The ecology of aero-aquatic hyphomycetes

Прохоров, В. П.; Bodyagin, V. V.

doi:10.3103/s009639250701004x

Cited by 6 publications

(2 citation statements)

References 4 publications

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“…6 ) that is suitable for the long-term production of stress-resistant anemophilous (air-dispersed) spores [ 22 ]. The sum of HFB4-related phenotypes of this species points to the similarity of T. guizhouense to the group of aero-aquatic (or amphibious) fungi [ 73 , 74 ]. Such fungi can grow well in water and have adaptations for forming aerial reproductive mycelia.…”

Section: Discussionmentioning

confidence: 99%

Evolutionary compromises in fungal fitness: hydrophobins can hinder the adverse dispersal of conidiospores and challenge their survival

et al. 2020

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Fungal evolutionary biology is impeded by the scarcity of fossils, irregular life cycles, immortality, and frequent asexual reproduction. Simple and diminutive bodies of fungi develop inside a substrate and have exceptional metabolic and ecological plasticity, which hinders species delimitation. However, the unique fungal traits can shed light on evolutionary forces that shape the environmental adaptations of these taxa. Higher filamentous fungi that disperse through aerial spores produce amphiphilic and highly surface-active proteins called hydrophobins (HFBs), which coat spores and mediate environmental interactions. We exploited a library of HFB-deficient mutants for two cryptic species of mycoparasitic and saprotrophic fungi from the genus Trichoderma (Hypocreales) and estimated fungal development, reproductive potential, and stress resistance. HFB4 and HFB10 were found to be relevant for Trichoderma fitness because they could impact the spore-mediated dispersal processes and control other fitness traits. An analysis in silico revealed purifying selection for all cases except for HFB4 from T. harzianum, which evolved under strong positive selection pressure. Interestingly, the deletion of the hfb4 gene in T. harzianum considerably increased its fitness-related traits. Conversely, the deletion of hfb4 in T. guizhouense led to the characteristic phenotypes associated with relatively low fitness. The net contribution of the hfb4 gene to fitness was found to result from evolutionary tradeoffs between individual traits. Our analysis of HFB-dependent fitness traits has provided an evolutionary snapshot of the selective pressures and speciation process in closely related fungal species.

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Section: Discussionmentioning

confidence: 99%

Evolutionary compromises in fungal fitness: hydrophobins can hinder the adverse dispersal of conidiospores and challenge their survival

et al. 2020

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“…Los hifomicetos acuáticos habitan en zonas templadas y tropicales y se han descrito cerca de 335 especies (Roldán & Honrubia,1988;Roldán, et al, 1987;Bärlocher, 1992;Goh & Hyde, 1996;Harrington, 1997;Czeczuga & Orlowska, 1999;Gönczol, et al, 1999;Prokhorov & Bodyagin, 2007a, 2007bShearer, et al, 2007;Duarte, et al, 2015;Fernández & Smits, 2015). Sin embargo, los registros de hifomicetos en los trópicos son pocos debido a la falta de estudios, fallas en los métodos de muestreo, a las condiciones fisicoquímicas inapropiadas en las corrientes de agua y la competencia con otros microorganismos por el sustrato vegetal (Graça, et al, 2016).…”

unclassified

Hongos ingoldianos de la parte media del río Gaira, Sierra Nevada de Santa Marta, Colombia

Peñate-Carranza

Tamaris-Turizo

Luna-Fontalvo

2021

Rev. Acad. Colomb. Cienc. Ex. Fis. Nat.

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Los hifomicetos acuáticos son hongos microscópicos que han sido poco estudiados en ríos tropicales y que cumplen un importante papel en la descomposición de la materia orgánica vegetal en los ecosistemas lóticos. El objetivo de este trabajo fue determinar los hifomicetos acuáticos presentes en la parte media del río Gaira (norte de Colombia). Se analizaron muestras cualitativas de espuma del río y de hojas de tres especies vegetales nativas dominantes en el área de estudio (Ficus tonduzii,Zygia longifolia y Clusia multiflora) almacenadas en el lecho del río. Se identificaron diez géneros que incluían cuatro especies: Diplocladiella scalaroides, Heliscus submersus, Alatospora acuminata y Flabellospora crassa. En la parte media del río Gaira se registraron por primera vez los géneros Diplocladiella, Triscelophorus, Actinospora, Lemonniera, Alatospora, Flabellospora y Heliscus. El estudio evidenció la gran diversidad de hifomicetos acuáticos de la Sierra Nevada de Santa Marta.

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