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In a study of the seasonal dynamics in bacterial diversity of alpine dry meadow soils, I discovered a previously undescribed bacterial candidate division in two soil samples collected in the spring (Lipson and Schmidt 2004). I have named this group, SPAM, for Spring Alpine Meadow, though it appears in other environments. Lipson, D.A., and Schmidt, S.K. (2004) Seasonal Changes in an Alpine Soil Bacterial Community. Applied and Environmental Microbiology 70: 2867-2879 |
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NCBI Accession numbers for Alpine SPAM sequences:Other incidences of SPAM:AY921949 (Minnesota Farm soil) AF428647 (Chinese river) AF234132 (Australian soil)
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Maximum likelihood phylogenetic tree of representative bacterial sequences from Colorado alpine soils.(Sequences starting with S are from summer, W from winter and P from spring. Others are from GenBank) Three sequences (two of which are nearly identical) found only in the spring libraries formed a candidate division with several sequences from GenBank. This group is referred to as SPAM (Spring Alpine Meadow). Parsimony and neighbor joining analysis of the sequences shown below both give 100% bootstrap support for this group. A single sequence from a summer sample also appeared to represent a novel division along with 2 sequences from GenBank, although bootstrap support for this group was low in the parsimony and neighbor joining analysis. This group is referred to as SAM (Summer Alpine Meadow). |
And who dares mock Spam?
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