What's the difference between ;__ and ;g__ in Greengene database?

[SoilRotifer (Mike Robeson)]

Hi @Ryuk,

If you search the forum you'll find many existing solutions to this question. Here are a couple:

Faulty taxonomic assignment?

Hello Looking at the .csv file exported (genera level) from the taxonomy barplot I got confused: a lot of the taxa are not classified down to genus level, which I understand, but then same taxa classified only to a certain level, let’s say class level, appear twice - e.g. k__Bacteria;p__Proteobacteria;c__Alphaproteobacteria; __ ; __ ; __ and k__Bacteria;p__Proteobacteria;c__Alphaproteobacteria;o__;f__;g__ And this appears in several instances. Why is that? I am trying to produce a filtered ba…

OTU taxonomic asssignment

Hello All, Can someone remind me the meaning and difference again between different OTUs assigned like the following: k__Bacteria; p__Actinobacteria; c__Actinobacteria; o__Bifidobacteriales; f__Bifidobacteriaceae k__Bacteria; p__Actinobacteria; c__Actinobacteria; o__Bifidobacteriales; f__Bifidobacteriaceae; g__; s__ k__Bacteria; p__Bacteroidetes; c__Bacteroidia; o__Bacteroidales; f__Bacteroidaceae; g__Bacteroides k__Bacteria; p__Bacteroidetes; c__Bacteroidia; o__Bacteroidales; f__Bacteroida…

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-Good luck!