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Spores (in Melzer) of sunflower white rust fungus...on-the-Brazos a day before. Texas  
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Spores (in Melzer) of sunflower white rust fungus Pustula tragopogonis (Pustula obtusata, Albugo tragopogonis)(?) together with conidia of Alternaria leaf spot(?), collected from white powdery stuff with web from underside leaves of squaw-weed (Senecio ampullaceus) in Washington-on-the-Brazos a day before. Texas, March 7, 2023

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Thumbnail 3358-31: Spores (in Melzer) of sunflower white...Brazos a day before. Texas Show full size picture

Histogram
Shooting data

Similar   Thumbnail of picture 3358-30: Spores an conidia(?) (in KOH) of sunflower white rust fungus Pustula ... on-the-Brazos a day before. Texas, March 7, 2023 Thumbnail of picture 3358-32: Tissues (in Melzer) of sunflower white rust fungus Pustula ... on-the-Brazos a day before. Texas, March 7, 2023 Thumbnail of picture 3356-23: Underside of a leaf of squaw-weed (Senecio ampullaceus) with sunflower ... Historic Site. Washington, Texas, March 6, 2023 Thumbnail of picture 3368-23: Underside of leaves of squaw-weed (Senecio ampullaceus) with sunflower ... Creek Park. College Station, Texas, March 20, 2023 Thumbnail of picture 3368-24: Close-up of underside of leaves of squaw-weed (Senecio ampullaceus ... Creek Park. College Station, Texas, March 20, 2023
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Spores and conidia of the sunflower white rust fungus Pustula tragopogonis, along with those of Alternaria leaf spot, were collected from a white powdery substance found on the underside of squaw-weed leaves in Washington-on-the-Brazos, Texas, on March 7, 2023. The collection was made the day before. – generated by AI

The image displays a microscopic view of fungal spores and conidia on plant leaf tissue. The spores are elongated structures with rounded ends, exhibiting greenish-yellow coloration due to staining with Melzer's reagent. They measure approximately 10 micrometers in length.

Several features are notable:

* **Spore Coloration:** The spores appear yellow-green due to the influence of Melzer's reagent.
* **Conidia**: Conidia, the asexual reproductive structures of fungi, are visible on the leaf surface. These conidia are smaller and rounder than the spores.
* **Leaf Surface**: The leaf surface appears white powdery, indicating the presence of fungal mycelium or spores.

**Conclusion:**

The image depicts a microscopic view of fungal spores and conidia on plant leaf tissue, likely from the sunflower rust fungus (Pustula tragopogonis) and Alternaria leaf spot. The presence of these organisms can cause disease in plants, particularly those with white powdery spots or web-like structures on their leaves.

**Final Answer:** The final answer is not applicable as this question requires a descriptive response rather than a numerical solution. – AI vision

Esporas (en Melzer) del hongo Pustula tragopoginís de la roya blanca en girasol junto con conidios de la mancha foliar Alternaria (?), recolectadas de una sustancia blanca pulverulenta con red desde la parte inferior de las hojas de senecio ampullaceus en Washington-on-the-Brazos un día antes. Texas, 7 de marzo del 2023. La imagen muestra una vista microscópica de esporas y conidios fúngicos en el tejido de la hoja de plantas. Las esporas son estructuras alargadas con extremos redondeados, que exhiben una coloración amarillo-verdosa debido a la tinción con el reactivo de Melzer. miden aproximadamente 10 micrómetros de longitud. Varios rasgos son destacables:
* **Coloración de las esporas:** Las esporas parecen de color verde-amarillo debido a la influencia del reactivo de Melzer. * **Conidios**: Los conidios, estructuras reproductoras sexuales de los hongos, son visibles en la superficie de la hoja. Estos conidios son más pequeños y redondos que las esporas. * **Superficie foliar:** La superficie de la hoja parece blanca pulverulenta, lo que indica la presencia de micelio fúngico o esporas. **Conclusión:** La imagen representa una vista microscópica de esporas y conidios fúngicos en el tejido de la hoja de plantas, probablemente del hongo de la roya blanca de girasol (Pustula tragopogonis) y mancha foliar Alternaria. La presencia de estos organismos puede causar enfermedades en las plantas, especialmente aquellas con manchas blancas pulverulentas o estructuras similares a redes en sus hojas. **Respuesta final:** La respuesta final no es aplicable ya que esta pregunta requiere una respuesta descriptiva en lugar de una solución numérica. – Spanish translation


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