<scp> <i>Eurosta solidaginis</i> </scp> ‐induced stem galls affect strength and colour of botanical dyes extracted from giant goldenrod ( <scp> <i>Solidago gigantea</i> </scp> )
Bibliographic record
Abstract
Societal Impact Statement With increasing demand for sustainable goods, botanical dyes are of increasing interest and value to consumers, industry and small‐scale artisanal producers. Goldenrod is a widely used dye plant with a long history of traditional use. The impact of the well‐studied goldenrod stem gall produced by Eurosta solidaginis on goldenrod botanical dyes—and the broader impact of insect herbivory on plant dyes—has not been explored. Our research provides an initial investigation into how dye strength and colour are affected by the complex gall‐maker‐host–plant relationship—an essential step in understanding the value insect herbivory may bring to botanical dye production, as well as potential limitations of this dye variation in larger scale production. Summary Goldenrod ( Solidago spp.) plants produce botanical dyes with a long history of traditional use. The concentration and profile of phenolic compounds in goldenrod, influenced by biotic and abiotic factors, impact the properties of the resulting dyes. We investigated whether the presence of the stem‐galling insect E. solidaginis (Diptera: Tephritidae) affected dye produced from goldenrod. Leaves collected from upper and lower stem sections of galled and non‐galled goldenrod plants were processed to extract dye compounds into a soluble form. The dye was analysed through colourimetric comparison of dyed fabric swatches and spectrophotometry of aqueous extracts to evaluate phenolic content. Through colourimetric analysis using a paired t ‐test, we found that the colour difference between upper and lower leaves was significantly affected by whether the plant was galled (t[6] = −2.80, p = 0.02). Comparing dyes made from lower versus the upper leaves of the same plants showed a larger colourimetric difference in non‐galled than galled plants. This indicates that the galling insect affected the availability of dye compounds. Spectrophotometric analysis showed that increases in total phenolics between lower and upper leaves of galled plants were not significantly greater than in non‐galled plants ( p = 0.103), indicating a possible response to insect herbivory. The differing effects of the gall on dye content and total phenolics illustrate the complexity of plant–herbivore interactions and provide insight into the influence of biotic factors on botanical dyes.
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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 | 0.001 |
| Insufficient payload (model declined to judge) | 0.002 | 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".