Bacteria 1+意思

The plus sign (+) after a bacterial strain name typically indicates that the bacterium has been genetically modified or engineered in some way. It is used to distinguish between the original, unmodified bacterium and a laboratory-created variant. For example, if a scientist were to create a new strain of E. coli that produces a certain protein, they might name it "E. coli 1+" to indicate that it is a modified version of the original E. coli strain 1.

The plus sign is often used in this context to signify an improvement or a new trait that the bacterium possesses as a result of the genetic modification. For instance, a bacterium might be engineered to produce more biofuels, to be more resistant to antibiotics, or to have some other useful characteristic. In such cases, the plus sign is a way to quickly communicate that the bacterium is not wild type (the natural, unmodified form).

It's important to note that the specific meaning of the plus sign can vary depending on the context and the laboratory or organization that is using it. In some cases, it may simply indicate a positive trait without specifying what that trait is. Always check the specific documentation or the context of the name to understand the precise meaning.