lanz ; G. Raddatz ; K. Osoegawa ; B. Zhu ; A. Rapp ; S. Widaa ; C. Langford ; F. Yang ; S. C. Schuster ; N. P. Carter ; J. Harrow ; Z. Ning ; J. Herrero ; S. M. Searle ; A. Enright ; R. Geisler ; R. H. Plasterk ; C. Lee ; M. Westerfield ; P. J. de Jong ; L. I. Zon ; J. H. Postlethwait ; C. Nusslein-Volhard ; T. J. Hubbard ; H. Roest Crollius ; J. Rogers ; D. L. Stemple
Nature Publishing Group (NPG)
Published 2013Staff ViewPublication Date: 2013-04-19Publisher: Nature Publishing Group (NPG)Print ISSN: 0028-0836Electronic ISSN: 1476-4687Topics: BiologyChemistry and PharmacologyMedicineNatural Sciences in GeneralPhysicsKeywords: Animals ; Chromosomes/genetics ; Conserved Sequence/*genetics ; Evolution, Molecular ; Female ; Genes/genetics ; Genome/*genetics ; Genome, Human/genetics ; Genomics ; Humans ; Male ; Meiosis/genetics ; Molecular Sequence Annotation ; Pseudogenes/genetics ; Reference Standards ; Sex Determination Processes/genetics ; Zebrafish/*genetics ; Zebrafish Proteins/geneticsPublished by: -
3Staff View
ISSN: 1751-908XSource: Blackwell Publishing Journal Backfiles 1879-2005Topics: GeosciencesNotes: Instrumental neutron activation analysis (INAA) was used for the determination of 25 elements (most of them in trace quantities) in six Bulgarian geostandards: Monzonite BV, Gabbro GV, Dolomite DM, Porphiry Copper Ore MrA, Fire Clay OgG and Lead-Zinc Sulphide Ore OZrO. Analyses were made independently in two laboratories and compared with available data.Type of Medium: Electronic ResourceURL: -
4Staff View
ISSN: 1476-4687Source: Nature Archives 1869 - 2009Topics: BiologyChemistry and PharmacologyMedicineNatural Sciences in GeneralPhysicsNotes: [Auszug] From the area of Wolkersdorf, Lower Austria, one young male and one adult female hedgehog were taken. These animals showed the phenotype of the sub-species E. euro-paeus roumamcus Barr -Ham. 1900 (white coloured chest2 3) The modal diploid number of these animals was equally 48 Karyotype analyses, ...Type of Medium: Electronic ResourceURL: -
5Staff View
ISSN: 0022-2836Keywords: E"1-E"2-type ATPase ; Synechocystis sp. PCC 6803 ; amino acid sequence ; cyanobacteria ; cytoplasmic membraneSource: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002Topics: BiologyType of Medium: Electronic ResourceURL: -
6Staff View
ISSN: 1432-1904Source: Springer Online Journal Archives 1860-2000Topics: BiologyChemistry and PharmacologyNatural Sciences in GeneralType of Medium: Electronic ResourceURL: -
7Bastert, G. ; Schmidt-Matthiesen, H. ; Fortmeyer, H. P. ; Nord, D. ; Michel, R. T. ; Sturm, R. ; Gerner, R. ; Geisler, M.
Springer
Published 1977Staff ViewISSN: 1432-0711Source: Springer Online Journal Archives 1860-2000Topics: MedicineType of Medium: Electronic ResourceURL: -
8Staff View
ISSN: 0030-4018Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002Topics: PhysicsType of Medium: Electronic ResourceURL: -
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ISSN: 1432-1203Source: Springer Online Journal Archives 1860-2000Topics: BiologyMedicineNotes: Summary Three spontaneous abortions with trisomy 2 were analyzed histologically. In one of these, beside chorionic membranes and villi, yolk sac, yolk stalk, body stalk and an embryo are described. Concerning the developmental stage there seems to be an order: villi and body stalk (16 days), embryo (end of 3rd week to beginning of 4th week) and yolk sac with yolk stalk (2nd half of 4th week).Type of Medium: Electronic ResourceURL: -
10Staff View
ISSN: 1432-1203Source: Springer Online Journal Archives 1860-2000Topics: BiologyMedicineNotes: Summary In a study of spontaneous abortions the correlations between karyotype (166 cases), anamnestic data, and macroscopic and histologic findings in placentas (107 cases) and embryos (73 cases) were analyzed. The main results were: 1. The rate of chromosomal aberrations was 39%. Trisomies predominated (60%), followed by monosomy X (20%), triploidies (14%), and structural aberrations (6%). 2. In trisomies a clear prevalence of female sex constitution (2:1) was observed. In normal karyotypes a slight prevalence of females was seen (1.2:1). 3. With increasing maternal age, more trisomies were found in the abortions. 4. Women whose index abortion had a normal karyotype had a history of fewer births but more abortions. 5. Trisomies of acrocentric chromosomes were mainly chorionic sacs with an embryo, while trisomies of the other autosomes resulted in intact empty sacs. 6. The average developmental stage of the embryos was 5 weeks, with a mean gestational age of 14 weeks. Gross malformations were found in 58% of the embryos.Type of Medium: Electronic ResourceURL: -
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ISSN: 1432-1203Source: Springer Online Journal Archives 1860-2000Topics: BiologyMedicineType of Medium: Electronic ResourceURL: -
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ISSN: 1432-1203Source: Springer Online Journal Archives 1860-2000Topics: BiologyMedicineDescription / Table of Contents: Zusammenfassung Es werden die histologischen Befunde an 4 triploiden Spätaborten (14.–21. Woche post menstruationem) beschrieben. Es handelt sich um 3 Triploidien (zweimal 69,XXY und einmal 69,XXX) und 1 Mosaik 46,XX/69,XXY (1:1). An allen 4 Placenten ergaben sich typische degenerative hydatidiforme Veränderungen bei einem Entwicklungsstand von 21–31 Tagen post ovulationem (p.o.). In 2 Fällen waren Embryonen vorhanden, die Mißbildungen im Bereich des ZNS und der caudalen Regionen aufwiesen. Der Entwicklungsstand der Embryonen wurde nach äußerlichen Merkmalen mit 28–30 Tagen p.o. bestimmt. Die histologische Analyse deckte einen Differenzierungsstand von 5–51/2 Wochen p.o. auf.Notes: Summary 4 triploid abortions with an gestational age of 14–21 weeks were analyzed histologically. 3 of them showed true triploidies (two 69,XXY, one 69,XXX), whereas 1 was a mosaic 46,XX/69,XXY (1:1). Hydatidiform degeneration was found in all the placentae. Normal development had been stopped at an ovulational age of 21–31 days. 2 embryos were found and analyzed histologically. They were malformed, mainly in the CNS and in the caudal region. Development of the external features had been stopped at 28–30 days, while histological analysis revealed, that the developmental arrest of the organs occurred at an ovulational age of 5 and 5 1/2 weeks.Type of Medium: Electronic ResourceURL: -
13Schinzel, A. ; Schmid, W. ; Auf der Maur, P. ; Moser, H. ; Degenhardt, K. H. ; Geisler, M. ; Grubisic, A.
Springer
Published 1981Staff ViewISSN: 1432-1203Source: Springer Online Journal Archives 1860-2000Topics: BiologyMedicineNotes: Summary A syndrome due to 3:1 meiotic segregation of balanced 11/22 translocation is defined from nine personally observed patients and 22 cases from the literature with apparently the same aberration. Frequent findings include a characteristic face with deepset eyes, flat nose, prominent upper lip, receding mandible and preauricular pits or tags, male genital hypoplasia, anal atresia or other anomalies of the anus, cleft palate, and congenital heart defect. Less frequent are severe reduction of the auricles, an additional pair of ribs, and hypoplasia of the diaphragm. Perinatal mortality is high. Growth is usually and psychomotor development is invariably and severely delayed. Balanced 11/22 translocations are apparently disproportionally frequent; as the balanced rearrangement is not easy to detect, it is important to be aware of it at the family investigation of cases with extra chromosomes similar to a No.22 or 22q-.The unbalanced products are most probably trisomic for both a segment of 22 (22q-) and a distal segment of 11q; the exact determination of the breakpoints is not possible at present due to the similar banding characteristics of the two segments involved in the translocation.Type of Medium: Electronic ResourceURL: -
14Staff View
ISSN: 1432-2048Keywords: Key words:Arabidopsis (mutants) ; Cell differentiation ; Epidermis ; Mutant (Arabidopsis ; stoma) ; Stoma (development ; patterning)Source: Springer Online Journal Archives 1860-2000Topics: BiologyNotes: Abstract. Stomata are consistently patterned so that they are not in contact. This patterning is violated in the too many mouths (tmm) and four lips (flp) mutations of Arabidopsis thaliana (L.) Heynh. which have stomatal clusters in the first-formed leaves. To clarify the function of both genes in stomatal initiation and patterning, the phenotypes of many different organs were quantified. The flp mutation affects dorsiventral and cylindrical organs differentially with respect to the frequency of clustering. The tmm mutation has a more complex region-specific phenotype in that some regions lack stomata entirely, other regions have excess stomata, and the flower stalk exhibits an apex-to-base gradient from excess to no stomata. This suggests that TMM represents an unusual type of gene regulating plant cell development in that it can either influence stomatal initiation in a positive or negative fashion depending on region. Since the frequencies of initiation and clustering can be uncoupled in tmm, these two functions are under separate region-specific control. Analysis of double mutants shows that tmm and flp in some cases show region-specific interactions in both cluster formation and initiation, and that there may be subpopulations of stomata under different genetic control.Type of Medium: Electronic ResourceURL: -
15Geisler, M. ; Bender, S. W. ; Mohrmann, Ch. ; Svejcar, J. ; Degenhardt, K.-H. ; Hoevels, O.
Springer
Published 1972Staff ViewISSN: 1432-1076Keywords: Cystic Fibrosis (Mucoviscidosis) ; Heterozygote Test ; White Blood Cell Culture ; MetachromasiaSource: Springer Online Journal Archives 1860-2000Topics: MedicineDescription / Table of Contents: Zusammenfassung Es wird über eine modifizierte Kultivierungsmethode weißer Blutzellen berichtet. In transformierten Leukocyten wurde Metachromasie bei Patienten mit Mucoviscidose und heterozygoten Erbträgern nachgewiesen. Da auch bei anderen selteneren angeborenen Stoffwechselstörungen Metachromasie nachgewiesen werden kann, ist der Heterozygotennachweis nur bei Familien mit bekanntem Genstatus anwendbar.Notes: Abstract A modified method of white blood cell culturing is described. Metachromasia could be demonstrated in transformed leucocytes of probands homozygotic for cystic fibrosis (CF) and heterozygote carriers of the CF-gene. Since these staining properties are known to occur in other inherited metabolic diseases heterozygote detecting should be restricted to CF-families and not applied in the general population as a screening test.Type of Medium: Electronic ResourceURL: -
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ISSN: 1432-0886Source: Springer Online Journal Archives 1860-2000Topics: BiologyMedicineDescription / Table of Contents: Zusammenfassung Die Vermutung, daß die Insektivoren in besonderem Maße Strukturvariationen der Chromosomen im Prozeß der Evolution der Arten widerspiegeln, war Ausgangspunkt dieser Arbeit. Die Chromosomenuntersuchungen bei Erinaceus europaeus (Westigel) und E. roumanicus (Ostigel) sowie bei Hemiechinus auritus und H. megalous zeigten, daß alle vier Formen die gleiche Chromosomenzahl von 48 besitzen. H. auritus und H. megalotis haben einen identischen Karyotyp und das gleiche DNS-Replikationsmuster. Der Befund kann als Beleg für die Annahme gelten, daß beide einer gemeinsamen Art zugehören und H. megalotis nur eine Großform von H. auritus darstellt. Beide Arten der europäischen Igel (Erinaceus) besitzen, anders als Hemiechinus, große, spät replizierende und in der Meiose heteropyknotische Segmente, die als autosomales Heterochromatin aufgefaßt werden. Die sehr auffälligen Unterschiede der Karyotypen betreffen überwiegend diese heterochromatischen Segmente des Genoms, die möglicherweise besonders günstige Voraussetzungen für strukturelle Umschichtungen im Laufe der Evolution boten. Vermutlich stellt das autosomale Heterochromatin einen genetisch inaktiven Anteil des Chromosomenkomplements dar. Seine Umlagerung im Laufe der Evolution ließ in cytologischer Hinsicht grobe Variationen des Genoms zu, ohne daß der genetisch aktive euchromatische Bestandteil des Genoms in gleichem Ausmaße betroffen wurde. Die beiden europäischen Igelarten sind dafür ein deutliches Beispiel.Notes: Abstract The chromosome variations found in the two European forms of Erinaceus have been studied by the use of 3H-Thymidine autoradiography in karyotype analyses and of meiotic preparations. The observations in Erinaceus are compared with the results of two forms of Hemiechinus. — The Western and the Eastern European hedgehogs (Erinaceus) have 48 chromosomes. Marked karyotypic differences corroborate the view that they represent different species, i.e. E. europaeus and E. roumanicus. Both possess large amounts of late labelling autosomal heterochromatin which corresponds to heteropyknotic non-pairing segments in meiosis and to large chromocenters in the interphase nuclei. — Obviously, the prominent variations of the chromosomes in E. europaeus and E. roumanicus concern the heterochromatic autosomal segments which probably represent genetically inactivated material. It is proposed that the gross karyotypic differences result from translocations, and possibly pericentric inversions, of heterochromatin and, therefore, are of lesser genetic importance. The genetically more effective changes in speciation, however, must mainly be caused by minor rearrangements or gene mutations. — H. auritus and H. megalotis have identical karyotypes (also with 48 chromosomes) and similar DNA-replication patterns. Larger heterochromatic segments are absent from mitotic and meiotic chromosomes. The lack of karyotype differences is in line with biometric data leading to consider H. megalotis as a subspecies of H. auritus. — It is conceivable that heterochromatinization as cytologic mechanism of karyotype evolution is not restricted to the European hedgehogs (Erinaceus). Other mammalian species displaying similar features must, however, be found in order to prove a more general importance of this principle.Type of Medium: Electronic ResourceURL: -
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ISSN: 1588-2780Source: Springer Online Journal Archives 1860-2000Topics: Chemistry and PharmacologyEnergy, Environment Protection, Nuclear Power EngineeringNotes: Abstract Dy content has been determined by INAA in the Bulgarian standard rocks BV, GV, DM, MrA, OgG, OZnO and in the IAEA standard reference materials SL-1, SOIL-5, and SOIL-7. Results are compared with Dy values obtained by interpolation of the chondrite-normalized contents of other REE in these samples.Type of Medium: Electronic ResourceURL: -
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ISSN: 1588-2780Source: Springer Online Journal Archives 1860-2000Topics: Chemistry and PharmacologyEnergy, Environment Protection, Nuclear Power EngineeringNotes: Abstract IAEA standard reference material SOIL-7 has been analyzed by both instrumental NAA and radiochemical NAA using epithermal neutron activation. These analyses confirm the NAA value of Ag in the intercomparison SOIL-7 which disagrees with some AAS values. Further geostandards were included and compared with literature data.Type of Medium: Electronic ResourceURL: -
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ISSN: 1434-6079Keywords: PACS. 33.80.-b Photon interactions with molecules - 39.30.+w Spectroscopic techniques - 31.70.Hq Time-dependent phenomena: excitation and relaxation processes, and reaction rates - 82.50.Fv Photolysis, photodissociation, and photoionization by infrared, visible, and ultraviolet radiationSource: Springer Online Journal Archives 1860-2000Topics: PhysicsNotes: Abstract: Kinetic energy time-of-flight (KETOF) mass spectroscopy in combination with femtosecond pump-probe and molecular beam techniques is used to map molecular dynamics along an internuclear coordinate. By recording transient KETOF mass spectra we monitor the vibrational wave-packet motion on a neutral electronic state for all possible internuclear distances simultaneously. The power of this method is demonstrated by the one dimensional wave-packet motion on the double minimum state of the sodium dimer. For comparison with the experiment quantum mechanical simulations were performed.Type of Medium: Electronic ResourceURL: -
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ISSN: 1588-2780Source: Springer Online Journal Archives 1860-2000Topics: Chemistry and PharmacologyEnergy, Environment Protection, Nuclear Power EngineeringNotes: Abstract A very convenient method for yield determination in NAA is the use of isotopic radiotracers. But for the majority of elements determinable by NAA no suitable isotopic radiotracers exist. For some of these elements the radioreagent methodoffers afvourable opportunity to use also non-isotopic radiotracers. An activation analytical copper determination method is described using a radioactively labelled reagent for correction of separation losses. Results of copper determinations in 8 international standard reference materials are given.Type of Medium: Electronic ResourceURL: