just to inform you that each bacterial strain has ID in its preservation bank as ATCC 31532.When it becomes isolated and identified, it called by this number worldwidely. this number clarify your efforts and other efforts upon the similar strain in each species and genus which the similar strain isolated from elsewhere has different growth condition rather than all member in this sp. but the similar strain has similar ID has the similar behavior

there are diffirent bacterial resources worldwidly like ATCC www.atcc.org/ and DSMZ www.dsmz.de/. each one has diffirent ID for the similar bacterial strain

When u submit a gene to GenBank and u get an accession no. i.e ur gene can be universally found in a database by that no. Same microbial cultures are designated some accession no. The criteria laid are many i.e the strain is a direct isolation or it is a derivative from other cultures. @Ahmed Barakat said right that its an approach for easy access and retrieval info about that strain.

You r right

Bacteria strain passport means that all the characteristics and properties of the bacteria has been identified and then classified as Biosafety Class 1, or 2, 3 or 4. Examples:

1. Characteristics: coccus, rod, spiral, etc; flagellated or non-flagellate

Staining: Gram-positive or negative; or other staining methods

2. Biochemical reactions

3. Antimicrobial activitry

4. Presewnce of Resistant genes or plasmids

5. Opportunistic or pathogenic and diseases caused.

6. Mode of spread

7. etc.

The classification of the bacteria will indicate its handling, lab facilities and storage. Please look up at the ATCC recommendations. Bacteria of Biosafety 3 and 4 cannot be handled by anyone or work done in any lab, except in P3 and P4 lab. Only trained personnel in P3 and P4 lab are allowed to handle such bacteria.

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This is the strain code given to this bacterium by the authors