Phylogenetic relationships in the tribes Schizopetaleae and Thelypodieae (Brassicaceae) based on nuclear ribosomal ITS region and plastid<i>ndh</i>F DNA sequences
Why this work is in the frame
A frame that forgets how it found something cannot be audited. These are the routes that admitted this work.
Bibliographic record
Abstract
Sequence data from the nuclear ribosomal internal transcribed spacer (ITS) region and plastid gene ndhF of 95 species, represented by 147 accessions, were used to determine the tribal limits, monophyly status, and phylogenetic intra-tribal relationships of genera within the New World tribe Schizopetaleae (formerly Thelypodieae; Brassicaceae). Maximum parsimony, Bayesian, and maximum-likelihood analyses all support the separate recognition of three distinct and generally well-supported clades. The largest corresponds to the North–South American Thelypodieae (27 genera: Catadysia , Caulanthus , Chaunanthus , Chilocardamum , Chlorocrambe , Coelophragmus , Dictyophragmus , Dryopetalon , Englerocharis , Hesperidanthus , Mostacillastrum , Neuontobotrys , Polypsecadium , Pringlea , Pterygiosperma , Romanschulzia , Sibara , Sibaropsis , Stanleya , Streptanthella , Streptanthus , Thelypodiopsis , Thelypodium , Thysanocarpus , Warea , Weberbauera , and Werdermannia ). The remaining six South American Schizopetaleae genera were divided into two clades: SCHIZ I of four genera ( Aschersoniodoxa , Brayopsis , Eudema , and Onuris ) and SCHIZ II Schizopetaleae s. str.: Mathewsia , and Schizopetalon ). Resolution within the Thelypodieae clade was limited in both the ITS- and ndhF-based phylogenies. Based on ITS sequence data, elements of the Old World tribe Brassiceae were sister to the Thelypodieae, whereas the ndhF data strongly supported the Sisymbrieae as sister to the Thelypodieae, and the Brassiceae as sister to both tribes. Sister groups to the Schizopetaleae clades I and II were not clearly resolved. Morphological and cytological data support the separation of these three clades. In SCHIZ II, the sepals are always erect to form a closed tube, and the trichomes are mostly dendritic, although other types also occur. In both the Thelypodieae and SCHIZ I clades, the sepals are variously oriented but never form a closed tube, whereas the trichomes are either absent, or simple, forked, or rarely dendritic. The latter clade differs from both SCHIZ II and Thelypodieae by lacking trichomes or rarely having forked ones and by having exclusively basal, entire leaves. Thelypodieae circumscription should be restricted in future to the Thelypodieae clade, Schizopetaleae circumscription to the SCHIZ II clade, while a new tribe is needed for the SCHIZ I clade.
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.
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) | 0.000 | 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