<i>Pectobacterium sinaloense</i> sp. nov., a novel phytopathogenic species isolated from potato plants in Mexico
Bibliographic record
Abstract
ABSTRACT As part of a broader effort to survey and characterize the diversity of pectolytic bacteria affecting potato crops in Mexico, phytopathogenic strains were isolated from soft rot symptoms in potato plants in Sinaloa. Among them, an atypical Pectobacterium -like strain, LFLA-215 T , could not be confidently assigned to any known species through biochemical or molecular methods. To clarify its taxonomic position and explore its genomic and functional features, whole-genome sequencing and comparative analyses were conducted, accompanied by biochemical, morphological and pathogenicity evaluations. The strain LFLA-215 T is Gram-stain-negative, with peritrichous flagella, catalase-positive, and oxidase-negative. Phylogenetic analyses based on the 16S rRNA operon, dnaJ , and 923 core genes, confirmed that strain LFLA-215 T belongs to the genus Pectobacterium . However, genomic similarity values with other Pectobacterium species, ranging from 87.73–93.53% (ANIb), 87.63–93.46% (ANIu), and 34.0–52.1% (isDDH), fell below species delineation thresholds. Pectobacterium colocasium LJ1 T showed the closest relationship to LFLA-215 T , whereas Pectobacterium parmentieri RNS 08-42-1A T was the most distantly related. Although LFLA-215 T fulfilled Koch’s postulates and demonstrated pathogenicity in potato plants, its virulence on tubers was comparatively lower than that of other known Pectobacterium strains, which could be related to the size and the reduction of the total number of genes when analyzed its complete genome reported here. Taken all together, our findings support the classification of strain LFLA-215 T as a novel species within the genus Pectobacterium , for which the name Pectobacterium sinaloense sp. nov. is proposed, with LFLA-215 T designated as the type strain.
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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) | 0.001 | 0.001 |
| Meta-epidemiology (broad) | 0.001 | 0.000 |
| Bibliometrics | 0.000 | 0.001 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.001 | 0.001 |
| Research integrity | 0.001 | 0.001 |
| 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 itClassification
machine, unvalidatedMachine predicted; a candidate call from one teacher head, 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".