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Autolysis of Thermoactinomyces vulgaris spores lacking carbon dioxide during germination. 普通热放线菌孢子萌发过程中缺乏二氧化碳的自溶。
Zeitschrift fur allgemeine Mikrobiologie Pub Date : 1983-01-01 DOI: 10.1002/jobm.3630230105
S Kretschmer, H E Jacob
{"title":"Autolysis of Thermoactinomyces vulgaris spores lacking carbon dioxide during germination.","authors":"S Kretschmer,&nbsp;H E Jacob","doi":"10.1002/jobm.3630230105","DOIUrl":"https://doi.org/10.1002/jobm.3630230105","url":null,"abstract":"<p><p>Ultrathin sections of early germinating endospores of Thermoactinomyces vulgaris were studied by electron microscope. Only spores aerated with an air-CO2 mixture (5% CO2) grow out, while spores aerated with air (0.03% CO2) lyse by the 25th min of inoculation. The lysis is due to progressive, unlimited degradation of the spore integuments and a lack of cell wall formation around the spore protoplast. The requirement of CO2 for outgrowth could not be replaced by oxaloacetate. CO2 seems to be needed to energize the dormant cytoplasmic membrane of the spore to render it capable of initiating active transport processes and of synthesizing the germ cell wall.</p>","PeriodicalId":23874,"journal":{"name":"Zeitschrift fur allgemeine Mikrobiologie","volume":"23 1","pages":"27-32"},"PeriodicalIF":0.0,"publicationDate":"1983-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"17468357","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
[Effector influence of oxygen-containing C1 compounds in the cultivation of the methanotrophic bacterial strain GB 25]. [含氧C1化合物对甲烷营养菌株gb25培养的效应影响]。
Zeitschrift fur allgemeine Mikrobiologie Pub Date : 1983-01-01 DOI: 10.1002/jobm.3630230407
J D Schneider, K D Wendlandt, E Brühl, G Mirschel
{"title":"[Effector influence of oxygen-containing C1 compounds in the cultivation of the methanotrophic bacterial strain GB 25].","authors":"J D Schneider,&nbsp;K D Wendlandt,&nbsp;E Brühl,&nbsp;G Mirschel","doi":"10.1002/jobm.3630230407","DOIUrl":"https://doi.org/10.1002/jobm.3630230407","url":null,"abstract":"<p><p>Addition of oxygen-containing C1-compounds to chemostat cultures of GB 25 increases both the yield of biomass and the specific growth rate. At optimum concentrations the catalytic activity of these compounds increases with increasing growth rates. Their influence on maintenance coefficients and maximum yield coefficients decreases in the order CH3OH greater than CO2 greater than HCOOH greater than HCHO. This result together with spectrophotometric NADH determinations suggests that the NADH pool determines the balance between the assimilatory and oxidative utilization of formaldehyde.</p>","PeriodicalId":23874,"journal":{"name":"Zeitschrift fur allgemeine Mikrobiologie","volume":"23 4","pages":"259-68"},"PeriodicalIF":0.0,"publicationDate":"1983-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"17472738","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
[Effects of 5-bromouracil and 5-bromodeoxyuridine in combination with 8-aza-adenine on the UV sensitivity of bacteria]. [5-溴嘧啶和5-溴脱氧尿嘧啶联合8-氮杂腺嘌呤对细菌紫外线敏感性的影响]。
Zeitschrift fur allgemeine Mikrobiologie Pub Date : 1983-01-01 DOI: 10.1002/jobm.3630230807
H E Jacob, E Golovinsky
{"title":"[Effects of 5-bromouracil and 5-bromodeoxyuridine in combination with 8-aza-adenine on the UV sensitivity of bacteria].","authors":"H E Jacob,&nbsp;E Golovinsky","doi":"10.1002/jobm.3630230807","DOIUrl":"https://doi.org/10.1002/jobm.3630230807","url":null,"abstract":"<p><p>The presence of 5-bromouracil (BU) as well as 5-bromo-2-deoxyuridine (BUdR) in the cultivation media of bacteria results in the distinct increase of UV sensitivity. With the nucleic acid base analogue 8-azaadenine (8-AA) a similar effect was confirmed, however, not so pronounced. In the experiments reported here the combined action of BU or BUdR and 8-AA on Escherichia coli, Proteus mirabilis, Bacillus subtilis and Bacillus cereus was investigated. The sensitization effect of BUdR does not increase if 8-AA is present additionally during cultivation. On the contrary, a decrease of sensibilization occurs. This result may be caused by the protective effect of the adenine derivative against UV irradiation, if it is present in the cell, but not incorporated into the DNA.</p>","PeriodicalId":23874,"journal":{"name":"Zeitschrift fur allgemeine Mikrobiologie","volume":"23 8","pages":"495-501"},"PeriodicalIF":0.0,"publicationDate":"1983-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"17478162","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
[Regulation of glyoxylate cycle enzymes in Saccharomycopsis lipolytica. I. Effect of the carbon source on isocitrate lyase and malate synthase activity]. 脂肪糖酵母菌中乙醛酸循环酶的调控。碳源对异柠檬酸裂解酶和苹果酸合成酶活性的影响[j]。
Zeitschrift fur allgemeine Mikrobiologie Pub Date : 1983-01-01 DOI: 10.1002/jobm.3630230304
I Hönes
{"title":"[Regulation of glyoxylate cycle enzymes in Saccharomycopsis lipolytica. I. Effect of the carbon source on isocitrate lyase and malate synthase activity].","authors":"I Hönes","doi":"10.1002/jobm.3630230304","DOIUrl":"https://doi.org/10.1002/jobm.3630230304","url":null,"abstract":"<p><p>Comparative studies on the activities of isocitrate lyase (ICL) and malate synthase (MS) were carried out with Saccharomycopsis lipolytica incubating the yeast on media with different carbon sources. When cells were incubated in minimal medium with glucose, the activities of both enzymes were very low. In contrast, in minimal medium with acetate enhanced enzyme activities could be demonstrated. It is probably that the synthesis of ICL is repressed in presence of glucose. Furthermore the activity of ICL was inhibited by tricarboxylic acid cycle intermediates like succinic acid and oxalacetic acid. It was concluded that the syntheses of enzymes are derepressed. When cells of Sm. lipolytica were incubated in minimal medium with acetate, a high enzyme activity is evident. Synthesis of ICL on acetate was inhibited by cycloheximide and actinomycin D. The results were discussed comparing them with data obtained from other organisms.</p>","PeriodicalId":23874,"journal":{"name":"Zeitschrift fur allgemeine Mikrobiologie","volume":"23 3","pages":"163-71"},"PeriodicalIF":0.0,"publicationDate":"1983-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"17929718","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 6
[Gene-enzyme relationships of the arom aggregate of Schizosaccharomyces pombe]. [裂糖酵母芳香聚集体的基因-酶关系]。
Zeitschrift fur allgemeine Mikrobiologie Pub Date : 1983-01-01 DOI: 10.1002/jobm.3630230403
R Bode
{"title":"[Gene-enzyme relationships of the arom aggregate of Schizosaccharomyces pombe].","authors":"R Bode","doi":"10.1002/jobm.3630230403","DOIUrl":"https://doi.org/10.1002/jobm.3630230403","url":null,"abstract":"<p><p>The gene-enzyme relationships of the arom multienzyme complex of Schizosaccharomyces pombe that catalyzes steps two through six in the prechorismate polyaromatic amino acid biosynthetic pathway have been studied. The various mutants were subjected to biochemical analysis by direct enzymic assays. These studies have established that aro-3A, aro-3B, aro-3C, aro-3D, and aro-3E mutants lack, respectively, the enzymic activities 5-dehydroquinate synthase, 5-dehydroquinase, shekimate kinase, 3-enolpyruvylshikimate 5-phosphate synthase, and shikimate: NADP oxidoreductase. In S. pombe lack enzymic activities for the inducible quinate catabolic pathway. The functional significance of the arom aggregate is discussed.</p>","PeriodicalId":23874,"journal":{"name":"Zeitschrift fur allgemeine Mikrobiologie","volume":"23 4","pages":"219-24"},"PeriodicalIF":0.0,"publicationDate":"1983-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"17668140","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 2
[Protoplast liberation and regeneration in the ascomycete Hypomyces ochraceus (Pers.) Tul]. 子囊菌Hypomyces ochraceus (Pers.)原生质体的释放与再生图)。
Zeitschrift fur allgemeine Mikrobiologie Pub Date : 1983-01-01 DOI: 10.1002/jobm.3630230406
K H Riemay, S Ellrich, R Tröger
{"title":"[Protoplast liberation and regeneration in the ascomycete Hypomyces ochraceus (Pers.) Tul].","authors":"K H Riemay,&nbsp;S Ellrich,&nbsp;R Tröger","doi":"10.1002/jobm.3630230406","DOIUrl":"https://doi.org/10.1002/jobm.3630230406","url":null,"abstract":"<p><p>A rapid and convenient method for producing protoplasts from 3 d old mycelium of the ascomycete Hypomyces ochraceus is described. The procedure involves a Helix pomatia enzyme preparation and sucrose (20%) for stabilization. Pretreatment with disulfide bond reducing agents reduced the amount of viable protoplasts. Formation of protoplasts and different stages of regeneration were observed by phase contrast microscopy. There was only one type of true regeneration from protoplasts to hyphae in 15-30% gelatine medium by direct forming a germ tube from the original protoplast. Cytological events and physiological conditions are discussed.</p>","PeriodicalId":23874,"journal":{"name":"Zeitschrift fur allgemeine Mikrobiologie","volume":"23 4","pages":"247-57"},"PeriodicalIF":0.0,"publicationDate":"1983-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"17668143","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
[Secondary metabolites as endogenous effectors of microbial cytodifferentiation]. [次生代谢物作为微生物细胞分化的内源性效应物]。
Zeitschrift fur allgemeine Mikrobiologie Pub Date : 1983-01-01 DOI: 10.1002/jobm.3630230507
U Gräfe
{"title":"[Secondary metabolites as endogenous effectors of microbial cytodifferentiation].","authors":"U Gräfe","doi":"10.1002/jobm.3630230507","DOIUrl":"https://doi.org/10.1002/jobm.3630230507","url":null,"abstract":"<p><p>The present survey covers the regulatory role of microbial secondary metabolites and related compounds as endogenous signals of cell differentiation of the producing organisms. Several antibiotics have been shown to exert autoregulatory effects on differentiation-associated functions. The mechanisms of self-protection of the producing cells against the autotoxicity of secondary metabolites are discussed in terms of an integral part of the modulation of signal strength. As a further topic, the review deals with the hormone-like interference of particular metabolites with differentiating cells. Conclusive discussion concerns the potential use of microbial signal molecules either as tools for directed manipulations of product syntheses or as pharmaceutics.</p>","PeriodicalId":23874,"journal":{"name":"Zeitschrift fur allgemeine Mikrobiologie","volume":"23 5","pages":"319-43"},"PeriodicalIF":0.0,"publicationDate":"1983-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"17679167","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 8
[Effect of phosphate on the biosynthesis of tentoxin by Alternaria alternata (Fr.) Keissler]. [磷对交替稻霉(alternnaria alternata, Fr.) Keissler)生物合成tentoxin的影响]。
Zeitschrift fur allgemeine Mikrobiologie Pub Date : 1983-01-01 DOI: 10.1002/jobm.3630230905
B Brückner, I Hänel, F Hänel, R Tröger
{"title":"[Effect of phosphate on the biosynthesis of tentoxin by Alternaria alternata (Fr.) Keissler].","authors":"B Brückner,&nbsp;I Hänel,&nbsp;F Hänel,&nbsp;R Tröger","doi":"10.1002/jobm.3630230905","DOIUrl":"https://doi.org/10.1002/jobm.3630230905","url":null,"abstract":"<p><p>Alternaria alternata (Fr.) Keissler produces a phytotoxic substance tentoxin. The influence of inorganic phosphate on the formation of this secondary metabolite was analyzed. Distinct phases of growth and metabolite formation can be defined. The first phase shows exponential growth, high QO2, protein and nucleic acid values and a rapid uptake of inorganic phosphate from the medium. The second phase shows linear growth and active tentoxin formation takes place. The highest yields of tentoxin are obtained, when inorganic phosphate in the medium was limited. The phosphate level also influences the ATP-pool of the mycelium. The role of ATP as an effector in phosphate mediated control of tentoxin synthesis was discussed.</p>","PeriodicalId":23874,"journal":{"name":"Zeitschrift fur allgemeine Mikrobiologie","volume":"23 9","pages":"549-56"},"PeriodicalIF":0.0,"publicationDate":"1983-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"17741085","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 7
A novel MN2+-oxidizing enzyme system in a freshwater bacterium. 淡水细菌中一种新的MN2+氧化酶系统。
Zeitschrift fur allgemeine Mikrobiologie Pub Date : 1983-01-01
J Zindulis, H L Ehrlich
{"title":"A novel MN2+-oxidizing enzyme system in a freshwater bacterium.","authors":"J Zindulis,&nbsp;H L Ehrlich","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>Manganese oxidation by cell suspensions and cell extracts of a freshwater bacterium, designated strain FMn 1, was investigated. Manganese appeared to be oxidized in the periplasmic space. A conventional, membrane-bound-electron transport system was not utilized. An enzyme or enzyme complex and a cofactor, each of different molecular size, were located in different parts of the cell envelope. Results suggest that the cofactor reacts with manganese in the periplasmic space and that in the presence of oxygen it is reoxidized by the enzyme. The enzyme is probably loosely bound to the membrane. A combination of enzyme and cofactor in a crude preparation exhibited a pH optimum at around 7.0. The enzyme exhibited a temperature optimum at around 30 degrees C. No temperature optimum was found for the cofactor. The enzyme was heat-stable and could oxidize manganese under anaerobic conditions. The enzyme system appears to be different from others so far described.</p>","PeriodicalId":23874,"journal":{"name":"Zeitschrift fur allgemeine Mikrobiologie","volume":"23 7","pages":"457-65"},"PeriodicalIF":0.0,"publicationDate":"1983-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"17691991","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Effects of different factors on the sporulation of Pithophora oedogonia (Mont.) Wittrock. 不同因素对木参产孢的影响Wittrock。
Zeitschrift fur allgemeine Mikrobiologie Pub Date : 1983-01-01 DOI: 10.1002/jobm.3630230602
S C Agrawal, Y S Sarma
{"title":"Effects of different factors on the sporulation of Pithophora oedogonia (Mont.) Wittrock.","authors":"S C Agrawal,&nbsp;Y S Sarma","doi":"10.1002/jobm.3630230602","DOIUrl":"https://doi.org/10.1002/jobm.3630230602","url":null,"abstract":"<p><p>The present study emphasizes the effects of different qualities of visible light, intensities of white light, temperature and pH on the sporulation in the green alga Pithophora oedogonia (Mont.) Wittrock. Of the different qualities of light used, green light was found to delay the initiation of sporulation. Percentage of sporulation was greatly decreased in yellow light followed by red light. Delay in time taken for initiation of sporulation and decrease in percentage sporulation were observed at 0.25 and 0.5 K lux intensity of white light. Sporulation upto the extent of its natural population was achieved with white light between 2 to 3.5 K lux, temperature between 20 to 30 degrees C and pH between 4-9.</p>","PeriodicalId":23874,"journal":{"name":"Zeitschrift fur allgemeine Mikrobiologie","volume":"23 6","pages":"347-50"},"PeriodicalIF":0.0,"publicationDate":"1983-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"17692029","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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