Zentralblatt fur Mikrobiologie最新文献_第8页

Terrestrial fungi inhabiting certain species of nile fishes in Egypt 生活在埃及某些尼罗河鱼类体内的陆生真菌

Zentralblatt fur Mikrobiologie Pub Date : 1993-06-01 DOI: 10.1016/S0232-4393(11)80106-X

M.M.K. Bagy , S.K. Hemida , U.M. Mahmoud

{"title":"Terrestrial fungi inhabiting certain species of nile fishes in Egypt","authors":"M.M.K. Bagy , S.K. Hemida , U.M. Mahmoud","doi":"10.1016/S0232-4393(11)80106-X","DOIUrl":"10.1016/S0232-4393(11)80106-X","url":null,"abstract":"<div>Twenty specimens of six species of Nile fishes were examined for the presence of fungi. Of which 2 were from Alestes nurse; 3 from Bagrus docmac; 4 from Barbus bynni; 6 from Chrysichthys auratus; 4 from Lates niloticus and 1 from Malapterurus electricus. Forty-three fungal species in addition to 1 variety appertaining to fifteen genera were recovered from skin (15 genera and 34 species + 1 variety); gills, kidney (12 genera and 30 species + 1 variety, each); liver (11 genera and 30 species + 1 variety) and intestine (13 genera and 30 species + 1 variety) of all specimens, using glucose Czapek-Dox medium at 28°C. The most common genera were Aspergillus, Penicillium and Trichoderma.</div><div>20 Exemplare aus 6 Fischarten des Nils wurden auf Pilzvorkommen untersucht. (Fischarten: Alestes nurse, Bagrus docmac, Barbus bynni, Chrysichthys auratus, Lates niloticus, Malapterurus electricus.) Dabei wurden 43 Pilzarten, die 15 Gattungen angehörten, von der Haut, aus den Kiemen, den Nieren, der Leber und dem Darmtrakt isoliert. Hierbei wurde die Isolation mit Glucose Czapek-Dox Medium bei 28°C vorgenommen. Die verbreitetsten Gattungen waren Aspergillus, Penicillium und Trichoderma.</div>","PeriodicalId":77473,"journal":{"name":"Zentralblatt fur Mikrobiologie","volume":"148 4","pages":"Pages 289-297"},"PeriodicalIF":0.0,"publicationDate":"1993-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/S0232-4393(11)80106-X","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81967465","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

Response of soil fungi to the herbicide primextra 土壤真菌对除草剂引物的响应

Zentralblatt fur Mikrobiologie Pub Date : 1993-06-01 DOI: 10.1016/S0232-4393(11)80107-1

M.M.K. Bagy , S.K. Hemida

{"title":"Response of soil fungi to the herbicide primextra","authors":"M.M.K. Bagy , S.K. Hemida","doi":"10.1016/S0232-4393(11)80107-1","DOIUrl":"10.1016/S0232-4393(11)80107-1","url":null,"abstract":"<div>Primextra 500 FW (acetanilide and triazine combination) was significantly toxic to the total counts of soil fungi after 2, 5 and 60 days of application with the three doses (0.94, 1.88 and 4.70 mg a.i/kg). In the agar medium, it was significantly inhibited the total counts of the fungi, Aspergillus and A. niger; and promoted the counts of A. Candidus and A. carneus. The mycelial growth of A. niger, A. terreus, A. fumigatus and Trichoderma harzianum was significantly raised by the high dose (390 p.p.m.).</div><div>Primextra 500 FW (Acetanilid/Triazin-Kombination) war signifikant toxisch gegenüber Bodenpilzen (Gesamtkeimzahl), 2, 5 und 60 Tage nach seiner Applikation in 3 Konzentrationsdosen (0,94, 1,88 und 4,76 mg/kg Boden). Im Agarmedium wird die „Gesamtkeimzahl” der Pilze Aspergillus und A. niger gehemmt, während die Zahl von A. Candidus und A. carneus erhöht wird. Das Myzelwachstum von A. niger, A. terreus, A. fumigatus und Trichoderma harzianum wird durch die hohe Dosis (390 ppm) signifikant erhöht.</div>","PeriodicalId":77473,"journal":{"name":"Zentralblatt fur Mikrobiologie","volume":"148 4","pages":"Pages 298-303"},"PeriodicalIF":0.0,"publicationDate":"1993-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/S0232-4393(11)80107-1","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"56537985","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: 4

Whey as a growth medium for two spp. of Azospirillum grown in batch culture 乳清作为两种氮螺旋菌分批培养的培养基

Zentralblatt fur Mikrobiologie Pub Date : 1993-06-01 DOI: 10.1016/S0232-4393(11)80105-8

M.N.A. Omar , O. Berge , S.A. El-Sayed , J. Balandreau

{"title":"Whey as a growth medium for two spp. of Azospirillum grown in batch culture","authors":"M.N.A. Omar , O. Berge , S.A. El-Sayed , J. Balandreau","doi":"10.1016/S0232-4393(11)80105-8","DOIUrl":"10.1016/S0232-4393(11)80105-8","url":null,"abstract":"<div>The growth curves of Azospirillum lipoferum 4B and Azospirillum brasilense NO 40 grown on raw whey, deproteinized whey and malate media were investigated in batch culture. A maximal cell density of 14 × 108 and 4.5 × 108 cell/ml were attained after 72 h of the growth of Azospirillum brasilense NO40 and Azospirillum lipoferum 4B on deproteinized whey medium respectively. Raw whey as well as deproteinized whey was successfully utilized by both strains in a similar manner to that of malate. The highest growth of A. lipoferum 4B and A. brasilense NO40 was detected when 20 ml/l of raw whey or deproteinized whey were used as a carbon source in the basal medium. Prospective economic balance for the capital cost of malate and whey or deproteinized whey growth media was also discussed.</div><div>Es wurden die Wachstumskurven von Azospirillum lipoferum 4B und Azospirillum brasilense NO 40 bei der Batch-Kultivierung in roher Molke, deproteinisierter Molke und einem Malat-Medium ermittelt. Eine maximale Zelldichte pro ml von 14 × 108 bei A. brasilense NO40 und von 4,5 × 108 bei A. lipoferum 4B wurde im deproteinisierten Medium nach jeweils 72 h Kultivierungszeit erreicht. Sowohl rohe als auch deproteinisierte Molke wurde durch beide Stämme erfolgreich genutzt — in ähnlicher Weise wie Malat. Die höchste Wachstumsrate von A. lipoferum 4B und A. brasilense NO40 wurde erreicht, wenn 20 ml/l roher bzw. deproteinisierter Molke dem Basalmedium als C-Quelle zugesetzt wurden. Ökonomische Bilanzierungen der Kapitalkosten für Malat und Molke bzw. deproteinisierter Molke als Wachstumsmedium wurden perspektivisch diskutiert.</div>","PeriodicalId":77473,"journal":{"name":"Zentralblatt fur Mikrobiologie","volume":"148 4","pages":"Pages 284-288"},"PeriodicalIF":0.0,"publicationDate":"1993-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/S0232-4393(11)80105-8","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"56537549","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

Production of B-group vitamins by Azospirillum spp. grown in media of different pH at different temperatures. 氮螺旋藻在不同pH、不同温度培养基中产生b族维生素的研究。

Zentralblatt fur Mikrobiologie Pub Date : 1993-04-01

H Dahm, H Rózycki, E Strzelczyk, C Y Li

引用次数: 0

Effects of cadmium and mercury on growth and differentiation of Trichoderma viride. 镉和汞对绿木霉生长和分化的影响。

Zentralblatt fur Mikrobiologie Pub Date : 1993-04-01

V Frank, G Támová, L Takácsová

引用次数: 0

Investigation of the ability of toxin production among Salmonella strains of bovine origin 牛源沙门氏菌产毒能力的研究

Zentralblatt fur Mikrobiologie Pub Date : 1993-03-01 DOI: 10.1016/S0232-4393(11)80111-3

U. Dinjus , G. Steinbach , U. Methner , I. Hänel , P.-U. Schulze , P. Schweinitz

{"title":"Investigation of the ability of toxin production among Salmonella strains of bovine origin","authors":"U. Dinjus , G. Steinbach , U. Methner , I. Hänel , P.-U. Schulze , P. Schweinitz","doi":"10.1016/S0232-4393(11)80111-3","DOIUrl":"10.1016/S0232-4393(11)80111-3","url":null,"abstract":"<div>Cell-free supernatants of 40 Salmonella strains of different serovars were tested for the existence of enterotoxic substances in the rabbit skin permeability factor test, rabbit ileal loop test, tissue culture assays (CHO K1, RTG-2), and baby mouse test.There were differences in the test results between the strains even within the same serovar. Correlation coefficients between the results of different toxin tests were low.It is therefore improbable that the “enterotoxic activity” of Salmonella is caused by only one toxic substance. The activities revealed in the different test systems could not be related to virulence or the epizootiological behaviour of the strains. The in vitro occurrence of the virulence factor “enterotoxin production” is lower for Salmonella than for E. coli and V. cholerae.</div><div>Die Sterilfiltrate von 40 Salmonellastämmen 7 verschiedener Serovaren wurden im Hauptpermeabilitätstest, in Zellkulturtesten (CHO K1, RTG-2) und im Babymaustest auf das Vorhandensein von enterotoxisch wirkenden Substanzen geprüft. Die Stämme wurden aus bovinem Untersuchungsmaterial isoliert.Bezüglich der geprüften Parameter in den verschiedenen Testsystemen konnten deutliche Unterschiede zwischen den Stämmen, auch der gleichen Serovaren, nachgewiesen werden. Die mit den verschiedenen Toxintesten bestimmten Werte ergaben in der Korrelationsanalyse nur niedrige Korrelationskoeffizienten. Es ist daher unwahrscheinlich, daß die von den Salmonellen ausgelösten „Enterotoxinaktivitäten“ auf eine einzige toxische Substanz zurückzuführen sind. Eine Zuordnung der nachgewiesenen Toxinaktivitäten zur Virulenz und dem epizootiologischen Verhalten der Stämme gelang nicht. Die Ausbildung des Virulenzfaktors Enterotoxinbildung ist in vitro bei Salmonellen geringer ausgeprägt als bei E. coli und V. cholerae.</div>","PeriodicalId":77473,"journal":{"name":"Zentralblatt fur Mikrobiologie","volume":"148 2","pages":"Pages 95-102"},"PeriodicalIF":0.0,"publicationDate":"1993-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/S0232-4393(11)80111-3","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"19463254","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: 1

Sensitivity of plant-associated lactic acid bacteria to antibiotics and mycotoxins 植物相关乳酸菌对抗生素和真菌毒素的敏感性

Zentralblatt fur Mikrobiologie Pub Date : 1993-03-01 DOI: 10.1016/S0232-4393(11)80112-5

Thomas Müller , Grit Seyfarth

{"title":"Sensitivity of plant-associated lactic acid bacteria to antibiotics and mycotoxins","authors":"Thomas Müller , Grit Seyfarth","doi":"10.1016/S0232-4393(11)80112-5","DOIUrl":"10.1016/S0232-4393(11)80112-5","url":null,"abstract":"<div>A total of 68 strains of lactid acid bacteria (LAB) isolated from meadow grass were studied for sensitivity or resistance to 10 different antibiotics and 11 mycotoxins. Almost all strains were highly sensitive to actinomycin C, chloramphenicol, erythromycin, Oxytetracycline and penicillin G, had low sensitivity to bacitracin, but were resistant to gramicidin, streptomycin, D-cycloserine, polymyxin B and to mycotoxins produced by moulds of the genera Alternaria, Fusarium, Penicillium and Aspergillus. The occurrence of microorganisms producing the compounds with antagonistic effects and the probability of influencing the development of an epiphytic LAB population on the herbage are discussed.</div><div>Es wurden 68 von Futtergräsern isolierte Milchsäurebakterien-(MSB-)Stämme hinsichtlich ihrer Reaktion gegenüber 10 verschiedenen Antibiotika und 11 Mykotoxinen untersucht. Fast alle Stämme reagierten mit hoher Empfindlichkeit auf Actinomycin C., Chloramphenicol, Erythromycin, Oxytetracyclin und Penicillin G, waren schwach empfindlich gegenüber Bacitracin und resistent gegenüber Gramicidin, Streptomycin, D-Cycloserin sowie Polymyxin B. Das Wachstum der MSB wurde durch keines der eingesetzten Mykotoxine von Schimmelpilzen der Gattungen Alternaria, Fusarium, Penicillium und Aspergillus gehemmt. Ein möglicher Einfluß der antagonistischen Substanzen auf die Entwicklung einer epiphytischen MSB-Population auf Gräsern wird diskutiert.</div>","PeriodicalId":77473,"journal":{"name":"Zentralblatt fur Mikrobiologie","volume":"148 2","pages":"Pages 103-108"},"PeriodicalIF":0.0,"publicationDate":"1993-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/S0232-4393(11)80112-5","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"56538262","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: 3

Production and some properties of fibrinolytic enzymes from Fusarium oxysporum N.R.C.1 尖孢镰刀菌(Fusarium oxysporum N.R.C.1)纤溶酶的产生及一些特性

Zentralblatt fur Mikrobiologie Pub Date : 1993-03-01 DOI: 10.1016/S0232-4393(11)80114-9

Ahmed F. Abdel-Fattah , Abdel-Mohsen S. Ismail , Soad A. Saleh

引用次数: 1

Purification and properties of two fibrinolytic enzymes from Fusarium oxysporum N.R.C.1 尖孢镰刀菌N.R.C.1中两种纤溶酶的纯化及性质研究

Zentralblatt fur Mikrobiologie Pub Date : 1993-03-01 DOI: 10.1016/S0232-4393(11)80115-0

Ahmed F. Abdel-Fattah , Abdel-Mohsen S. Ismail , Soad A. Saleh

{"title":"Purification and properties of two fibrinolytic enzymes from Fusarium oxysporum N.R.C.1","authors":"Ahmed F. Abdel-Fattah , Abdel-Mohsen S. Ismail , Soad A. Saleh","doi":"10.1016/S0232-4393(11)80115-0","DOIUrl":"10.1016/S0232-4393(11)80115-0","url":null,"abstract":"<div>The crude fibrinolytic enzyme preparation from Fusarium oxysporum N.R.C.1 was purified into two enzymes by ammonium sulphate precipitation followed by chromatography on Sephadex G-100 and DEAE-cellulose. Both fibrinolytic enzymes were more active on human than on bovine fibrin. The activity of the “major” enzyme component on human fibrin was 72-fold that of the “minor” enzyme component. Both enzymes had the same temperature (37 °C) and pH (6.98) optima. The “minor” enzyme component was more stable than the “major” one against heat and pH treatments. Both enzymes were significantly activated with Co2+ and inhibited with EDTA.</div><div>Das fibrinolytische Rohenzympräparat aus Fusarium oxysporum N.R.C.1 wurde durch Ammoniumsulfat-Fällung und nachfolgender Chromatografie an Sephadex G-100 und DEAE-Cellulose gereinigt, wobei zwei fibrinolytisch aktive Enzyme auftraten. Beide Enzyme waren gegenüber menschlichem Fibrin aktiver als gegenüber bovinem. Die „größere“ Enzymkomponente war gegenüber Humanfibrin 72fach aktiver als die „kleinere“ Komponente. Beide Enzyme hatten gleiche Temperatur (37 °C) und pH- (6.98) Optima. Die kleinere Komponente bewies eine höhere Stabilität gegenüber Hitze und pH-Behandlungen. Beide wurden durch Co2+-Ionen aktiviert und durch EDTA gehemmt.</div>","PeriodicalId":77473,"journal":{"name":"Zentralblatt fur Mikrobiologie","volume":"148 2","pages":"Pages 123-128"},"PeriodicalIF":0.0,"publicationDate":"1993-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/S0232-4393(11)80115-0","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"19462597","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

An improved selective medium for the isolation of fluorescent pseudomonads 分离荧光假单胞菌的一种改进的选择性培养基

Zentralblatt fur Mikrobiologie Pub Date : 1993-03-01 DOI: 10.1016/S0232-4393(11)80110-1

M. Wölk , S. Sarkar

引用次数: 7