401
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Kahl G, Rosenstock G, Lange H. [Morphogenetic separation of cell division and suberin biosynthesis in potato tuber tissue by tris-(hydroxymethyl)-aminomethane]. PLANTA 1969; 87:365-371. [PMID: 24504785 DOI: 10.1007/bf00388321] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/09/1969] [Indexed: 06/03/2023]
Abstract
Differential derepression of the genome of potato tuber cells by slicing of the tuber tissue leads to cell divisions. This mitotic activity is totally suppressed by Tris-(hydroxymethyl)-aminomethane (Tris)-buffer widely used in biochemical research. The blockage is reversible if tissue slices are transferred to water in order to wash out the Tris-ions.The actual reason for the inhibition of mitotic activity by Tris is as yet unknown. As a possible mechanism of action an uncoupling of electron transfer from phosphorylation in the mitochondrial respiratory chain is discussed. However, experiments show no difference in O2-absorption between Tris-treated tissue and control in water. Moreover the application of several inhibitors of respiration causes exactly the same effects in both tissues. Amytal (blockage of flavoproteids) has no influence on the respiratory rate at any time. Antimycin A (blockage of electron flow from cytochrome b to cytochrome c) as well as HCN (inhibition of cytochrome-oxidase) inhibit respiration of both tissues during the first 24 hours after derepression. Later on the respiration becomes resistant to both inhibitors. So the quality of respiration is assumed to be the same in mitotic active potato slices as in the Tris-treated tissue.Recent results of biochemical analyses of events in carbohydrate breakdown of the tissues in question point to a differential effect of Tris on several enzymes as possible reason for its inhibitory action.
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402
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Lange H, Gossmann HH, Seybold D, Vogt O, Pfab R, Dombrowski H. [Toxic hypercalcemia and reversible soft tissue calcification in the polyuric phase after acute kidney failure]. Dtsch Med Wochenschr 1969; 94:2155-6 passim. [PMID: 5821489 DOI: 10.1055/s-0028-1110407] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
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403
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Kahl G, Lange H, Rosenstock G. [Substrate levels, enzymatic activities and genetic regulation after derepression in plant storage tissues]. ZEITSCHRIFT FUR NATURFORSCHUNG. TEIL B, CHEMIE, BIOCHEMIE, BIOPHYSIK, BIOLOGIE UND VERWANDTE GEBIETE 1969; 24:911-8. [PMID: 4390048 DOI: 10.1515/znb-1969-0721] [Citation(s) in RCA: 22] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
Differential derepression of the genome of potato tuber cells can be initiated by slicing the tissue into disks. The consequence of this procedure on the cells of the wound surface is dedifferentiation and cell division followed by redifferentiation to a suberized phellem cell. The drift of glucose-, glucose-1-phosphate-, glucose-6-phosphate-, fructose-6-phosphate- and 6-phospho-gluconatelevels has been determined in the derepressed tissue. With the exception of 6-phospho-gluconate all intermediates so far investigated showed a rise in concentration after derepression.
This is interpreted as a consequence of altered enzymic activities which were estimated for phosphoglucomutase, hexokinase, phosphoglucoisomerase, gluco-6-phosphate- and 6-phosphogluconatedehydrogenase. The two dehydrogenases were activated after derepression, the activation represented a de-novo-synthesis, as was demonstrated with the inhibitors Actidione (translation) and p-Fluorophenyl-alanine (protein synthesis in general). Hexokinase and phosphoglucoisomerase were not severely affected by cutting the tissue. Phosphoglucomutase was degrated rapidly, the degradation being dependent on protein synthesis. The importance of an enhanced activity of the pentose phosphate shunt for the stressed cell is emphasized and the possibility of an alteration in the osmotic pressure within the cell and especially in the nucleus — a primary consequence of wounding — as a cause of derepression in potato tuber cells is discussed.
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404
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Englhardt A, Schmidt-Sodingen G, Lange H. Metabolitgehalt und Enzympermeabilität isolierter menschlicher Blutzellen bei Substratmangel und Zusatz von Stoffwechselgiften. ACTA ACUST UNITED AC 1969. [DOI: 10.1159/000458320] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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405
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Lange H, Dölle W. [Regulation of diuresis in the early polyuric phase following acute kidney failure]. KLINISCHE WOCHENSCHRIFT 1969; 47:420-3. [PMID: 5383652 DOI: 10.1007/bf01745786] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
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406
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Glogner P, Lange H, Pfab R. [Tolbutamide metabolism in kidney failure]. DIE MEDIZINISCHE WELT 1968; 52:2876-8. [PMID: 5716333] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
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407
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408
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Krupp H, Walter G, Kling W, Lange H. Adhesion of small gold particles to solid substrates immersed in water and in aqueous solutions of surfactants and of alkaline salts. J Colloid Interface Sci 1968. [DOI: 10.1016/0021-9797(68)90221-x] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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409
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Mohr H, Huault C, Lange H, Lohmann L, Rissland I, Weidner M. Lag-phases in phytochrome-mediated enzyme synthesis (PAL). PLANTA 1968; 83:267-275. [PMID: 24519214 DOI: 10.1007/bf00385336] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/14/1968] [Indexed: 06/03/2023]
Abstract
In experiments with the mustard seedling (Sinapis alba L.) it was confirmed that in the case of "secondary irradiation" induction of PAL by phytochrome is a very rapid process. The lag-phase after the onset of light is too brief to be detected. However, the data of other investigators, who found extended "secondary" lag-phases in their experimental material, can be imitated with the mustard seedling. We explain why these investigators were not able to eliminate the "secondary" lag-phase.
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410
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Steiner AM, Lange H. Interaction between hydroxyproline and phytochrome controlling hypocotylelongation in mustard seedlings (Sinapis alba L). THE SCIENCE OF NATURE - NATURWISSENSCHAFTEN 1968; 55:187-8. [PMID: 5704171 DOI: 10.1007/bf00591038] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
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411
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Lange H, Steiner AM. Interaction between hydroxyproline inhibition and phytochrome dependent accumulation of anthocyanin in mustard seedlings (Sinapis alba L). THE SCIENCE OF NATURE - NATURWISSENSCHAFTEN 1968; 55:188. [PMID: 5709298 DOI: 10.1007/bf00591039] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
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412
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Lange H, Miller B. ["Payquil convulsions" as a differential diagnosis in organic brain seizures in the terminal state of chronic kidney insufficiency]. MEDIZINISCHE KLINIK 1968; 63:12-4. [PMID: 5668744] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
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413
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414
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Huhold K, Lange H. [Practical experience with the P. Rommel pregnancy test with mares]. MONATSHEFTE FUR VETERINARMEDIZIN 1967; 22:968-72. [PMID: 5627992] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
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415
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Lange H, Bienger I, Mohr H. [New evidence in favour of the hypothesis of differential gene activation by phytochrome 730]. PLANTA 1967; 76:359-366. [PMID: 24549499 DOI: 10.1007/bf00387541] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/15/1967] [Indexed: 06/03/2023]
Abstract
Phytochrome-mediated anthocyanin synthesis of the mustard seedling (Sinapis alba L.) can be regarded as a prototype of a "positive" photoresponse. "Positive" photoresponses are those which are characterized by an initiation or an increase of biosynthetic or growth processes. The initial lag-phase of this type of photoresponse is relatively long. In the case of anthocyanin synthesis of the mustard seedling it takes about 3 hours after the initial formation of P730, the active phytochrome, until anthocyanin synthesis can be measured (Fig.). This period of time has been called initial (or primary) lag-phase.In earlier papers (e.g. LANGE and MOHR, 1965; MOHR, 1966a, b; SCHOPFER, 1967) we have advanced and supported the hypothesis that the positive photoresponses (in the above sense) of the mustard seedling can be explained by a differential gene activation through P730. Those genes of which the activity can be started or increased by P730 have been called potentially active genes (P730).In order to verify this hypothesis further we have been trying to characterize the processes which occur during the initial lag-phase after the onset of continuous far-red light. There is good evidence (HARTMANN, 1966; CLARKSON and HILLMAN, 1967) that under continuous far-red a low but virtually stationary concentration of the active P730 can be maintained in the seedling's tissues over a period of many hours. Consequently we are dealing with steady state conditions of P730 when we investigate the process of anthocyanin accumulation under continuous far-red.In the present paper we present data which indicate that P730 exerts two functions during the initial lag-phase. First, it eliminates a barrier before the potentially active genes insolfar as it makes these genes accessible for the activating action of P730. Secondly, P730 starts the activity of potentially active genes. To maintain gene activity the continuous presence of P730 is required. On the other hand, it a gene has once been "opened" to the action of P730 it remains easily accessible for the activating action of P730 even in the case when P730 disappeared and gene activity ceased for an extended period of time. After the re-appearance of P730 the gene can be activated almost immediately. These conclusions have been derived from the following facts. 1. The initial lag-phase after the onset of far-red is always in the order of 3 hours (Fig.). If, however, a seedling which was preirradiated with 12 hours of far-red is kept in darkness for an extended period and is then re-irradiated with far-red no lag-phase for the action of the second irradiation can be found even when anthocyanin synthesis had already ceased during the preceding dark period (Fig.).
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416
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Lange H, Dölle W, Baltzer G, Miller B. [Prognosis of acute kidney failure. Clinical experience report (July 1964-October 1966)]. MUNCHENER MEDIZINISCHE WOCHENSCHRIFT (1950) 1967; 109:1406-10. [PMID: 5631532] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
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417
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Lange H, Gossmann HH. Metastatic calcification during peritoneal dialysis for terminal chronic glomerulonephritis. GERMAN MEDICAL MONTHLY 1967; 12:220-2. [PMID: 6047330] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
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418
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Lange H, Gossmann HH. [Metastatic calcification during peritoneal dialysis in the terminal stage of chronic glomerulonephritis]. Dtsch Med Wochenschr 1967; 92:296-300. [PMID: 6019062 DOI: 10.1055/s-0028-1103617] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
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419
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420
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Gürakar M, Lange H. [Investigations of the clinical and biological effects of combined arginine and malic acid in provoked hyperammonemia]. TURK TIP CEMIYETI MECMUASI 1966; 32:173-81. [PMID: 5943163] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
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421
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Ühlein E, Volke J, König KH, Gleu K, Bergmann H, Kratochvíl P, Groth W, Best E, Buschbeck KC, Lange H, Amrhein EM, Heyns K, Asinger F, Eisenmann W, Sippel A, Dornow A, Brügel W, Becke M, Schermann W, Gruner E, Hähnel R, Pfeiffer HH, Schäfer K, Bergmann H, Best S, Ühlein E, Walcher W. Buchbesprechungen. Colloid Polym Sci 1965. [DOI: 10.1007/bf01500392] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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422
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Schermann W, Eisenmann W, Zimmermann H, Gleu K, Gruner E, Pfeiffer HH, Asinger F, Schulz RC, Beck W, Sippel A, Wintergerst S, Lange H, Klumb H, Bauer L. Buchbesprechungen. Colloid Polym Sci 1965. [DOI: 10.1007/bf01497108] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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423
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424
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Lange H. Bevorzugte Solvatation von Polystyrol in binären Lösungsmitteln. Angew Chem Int Ed Engl 1964. [DOI: 10.1002/ange.19640760134] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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425
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Lange H. Bevorzugte Solvatation von Polystyrol in binären Lösungsmitteln. Angew Chem Int Ed Engl 1964. [DOI: 10.1002/ange.19640760132] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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