Isolation and characterization of Thermococcus sibiricus sp. nov. from a Western Siberia high-temperature oil reservoir

Extremophiles ◽  
2001 ◽  
Vol 5 (2) ◽  
pp. 85-91 ◽  
Author(s):  
Margarita Miroshnichenko ◽  
Hans Hippe ◽  
Erko Stackebrandt ◽  
Nadezhda Kostrikina ◽  
Nikolai Chernyh ◽  
...  
Keyword(s):  
High Temperature ◽  
Western Siberia ◽  
Oil Reservoir ◽  
Isolation And Characterization

Isolation and characterization of psychrotrophic bacteria from oil-reservoir water and oil sands

2001 ◽  
Vol 55 (6) ◽  
pp. 794-800 ◽  
Author(s):  
T. Kato ◽  
M. Haruki ◽  
T. Imanaka ◽  
M. Morikawa ◽  
S. Kanaya
Keyword(s):  
Oil Sands ◽  
Oil Reservoir ◽  
Reservoir Water ◽  
Psychrotrophic Bacteria ◽  
Isolation And Characterization

scholarly journals Isolation and Characterization of Vibrio kanaloae as a Major Pathogen Associated with Mass Mortalities of Ark Clam, Scapharca broughtonii, in Cold Season

2021 ◽  
Vol 9 (10) ◽  
pp. 2161
Author(s):  
Bowen Huang ◽  
Xiang Zhang ◽  
Chongming Wang ◽  
Changming Bai ◽  
Chen Li ◽  
...  
Keyword(s):  
High Temperature ◽  
Low Temperature ◽  
Optimal Growth ◽  
Cold Season ◽  
Opportunistic Pathogens ◽  
Growth Ratio ◽  
Isolation And Characterization ◽  
Scapharca Broughtonii ◽  
Different Temperatures

High temperature is a risk factor for vibriosis outbreaks. Most vibrios are opportunistic pathogens that cause the mortality of aquatic animals at the vibrio optimal growth temperature (~25 °C), whereas a dominant Vibrio kanaloae strain SbA1-1 is isolated from natural diseased ark clams (Scapharca broughtonii) during cold seasons in this study. Consistent symptoms and histopathological features reappeared under an immersion infection with SbA1-1 performed at 15 °C. The pathogenicity difference of SbA1-1 was assessed under different temperatures (15 °C and 25 °C). The cumulative mortality rates of ark clams were significantly higher at the low temperature (15 °C) than at the high temperature (25 °C); up to 98% on 16th day post SbA1-1 infection. While the growth ratio of SbA1-1 was retarded at the low temperature, the hemolytic activity and siderophores productivity of SbA1-1 were increased. This study constitutes the first isolation of V. kanaloae from the natural diseased ark clams (S. broughtonii) in cold seasons and the exposition of the dissimilar pathogenicity of SbA1-1 at a different temperature. All the above indicates that V. kanaloae constitutes a threat to ark clam culture, especially in cold seasons.

Isolation and Characterization of Halotolerant Aerobic Bacteria From Oil Reservoir

2012 ◽  
Author(s):  
Rosli Md. Illias ◽  
Seok Wei Ooi ◽  
Ahmad Kamal Idris ◽  
Wan Aizan Wan Abdul Rahman
Keyword(s):  
Oil Recovery ◽  
Sole Carbon Source ◽  
Morphological Characterization ◽  
Aerobic Bacteria ◽  
Oil Reservoir ◽  
Genus Bacillus ◽  
Isolation And Characterization ◽  
Tension Tests ◽  
Naci Concentration

Beberapa bakteria halotoleran telah berjaya dipencilkan daripada sampel air masin telaga minyak Semangkok di mana ujian biokimia dan morfologi telah dijalankan bagi bakteria ini. Hampir semua bakteria yang dipencilkan tergolong di dalam genus Bacillus. Sebahagian besar daripada pencilan berkeupayaan untuk hidup di dalam medium pertumbuhan yang mengandungi kerosen sebagai sumber karbon utama dan tenaga dan berkeupayaan untuk hidup di dalam medium dengan kepekatan NaCI diantara 10–15%. Ujian ketegangan antara permukaan (IFT) menunjukkan pencilan menghasilkan biosurfaktan. Enam daripada sembilan pencilan menghasilkan eksopolisakarida di dalam medium pertumbuhan yang mungkin penting di dalam MEOR. Kata kunci: Bakteria; pencirian; pengasingan; Surfaktan; Eksopolisakarida Several halotolerant bacteria were isolated from brine samples from Semangkok oil reservoir. Biochemical and morphological characterization of the bacteria were carried out. These bacteria are gram positive spore formers and have been identified as belonging to the genus Bacillus. Most of the isolates could grow in medium containing kerosene as sole carbon source and energy and tolerate NaCI concentration up to 15%. Interfacial tension and surface tension tests showed that the bacteria were capable of producing biosurfactant. Six out of nine were able to produce exopolysaccharide. We believe these isolate could be appointed as future biopolymer producer especially for microbial enhanced oil recovery (MEOR). Keywords: Bacteria; Characterization; Isolation; Surfactant; Exopolysaccharides.

scholarly journals Isolation and Characterization of High Temperature-Resistant Germination Mutants of Arabidopsis thaliana

2006 ◽  
Vol 47 (8) ◽  
pp. 1081-1094 ◽  
Author(s):  
Noriko Tamura ◽  
Takahiro Yoshida ◽  
Arata Tanaka ◽  
Ryuta Sasaki ◽  
Asuka Bando ◽  
...  
Keyword(s):  
Arabidopsis Thaliana ◽  
High Temperature ◽  
Isolation And Characterization

Isolation and characterization of high temperature tolerant mutant from the cyanobacterium Anabaena doliolum

2019 ◽  
Vol 59 (3) ◽  
pp. 314-322
Author(s):  
Yattapu P. Reddy ◽  
Ravindra K. Yadav ◽  
Keshawanand Tripathi ◽  
Gerard Abraham
Keyword(s):  
High Temperature ◽  
Anabaena Doliolum ◽  
Isolation And Characterization ◽  
Cyanobacterium Anabaena ◽  
Tolerant Mutant
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