Document Details

Document Type : Thesis 
Document Title :
Phenotypic Characterization of Some Aerobic Spore- Forming Bacterial Isolates
التوصيف المظهري لبعض العزلات البكتيرية الهوائية المكونة للجراثيم
 
Subject : Biological 
Document Language : Arabic 
Abstract : Ten isolates of aerobic endospore- forming moderately halophilic bacteria were isolated from a saline habitat at the west coastal region near Jeddah. The isolates showing different colony morphology, rod – shaped, Gram positive and catalase positive were chosen for this taxonomical study. All isolates were mesophilic, neutralophilic, with temperature range of growth between 20 and 40° C and pH range of growth between 7 and 9 pH. Classifying the isolates according to the routine phenotypic tests, resulted first in separating them into two distinct groups, those which grow also under anaerobic conditions ( 5- 13 – 19 ), and those which were strictly aerobic ( 7- 8- 11- 12- 14- 16 - 17). Further classification of these groups according to the other characteristics, and using the newest taxonomical key for identification of this group of bacteria, resulted in identifying one isolate (no. 5) as Paenibacillus dendritiformis, two isolates (no. 7-8) as Bacillus oleronius , two isolates (no. 13-19) as P. alvei , three other isolates (no. 11-12-17) are specified to belong to the B. subtilis – B. atrophaeus group, and other two isolates (no. 14-16) are possibly new strains, with no match with either of the species named in the key. An additional two aerobic endospore-forming cocci isolated from salt-march soil in Germany were tested for their taxonomical status as well. It was found that these isolates belong to the species Halobacillus halophilus. Chemotaxonomic characteristics represented by cell wall analysis and fatty acid prophiles of some selected isolates displayed nearly same results. Type strains of B. megaterium ( DSMZ 90) and H. halophilus (DSMZ 2266) were used in this study for confirmation of the results. 
Supervisor : Dr. Fatemah Ali Fahmi 
Thesis Type : Master Thesis 
Publishing Year : 1427 AH
2006 AD 
Number Of Pages : 180 
Co-Supervisor : Dr. Sahirah Ahmed Lary 
Added Date : Tuesday, June 10, 2008 

Researchers

Researcher Name (Arabic)Researcher Name (English)Researcher TypeDr GradeEmail
ناهده محمد الشمريAlShammari, Naheda MohammedResearcherMasternmalshammari@Kau.edu.sa

Files

File NameTypeDescription
 24006.pdf pdfالمستخلص
 24007.pdf pdfAbstract

Download This Page

Back To Researches Page