Symbiosis Specificity of the Preceding Host Plant Can Dominate but Not Obliterate the Association Between Wheat and Its Arbuscular Mycorrhizal Fungal Partners
Bibliographic record
Abstract
Specificity of plant-host genotype is a key driver of arbuscular mycorrhizal fungi (AMF) communities. To clarify preferential associations between wheat (Triticum aestivum) and AMF and the effect of previous host and inoculum type (intact extraradicular mycelium (ERM) vs disrupted mycelium/spores), we studied AMF communities in the transition from Lolium rigidum, Ornithopus compressus, or a co-planting of both, to wheat, through sequencing of the LSU rDNA gene. Since the outcome of a specific host-symbiont interaction depends on the molecular responses of the host plant upon microbial colonization, the expression of six key symbiosis-related genes on wheat roots was also investigated. AMF communities on L. rigidum and O. compressus were clearly distinct. Under an undisturbed ERM, wheat AMF communities were similar to previous hosts, and O. compressus-wheat-AMF interactions matched a greater growth of wheat than L. rigidum-wheat-AMF interactions. This effect declined under disrupted ERM, generating also a greater activation of symbiotic genes in wheat, indicating that plant symbiotic program depends on some extent on the colonizing symbiont source. When L. rigidum and O. compressus were co-planted, the wheat colonisation pattern resembled that of O. compressus, although that was not reflected in a greater growth. Our data support the existence of a lasting effect of previous hosts in shaping wheat AMF communities through an efficient use of the established ERM, although partially retaining its host-symbiont specificity.
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 machine prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. The Gemma side is a direct model label for every work in the frame, read from the title-only record. The Codex side is a classifier learned from the 10,348 direct Codex labels and calibrated to design-weighted sample rates; fields without enough sample support carry no Codex call. Candidate is the union of the two sides; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels.
Distilled classifier scores by category (both heads)
| 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) | 0.001 | 0.000 |
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; a candidate call from one source (direct Gemma or distilled Codex), not a consensus.
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".