An Illustrated Key to the Common Temperate Species of Aquatic Hyphomycetes

Gulis, Vladislav; Marvanová, Ludmila; Descals, Enrique

doi:10.1007/1-4020-3466-0_21

Cited by 82 publications

(75 citation statements)

References 12 publications

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“…One of the basic requirements to follow morphological diversity of aquatic hyphomycetes and taxonomic descriptions is microscopic observations (conidial morphology and ontogeny) (Ingold 1975). Studies on conidial morphology and ontogeny resulted in description of diverse aquatic hyphomycetes throughout the world (Ingold 1975; Marvanová 1997; Gulis et al 2005). Considering adhesion property of conidia, a variety of techniques have been designed for assessment of aquatic hyphomycetes (e.g.…”

Section: Discussionmentioning

confidence: 99%

Diurnal periodicity of conidia of aquatic hyphomycetes in water and entrapment on latex-coated slides in two South Indian streams

Ghate

Sridhar

2016

Mycology

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Aquatic hyphomycete conidial trapping efficiency by the banyan (F. benghalensis L.) latex-coated glass slides was tested diurnally (3 h intervals) in the Western Ghats (Sampaje) and west coast (Konaje) streams in relation to abiotic factors (humidity, air temperature and water temperature). The conidial trapping efficiency of latex-coated slides was compared with plain glass slides and drift conidia in water. Three methods of assessment showed higher species richness, conidial richness and diversity in Sampaje than in Konaje stream. In both streams, species richness, conidial richness and diversity in latex-coated slides were the highest followed by conidia in water and plain slides. Three-way ANOVA revealed significant differences in overall species and conidial richness between the streams, sampling methods and time of sampling (p < 0.001). Multiple comparisons by Holm–Sidak test revealed significant differences in overall species and conidial richness between Sampaje and Konaje (p < 0.001); latex-coated slides and plain slides (p < 0.001); latex-coated slides and water filtration (p < 0.001); plain slides and water filtration (p < 0.001). Total species, total conidia and diversity assessed by the three methods peaked during 12 am–3 am in Sampaje stream, while during 3 am–6 am in Konaje stream. Cooler conditions due to relatively low water temperature favoured higher diversity of aquatic hyphomycetes in Sampaje than in Konaje stream. The three methods employed in the present study were not biased towards scolecoid or stauroid conidia. The top five species in both streams was composed of both types of conidia corroborating earlier annual or biannual studies in Konaje and Sampaje streams. Thus, assessment of population of aquatic hyphomycetes using banyan latex-coated slides will be advantageous over plain slides and drift conidia in streams.

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Section: Discussionmentioning

confidence: 99%

Diurnal periodicity of conidia of aquatic hyphomycetes in water and entrapment on latex-coated slides in two South Indian streams

Ghate

Sridhar

2016

Mycology

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“…The number of Petri dishes obtained at this phase depended on the decomposition rate of the leaves, because in each dish the leaf fragments should remain submerged, not overlaying, but free, in a mostly similar way to what would occur in the field. From the 5 th day on of incubation of the Petri dishes at a temperature about 20 o C, slides of the leaf fragments were prepared, using only drops of sterile distilled water and covered with coverslip, to be observed under an optical microscope, in order to look for taxonomical relevant features, which allow the identification of the species according to current literature (Nilsson 1964, Ingold 1975, Marvanová 1997, Santos-Flores & Betancourt-Lopez 1999, Gulis et al 2005.…”

Section: Methodsmentioning

confidence: 99%

Diversity of conidial fungi and some abiotic variables of the water after the reopening of the Pirarungaua stream in the Jardim Botânico, São Paulo, São Paulo State, Brazil

Schoenlein-Crusius

Diniz

Costa

et al. 2016

Hoehnea

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-(Diversity of conidial fungi and some abiotic variables of the water after the reopening of the Pirarungaua stream in the Jardim Botânico, São Paulo, São Paulo State, Brazil). To evaluate the fungal diversity in the Pirarungaua stream reopened after remaining channeled about 40 years in the Botanical Garden of São Paulo, Brazil, two experiments in the cold and dry season and two in the hot and rainy season were performed. Leaves of Tibouchina pulchra Cogn and mixed leaf litter were confined in nylon litter bags, submerged and collected monthly, together with free leaf litter samples. Some abiotic factors were measured in the water. The leaves were fragmented, incubated in sterile water at 22 ºC and microscopically analyzed. We identified 33 conidial fungal taxa, among which, 23 are new to this area. Comparing seasons, the similarity of the mycota of confined T. pulchra leaves corresponded to 39% and to 56% regarding the confined mixed leaf litter. Similarities of 48-50% occurred between the mycota of confined and free leaf litter samples. Confined leaves showed a tendency to support higher numbers of species, whereas some rare fungi like Ulocoryphus mastigophorus Michaelides L. Hunter & W.B Kendr were more frequent in free leaf litter. Based on the results, it is recommended to monitor the limnological conditions of the stream and to promote awareness among the local population and visitors about the importance of a water body, even artificial, for the establishment of microclimatic features, and for the biodiversity of fungi. Keywords: aquatic Hyphomycetes, conidial fungi, fungal diversity, stream recovery RESUMO -(Diversidade de fungos conidiais e algumas variáveis abióticas da água após a reabertura do córrego Pirarungaua no Jardim Botânico, São Paulo, SP, Brasil). Para avaliar a diversidade de fungos no córrego Pirarungaua, reaberto após ter permanecido canalizado por cerca de 40 anos no Jardim Botânico de São Paulo, Brasil, foram realizados dois experimentos nas estações frias e secas e duas nas estações quentes e chuvosas. Folhas de Tibouchina pulchra Cogn e folhedo misto foram confinados em sacos de tela de nylon, submersas e coletadas mensalmente, juntamente com amostras de folhedo livre submerso. Alguns fatores abióticos foram medidos na água. As folhas foram fragmentadas, incubadas em água esterilizada, a 22 ºC e microscopicamente analisadas, identificando-se 35 táxons de fungos conidiais, entre os quais 23 são novos para a área. Comparando as estações climáticas, a similaridade da micota confinada de T. pulchra correspondeu a 38% e a 56% com relação ao folhedo misto confinado. As folhas confinadas mostraram a tendência de oferecer suporte a maior número de espécies, enquanto alguns fungos raros como Ulocoryphus mastigophorus Michaelides L. Hunter & W.B Kendr foram mais frequentes no folhedo livre. Com base nos resultados é recomendado o monitoramento das condições limnológicas do córrego e conscientização da população local e dos visitantes sobre a importância que um corpo d' água, mesmo art...

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“…The filters were fixed and stained with a 60% lactic acid and 0.1% trypan blue solution (18). All filters were examined microscopically at a magnification of ϫ200, and spores present were counted and identified to the species level (34,35).…”

Section: Methodsmentioning

confidence: 99%

“…(i) Preparation of spore suspensions. To encompass the variety of size and shape in spores produced by aquatic hyphomycetes, seven species from fungal assemblages reported in studied streams ( (34,35). Growing colonies were kept at 15°C in petri dishes with 10 ml of 2% malt agar.…”

Section: Methodsmentioning

confidence: 99%

Aquatic Hyphomycete Species Are Screened by the Hyporheic Zone of Woodland Streams

Cornut

Chauvet

Mermillod‐Blondin

et al. 2014

Appl Environ Microbiol

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c Aquatic hyphomycetes strongly contribute to organic matter dynamics in streams, but their abilities to colonize leaf litter buried in streambed sediments remain unexplored. Here, we conducted field and laboratory experiments (slow-filtration columns and stream-simulating microcosms) to test the following hypotheses: (i) that the hyporheic habitat acting as a physical sieve for spores filters out unsuccessful strategists from a potential species pool, (ii) that decreased pore size in sediments reduces species dispersal efficiency in the interstitial water, and (iii) that the physicochemical conditions prevailing in the hyporheic habitat will influence fungal community structure. Our field study showed that spore abundance and species diversity were consistently reduced in the interstitial water compared with surface water within three differing streams. Significant differences occurred among aquatic hyphomycetes, with dispersal efficiency of filiform-spore species being much higher than those with compact or branched/tetraradiate spores. This pattern was remarkably consistent with those found in laboratory experiments that tested the influence of sediment pore size on spore dispersal in microcosms. Furthermore, leaves inoculated in a stream and incubated in slow-filtration columns exhibited a fungal assemblage dominated by only two species, while five species were codominant on leaves from the stream-simulating microcosms. Results of this study highlight that the hyporheic zone exerts two types of selection pressure on the aquatic hyphomycete community, a physiological stress and a physical screening of the benthic spore pool, both leading to drastic changes in the structure of fungal community.

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An Illustrated Key to the Common Temperate Species of Aquatic Hyphomycetes

Cited by 82 publications

References 12 publications

Diurnal periodicity of conidia of aquatic hyphomycetes in water and entrapment on latex-coated slides in two South Indian streams

Diurnal periodicity of conidia of aquatic hyphomycetes in water and entrapment on latex-coated slides in two South Indian streams

Diversity of conidial fungi and some abiotic variables of the water after the reopening of the Pirarungaua stream in the Jardim Botânico, São Paulo, São Paulo State, Brazil

Aquatic Hyphomycete Species Are Screened by the Hyporheic Zone of Woodland Streams

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