Furthermore, some microbial genera were clustered together, as they were hardly distinguishable on the basis of their sequences.
At SHP and YNP, conditions were: temperatures >50 °C, pH approximately 2 3, concentrations of sulfur-related compounds were high, and major microbial genera were Hydrogenobaculum, Sulfolobus and Metallosphaera.
The relative abundance of representative microbial genera is indicated as a circle map; circle sizes represent the percentage ratio within a sample.
A subset of microbial genera (Enterobacter, Microbacterium and Paenibacillus, followed by Pantoea species, Stenotrophomonas and Bacillus) appeared to be somewhat conserved across the various host genotype and pot treatment combinations, including plants grown on sterilized sand, suggesting that these microbial genera were inherited rather than soil derived.
Two lists of dominant microbial genera were generated: a) top 20, the most abundant genera (based on 16S rRNA gene-based diversity surveys); and b) genomic information-rich genera (based on taxonomic affiliations of contigs) in SHP, according to relative abundance analyses.
Some microbial genera were more associated with a specific genotype: four of the 9 genera (Enterobacter, Klebsiella, Pantoea, and Stenotrophomonas) cultured on sand-grown Parviglumis were also only cultured from Parviglumis seed, suggesting these to be vertically transmitted (Additional file 5: Figure S3).
Strains from several microbial genera have been identified that have adapted to break down DCM and use it as their sole energy source.
There have been several cases where morphologically distinct microbial genera have turned out to be different life history stages of the same species [39], [40], a phenomenon also found in animals [41].
All three genera are rare.
