Contribution to the knowledge of the genus Neohypodiscus (Ascomycota) in South America: first records of N. cerebrinus and N. rickii from northwestern Argentina
Background and aims: Neohypodiscus was established to replace Hypodiscus, a later homonym of an angiosperm. The genus is restricted to the Americas and is characterized by massive stromata with non-amyloid unitunicate asci and brown septate ascospores. Although currently classified within the order...
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| Formato: | Artículo revista |
| Lenguaje: | Inglés |
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Sociedad Argentina de Botánica
2025
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| Acceso en línea: | https://revistas.unc.edu.ar/index.php/BSAB/article/view/49726 |
| Aporte de: |
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I10-R325-article-49726 |
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ojs |
| institution |
Universidad Nacional de Córdoba |
| institution_str |
I-10 |
| repository_str |
R-325 |
| container_title_str |
Boletín de la Sociedad Argentina de Botánica |
| language |
Inglés |
| format |
Artículo revista |
| topic |
Funga New records Yungas Sordariomycetes Funga Nuevos registros Yungas Sordariomycetes |
| spellingShingle |
Funga New records Yungas Sordariomycetes Funga Nuevos registros Yungas Sordariomycetes Sir, Esteban B. Sir, Esteban B. Medina , Patricia V. Contribution to the knowledge of the genus Neohypodiscus (Ascomycota) in South America: first records of N. cerebrinus and N. rickii from northwestern Argentina |
| topic_facet |
Funga New records Yungas Sordariomycetes Funga Nuevos registros Yungas Sordariomycetes |
| author |
Sir, Esteban B. Sir, Esteban B. Medina , Patricia V. |
| author_facet |
Sir, Esteban B. Sir, Esteban B. Medina , Patricia V. |
| author_sort |
Sir, Esteban B. |
| title |
Contribution to the knowledge of the genus Neohypodiscus (Ascomycota) in South America: first records of N. cerebrinus and N. rickii from northwestern Argentina |
| title_short |
Contribution to the knowledge of the genus Neohypodiscus (Ascomycota) in South America: first records of N. cerebrinus and N. rickii from northwestern Argentina |
| title_full |
Contribution to the knowledge of the genus Neohypodiscus (Ascomycota) in South America: first records of N. cerebrinus and N. rickii from northwestern Argentina |
| title_fullStr |
Contribution to the knowledge of the genus Neohypodiscus (Ascomycota) in South America: first records of N. cerebrinus and N. rickii from northwestern Argentina |
| title_full_unstemmed |
Contribution to the knowledge of the genus Neohypodiscus (Ascomycota) in South America: first records of N. cerebrinus and N. rickii from northwestern Argentina |
| title_sort |
contribution to the knowledge of the genus neohypodiscus (ascomycota) in south america: first records of n. cerebrinus and n. rickii from northwestern argentina |
| description |
Background and aims: Neohypodiscus was established to replace Hypodiscus, a later homonym of an angiosperm. The genus is restricted to the Americas and is characterized by massive stromata with non-amyloid unitunicate asci and brown septate ascospores. Although currently classified within the order Boliniales, its taxonomic position within the Sordariomycetes remains uncertain. In this article, we contribute to the understanding of Neohypodiscus in the context of the Southern Cone of South America.
M&M: Specimens were collected from both protected natural areas in the northwest of the country and urban areas. The study was conducted using conventional mycological techniques and both light and epifluorescence microscopy.
Results: Neohypodiscus cerebrinus and N. rickii are described and thoroughly illustrated with photographic images. Taxonomic notes and observations on host preference are provided. In addition, preliminary observations on the interaction between a fungicolous fungus and the stromata of N. rickii are presented.
Conclusions: This study expands the known distribution of Neohypodiscus species in the Southern Cone of South America. In particular, N. cerebrinus —although widespread across the Americas— appears to be rare within Las Yungas, where it may exhibit host specificity for Ocotea porphyria. In contrast, N. rickii occurs on diverse native and exotic plant species, and its stromata are frequently colonized by a fungicolous basidiomycete. The findings suggest a dual ecological role for Neohypodiscus as both a saprobe and a mycohost |
| publisher |
Sociedad Argentina de Botánica |
| publishDate |
2025 |
| url |
https://revistas.unc.edu.ar/index.php/BSAB/article/view/49726 |
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I10-R325-article-497262025-12-23T14:44:10Z Contribution to the knowledge of the genus Neohypodiscus (Ascomycota) in South America: first records of N. cerebrinus and N. rickii from northwestern Argentina Contribución al conocimiento del género Neohypodiscus (Ascomycota) en Sudamérica: primer registro de N. cerebrinus y N. rickii en el noroeste de Argentina Sir, Esteban B. Sir, Esteban B. Medina , Patricia V. Funga New records Yungas Sordariomycetes Funga Nuevos registros Yungas Sordariomycetes Background and aims: Neohypodiscus was established to replace Hypodiscus, a later homonym of an angiosperm. The genus is restricted to the Americas and is characterized by massive stromata with non-amyloid unitunicate asci and brown septate ascospores. Although currently classified within the order Boliniales, its taxonomic position within the Sordariomycetes remains uncertain. In this article, we contribute to the understanding of Neohypodiscus in the context of the Southern Cone of South America. M&M: Specimens were collected from both protected natural areas in the northwest of the country and urban areas. The study was conducted using conventional mycological techniques and both light and epifluorescence microscopy. Results: Neohypodiscus cerebrinus and N. rickii are described and thoroughly illustrated with photographic images. Taxonomic notes and observations on host preference are provided. In addition, preliminary observations on the interaction between a fungicolous fungus and the stromata of N. rickii are presented. Conclusions: This study expands the known distribution of Neohypodiscus species in the Southern Cone of South America. In particular, N. cerebrinus —although widespread across the Americas— appears to be rare within Las Yungas, where it may exhibit host specificity for Ocotea porphyria. In contrast, N. rickii occurs on diverse native and exotic plant species, and its stromata are frequently colonized by a fungicolous basidiomycete. The findings suggest a dual ecological role for Neohypodiscus as both a saprobe and a mycohost Introducción y objetivos: Neohypodiscus fue establecido para sustituir al nombre genérico Hypodiscus, un homónimo posterior de un género de angiosperma. El género está restringido al continente americano y se caracteriza por presentar estromas masivos con ascos unitunicados no amiloides y ascosporas castañasseptadas. Aunque actualmente está clasificado en el Orden Boliniales, su posición taxonómica en la clase Sordariomycetes es incierta. Este trabajo contribuye al conocimiento actual de Neohypodiscus en el Cono Sur de Sudamérica.M&M: Los especímenes fueron colectados en áreas naturales protegidas del noroeste argentino y en zonas urbanas. El estudio se realizó siguiendo técnicas micológicas convencionales y microscopía óptica y de epifluorescencia.Resultados: Se describen a Neohypodiscus cerebrinus y N. rickii, aportando notas taxonómicas, observaciones sobre la preferencia de hospedadores e ilustraciones fotográficas detalladas. Además, se presentan observaciones preliminares e imágenes fotográficas de la interacción de un Basidiomycota fungícola con estromas de N. rickii.Conclusiones: Este estudio amplía la distribución conocida del género Neohypodiscus en el Cono Sur de Sudamérica. En particular, N. cerebrinus está ampliamente distribuido en América, sin embargo, es una especie rara en el ecosistema de Las Yungas, donde parece mostrar especificidad con Ocotea porphyria. Por el contrario, N. rickii está relacionado con diversas especies vegetales, y sus estromas están frecuentemente colonizados por un Basidiomycete fungícola. Estos hallazgos sugieren un doble rol ecológico de Neohypodiscus, como saprobio y micohospedador. Sociedad Argentina de Botánica 2025-12-31 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion application/pdf text/html https://revistas.unc.edu.ar/index.php/BSAB/article/view/49726 10.31055/1851.2372.v60.n4.49726 Boletín de la Sociedad Argentina de Botánica (Journal of the Argentine Botanical Society; Vol. 60 No. 4 (2025): December Boletín de la Sociedad Argentina de Botánica; Vol. 60 Núm. 4 (2025): Diciembre Boletín de la Sociedad Argentina de Botánica; v. 60 n. 4 (2025): Diciembre 1851-2372 0373-580X 10.31055/1851.2372.v60.n4 eng https://revistas.unc.edu.ar/index.php/BSAB/article/view/49726/51420 https://revistas.unc.edu.ar/index.php/BSAB/article/view/49726/51421 Derechos de autor 2025 Esteban B. Sir, Patricia V. Medina https://creativecommons.org/licenses/by-nc-sa/4.0 |