2 edition of morphological and physiological study of two aerobic thermophilic endospore forming bacteria. found in the catalog.
morphological and physiological study of two aerobic thermophilic endospore forming bacteria.
Chatterjee, S. K.
Written in English
|Contributions||Manchester Polytechnic. Department of Biological Sciences.|
This endospore forming bacterium is an obligate thermophile which grows between 35°C to 67°C with an optimal growth temperature of 55°C. It can grow in a wide range of pH (–). The optimal growth pH is in a slightly acidic range (–) (Derekova et al. ). Compared to the extensive literature on the physiology, biochemistry, and ecology of the aerobic red halophilic archaea (family Halobacteriaceae), the aerobic halophilic bacteria have been relatively little ch on the halophilic and halotolerant bacteria often seems to be less glamorous than the study of the archaea, with their unique adaptations, including a highly saline.
1. Int J Food Microbiol. Jul 15;(2) doi: /micro Epub Apr Thermophilic spore-forming bacteria isolated from spoiled canned food . THERMOPHILIC SPORE-FORMING BACTERIA AEROBIC THERMOPHILIC SPORES ⎯ continued 2. For sugars and syrups only (boiling method) Aseptically weigh 20 g of sugar into a sterile 80 mL water blank and homogenize. Rapidly bring the solution to a boil and continue boiling for 5 mins. (Note 3). After boiling replace the evaporated water with sterile diluent.
This chapter provides a review of current ideas concerning the systematics of the aerobic endospore-forming bacteria and shows how an appreciation of their classification and identification makes possible for a better understanding of their ecology. The DNA base composition of thermoactinomycete species is around 50 to 54% G+C, which is much lower than the 60% or more found in the true. • second deepest branch of Bacteria • contains one class, one order, and six genera - best studied genus is Thermotoga • gram-negative rods - have outer sheath-like envelope that can balloon out from ends of cell • thermophiles - optimum 80°C; maximum 90°C - marine hydrothermal vents .
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Terrestrial hot environments are important resources for isolation of thermophilic microorganisms. Few studies have been made on microbial diversity of Algerian geothermal sites. This paper reports the diversity of thermophilic, aerobic endospore-forming bacteria from water and sediment samples taken from Hammam Ouled Ali and Hammam Debagh, two hot springs with a wide Cited by: 2.
This paper reports the diversity of thermophilic, aerobic endospore-forming bacteria from water and sediment samples taken from Hammam Ouled Ali and Hammam Debagh, two hot springs with a wide.
Thermophilic aerobic endospore-forming bacteria are widely distributed in water, soil, and many other environments and it is not uncommon to isolate them from mesophilic environments (Logan and.
Endospore-Forming Bacteria: an Overview, Page 1 of 2 The classical and strict distinction between aerobic (Bacillus, Thermoactinomyces divide medially.
After the final medial septation at the entry into stationary phase, the two chromosomes of the cell form an axial filament structure (photo 2). Septation occurs near one pole of the Cited by: Among these strains, following morphological, biochemical and genetic analysis, Anoxybacillus gonensis was found to be a novel sporulating, rod-shaped, thermophilic bacterium (with an optimum.
Sixty-two strains of thermophilic aerobic endospore-forming bacteria were subjected to polyphasic taxonomic study including 16S rRNA gene sequence analysis, polar lipid and fatty acid analysis.
Three obligate aerobic and one facultative anaerobic spore-forming thermophilic strains were isolated from a hot-spring in Koba, Japan, and Lake Bogoria, Kenia, respectively. The main biochemical, morphological and physiological characteristics of these strains and those of related thermophilic Bacillus species are presented in Table 1.
Heyndrickx M () Dispersal of aerobic endospore-forming bacteria from soil and agricultural activities to food and feed.
In: Logan NA, De Vos P (eds) Endospore forming soil bacteria (Soil Biology 27). Springer, Heidelberg, doi: / A moderately thermophilic, slightly halophilic, aerobic, Gram-stain negative, bacterial strain, SLM16, was isolated from a mixed of seawater–sand-sediment sample collected from a coastal fumarole located in Whalers Bay, Deception Island, Antarctica.
The aim was to screen for thermophilic microorganisms able to degrade primary amines and search for amine transaminase activity for potential. Endospore-forming bacteria were long classified into two orders: Bacillales for aerobic rods and Clostridiales for strictly anaerobic bacteria, with Bacillus and Clostridium as representative genera, respectively.
The evolution of molecular tools, and particularly 16S-based molecular classification of bacterial species, has led to. The study of comparative morphology helps to ascertain the evolutionary origin of different organisms. Functional morphology is the study of structure-function relation of various organs within a organism.
Experimental morphology studies the effect of external factors or experimental conditions on the form and shape of an organ. White D, Sharp RJ, Priest FG. A polyphasic taxonomic study of thermophilic bacilli from a wide geographical area. Antonie van Leeuwenhoek. ; – doi: /BF Zarilla K, Perry JJ.
Bacillus thermoleovorans sp. nov., a species of obligately thermophilic hydrocarbon utilizing endospore-forming bacteria. However, the identification of this transposon in spore-forming bacteria did not provide any information on the heat resistance levels. Nevertheless, the results of this study could be helpful in screening bacterial strains having the potential to form highly heat resistant spores.
Spoilage potential of aerobic spore-forming bacteria As a result of the morphological analysis of the isolates obtained in parallel with the literature data, all test strains were Gram and endospore (except E.
profundum) positive, motile and had bacilli cell morphology except E. faecium (coccus). Growth ranges for pH, temperature and salt concentration were pH, °C and %(w/v). The aerobic endospore-forming bacteria are traditionally placed in the genus Bacillus.
Over the past three decades, this genus has expanded to accommodate more than species. Analysis of 16S ribosomal RNA sequences from numerous Bacillus species indicated that the genus Bacillus should be divided into at least five genera or rRNA groups.
Thermophilic Bacteria is a comprehensive volume that describes all major bacterial groups that can grow above °C (excluding the Archaea).
Over 60 different species of aerobic and anaerobic thermophilic bacteria are covered. Isolation, growth methods, characterization and identification, ecology, metabolism, and enzymology of thermophilic bacteria are examined in detail, and an 3/5(1).
The isolates are obligate thermophilic bacilli which are endospore forming, aerobic, staining gram negatively, gram variable or gram negatively. In terms of their physiological features, all the isolates grow optimally under conditions at 65 °C, pH 6 and % NaCl concentrations.
First, OTUs had to be affiliated with the phylum Firmicutes, to which all known endospore-forming bacteria belong. Second, each OTU had to significantly increase in relative abundance in at least. This phylum, uniting similar bacteria as determined by morphological, physiological, and 16S rRNA criteria, includes the coryneform bacteria and filamentous actinobacteria.
The coryneforms are unicellular, Gram-positive organisms, straight or slightly curved rods with a tendency to form. Brian W. McBride, Peter C.B. Turnbull, in Encyclopedia of Immunology (Second Edition), Description and distribution of the genus. The family Bacillaceae comprises the rod-shaped bacteria which form endospores.
The two principal subdivisions are the anaerobic spore-forming bacilli of the genus Clostridium and the aerobic or facultatively anaerobic endospore formers constituting the.
Aerobic spores forming in thermophilic bacteria growing at 70 °C were initially identified in by Miquel . Thermophilic microorganisms play a key role C. Morphological, Physiological and Biochemical are endospore forming, mobile, rod-shaped and can.A thermophile is an organism—a type of extremophile—that thrives at relatively high temperatures, between 41 and °C ( and °F).
Many thermophiles are philic eubacteria are suggested to have been among the earliest bacteria. Thermophiles are found in various geothermally heated regions of the Earth, such as hot springs like those in Yellowstone National Park (see.Morphology.
All of the isolated strains were Gram‐positive, rod‐shaped, catalase and oxidase positive, and endospore‐forming bacteria. The positions of the spores in the cells were subterminal or terminal. Physiological properties.
All of the isolates grew at 45 and 65°C, at 05 and 1% (w/v) NaCl, and at pH 8.