The following points highlight the seven steps for identification of bacteria isolated from a specimen. The steps are: 1. Morphology and Staining 2. Cultural Characteristics 3. Biochemical Reactions 4. Antigenic Characters 5. Typing of Bacteria: Bacteriophage Sensitivity 6. Animal Pathogen City 7. Antibiotic Sensitivity. Identification of Bacteria: Step # 1. Morphology and Staining: Serve as preliminary criteria. The Gram stained [...]
The below mentioned article provides a practical experiment to Identify Pathogenicity of Organisms. Principle: Pathogenicity is nothing but the ability of a pathogen to cause or incite diseases. The pathogenicity of any organisms could be demonstrated by a suitably designed experiment by following the principles of Koch's postulates or Koch's Rules. Requirements: 1. An infected potted plant, (viz. early blight [...]
In this article we will discuss about the Identification of Diseased Plants and Plant Parts with the help of fifteen specimens. 1. Specimen: The infected tuber and plant shoot show the following features: (a) The infected potato is characterised by warty and dirty cauliflower-like proliferations of abnormal tissue of variable size and shape. The plant shoot also is deformed particularly [...]