Hi, Ecologers,

I asked about sampling air microbes several weeks ago. We have got many useful 
suggestions, thanks everyone!

Several people told me that they actually failed in getting workable samples 
for sequencing. I think this is a real situation to many people, and highlight 
the current challenge to this field.

Several researchers pointed me to cyclonic air sampler. This is what we end up 
using in our current testing.

I also got several suggestions about pass the air through a solution, but this 
is not quite portable for us.

Of course passive sampling is among the most suggested. We have included this 
too in our plan for getting genome resources.

For our own testing, we used a portable cyclonic air sampler to pass the air 
onto a filter paper placed on a petri dish. The filter paper was then extracted 
for DNA using a MO BIO water kit. In general, we did not get enough DNA for 
shotgun metagenomics, but kind of enough for amplicon sequencing. We are 
planning on a trial sequencing this month. I’ll keep update.

Cheers,

Zewei

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宋泽伟 Zewei Song
华大生命科学研究院 宏基因组研究所
BGI-Shenzhen Institute of Metagenomics
电话 Tel: +86 13632929180
邮件 Email: songze...@genomics.cn
邮件 Email: songze...@outlook.com

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