Re: [DIYbio] first report or new disease

We need more detail on what you mean.

But, assuming you're asking something like "I found an actinomycete, how
do I know if it's already discovered or a new species?", then:

Categorising bacteria into species is a bit tricky. That's because,
basically, species are a human idea to try and make sense of the world,
but really there is no such thing.

So, what defines one bacteria as being distinct from another? Whether or
not most scientists agree that it's meaningfully different and merits a
new name.

These days, DNA sequencing tends to be the accepted standard; if you can
show that the genomes of two bacteria differ significantly, then you
have grounds to declare a new species. You then try to assert that this
species belongs somewhere in a phylogenetic tree by analysing accepted
"standard" genes that are believed to mutate at fairly predictable rates
and comparing their sequences to suspected close relatives.

That's pretty much it. It's arbitrary voodoo. :)

On 18/02/15 14:54, hayman awla wrote:
> how can I know my Actinomycete its first report? any way to check in?
>
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