Characteristics of Bacteriophages specific to salt tolerant Azotobacter sp. in Minia Soils. | ||||
| Minia Journal of Agricultural Research and Development | ||||
| Volume 44, Issue 4, December 2024, Page 751-763 PDF (559.85 K) | ||||
| DOI: 10.21608/mjard.2024.406993 | ||||
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| Abstract | ||||
| Five isolates of Azotobacter were isolated from different locations in Minia Governorate - Egypt and designated Az1, Az2 Az3, Az4 and Az5. Az3 was found to be most tolerant isolate to NaCl. Bacterial viruses of Azotobacter (Az3) were isolated from soil samples collected from Minia Governorate. Twelve single plaques of Azotobacter phages, were isolated. Due to the similarity of the phage isolates in their optimum pH sensitivity to UV (260 nm), thermal inactivation point and host range the phages of Azotobacter were classified into groups A and B. On the basis of electron microscope study, Azotobacter phages of every group were found to be similar in their size and morphology. Generally, the obtained results indicated that, the twelve isolates of Azotobacter phage belong to two types of phage. These two phage types were named Az 1, Az 2. | ||||
| Keywords | ||||
| Azotobacter; Bacteriophages; thermal inactivation point; host range | ||||
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