Phylogenetic Analyses and the Distribution of Nematophagy Support a Monophyletic Pleurotaceae within the Polyphyletic Pleurotoid-Lentinoid Fungi
Why this work is in the frame
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Bibliographic record
Abstract
Phylogenetic analyses based on partial sequences from nuclear 25S rDNA indicate a monophyletic Pleurotaceae, consisting of the monophyletic genera Pleurotus and Hohenbuehelia, within the polyphyletic pleurotoid-lentinoid fungi. The attack and consumption of nematodes (nematophagy) supports the monophyly of this family. Other pleurotoid-lentinoid fungi that have been studied are not nematophagous and, in phylogenetic analyses, occur within the euagaric, polyporoid and russuloid clades. The pleurotoid agarics Lampteromyces, Lentinula, Nothopanus, and Omphalotus form a clade together with Gymnopus dryophilus. A clade that corresponds to the Tricholomataceae includes the pleurotoid agarics Conchomyces, Hypsizygus, Phyllotopsis, and Resupinatus. Faerberia, Heliocybe, Lentinus, Neolentinus, and Panus are gilled polypores, and all deserve recognition at the generic level. The brown-rotters Heliocybe and Neolentinus form a distinct clade within the polypores together with the brown-rotting polypore, Gloeophyllum. The Pleurotaceae belong in the Agaricales, are not closely related to or synonymous with the Polyporaceae, and should be restricted to the genera Pleurotus and Hohenbuehelia. An isolate of Hohenbuehelia from Alberta, Canada produces adhesive knobs typical of Hohenbuehelia and its anamorph Nematoctonus, and also nonadhesive nematotoxic droplets characteristic of Pleurotus. This combination is unique within Hohenbuehelia and Pleurotus. Phylogenetic analyses place this species at the base of the genus Hohenbuehelia, indicating that nematotoxic droplets were probably present in the common ancestor of Pleurotus and Hohenbuehelia. In contrast, the gelatinized fruiting bodies of Hohenbuehelia and Resupinatus are independently derived. The tribe Resupinateae (Tricholomataceae) should be restricted to Resupinatus (including Asterotus) and cyphelloid allies such as Stigmatolemma.
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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) | 0.005 | 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 it