international online community for dna barcoding professionals
Mortierella exposed
Speaking of ITS sequencing of types, here's a real dynamite study: Nagy et al New Phytol, in press (http://onlinelibrary.wiley.com/doi/10.1111/j.1469-8137.2011.03707.x...)
They sequenced a truckload of Mortierella types and HQ cultures and were able to explain a whole lot of the unidentified Mortierella sequences in GenBank. And there are certainly many of those. I maintain a list (http://www.emerencia.org/genuslist.html) of the top fungal genera in INSD as represented by unidentified ITS sequences there, and Mortierella has been on the top 10 for five years or more.
Type sequences. We love those.
/ RHN
Tags: ITS, Mortierella, Type, specimens
Views: 41
Replies to This Discussion
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Permalink Reply by Conrad Schoch on -
Yes, that is good to see. Off topic, there is also a good paper by some of the same authors on evolutionary processes of fungal fruiting bodies in Systematic Biology.
Speaking of type sequences, we are finally working on including a 'type' field for future GenBank submissions.
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Permalink Reply by Arthur Schuessler on -
We are defining some epitypes for the Glomeromycota. Several types do not "exist" or material is mixed, or degraded - so these species are somehow "dead". They can be "redefined" by careful selection of epitypes, that can then also go to culture collections (unfortunately theres is no contamination-free Glomeromycota collections existing). Maybe in future people will get how important it will bevome to have such collections, or at least DNA depositories. Therfore would be helpful for the Glomeromycota to be allowed to indicate epitype sequences, in the 'type' field in GenBank.
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Permalink Reply by Conrad Schoch on
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The latest is that it was decided not to include a type modifier with GenBank accessions. The current field indicated as 'type' refers to something else, 'tissue type'.
So for now we are stuck using the notes field for this. Please consider adding your valuable epitype info as a note while we explore other possibilities to deal with this.
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