Diazotrophic bacteria reside inside <i>Suillus tomentosus</i> / <i>Pinus contorta</i> tuberculate ectomycorrhizae
Bibliographic record
Abstract
Culturable bacteria from Suillus tomentosus / Pinus contorta tuberculate ectomycorrhizae (TEM) tissues were evaluated to identify possible causative agents of TEM-associated nitrogenase activity in a naturally regenerating pine forest. Bacteria from internal and external TEM tissues were isolated over a 3 year sampling period and representative colony types were identified using gas chromatograph fatty acid methyl ester and 16S rDNA sequence analyses. Eighteen species of bacteria belonging to at least eight genera (Pseudomonas, Bacillus, Xanthomonas, Xanthobacter, Sphingobacterium, Burkholderia, Curtobacterium, and an actinomycete) were isolated from the TEM surface. In contrast, four bacterial species belonging to three genera (Paenibacillus, Methylobacterium, and Micrococcus) distinct from those found on the TEM surface were isolated from surface-sterilized TEM. None of the TEM surface isolates were diazotrophic but three of the four species from the TEM interior (Paenibacillus amylolyticus, Paenibacillus pabuli, and Methylobacterium mesophilicum) possessed the nifH gene and were capable of some acetylene reduction. Our findings indicate that nitrogen fixing bacteria also reside within TEM and should be considered as possible causative agents of TEM-associated nitrogenase activity on lodgepole pine.
Fetched live from OpenAlex and de-inverted. Abstracts are not stored in this database: the inverted indexes are 8.6 GB of the frame’s 9.3 GB of text, and the host has 13 GB free.
How this classification was reachedexpand
Full frame distilled prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. Learned from the 10,348 direct Codex labels and 10,348 direct Gemma labels. Candidate is the union of thresholded teacher heads; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels or direct frontier model labels.
Codex and Gemma teacher scores by category
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.000 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.009 | 0.003 |
Machine scores (provisional)
The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.
Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from itClassification
machine, unvalidatedMachine predicted; both teacher heads agree on what is shown here.
How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".