<i>In Vitro</i>Hyphal Interactions Among Wood- and Leaf-Inhabiting Ascomycetes and Fungi Imperfecti from Freshwater Habitats

Shearer, Carol A.; Zare‐Maivan, Hassan

doi:10.1080/00275514.1988.12025494

Cited by 36 publications

(11 citation statements)

References 19 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The predominance of cooperative (or at least neutral) interactions between aquatic hyphomycetes is also suggested by extensive intermingling of hyphae from several species on leaves decaying in streams (Shearer and Lane 1983). On the other hand, most interspecific interactions on artificial media resulted in inhibition of one or both members of a pair (Shearer and Zare-Maivan 1988). Simultaneous inoculation of Tetrachaetum elegans and Flagellospora curvula reduced the reproductive effort (conidial production) of both species (Treton et al 2004), and surfaces of newly introduced leaves quickly become less hospitable for the settling and germination of conidia, possibly due to interference by earlier arrivals (Nikolcheva et al 2005).…”

Section: Discussionmentioning

confidence: 97%

Aquatic hyphomycete diversity and identity affect leaf litter decomposition in microcosms

et al. 2006

View full text Add to dashboard Cite

We conducted a microcosm experiment with monocultures and all possible combinations of four aquatic hyphomycete species, Articulospora tetracladia, Flagellospora curta, Geniculospora grandis and Heliscus submersus, to examine the potential effects of species richness on three functional aspects: leaf litter decomposition (leaf mass loss), fungal production (ergosterol buildup) and reproductive effort (released spores). Both species richness and identity significantly affected fungal biomass and conidial production (number and biomass of released spores), whereas only species identity had a significant effect on leaf mass loss. In mixed cultures, all measures of fungal functions were greater than expected from the weighted performances of participating species in monoculture. Mixed cultures outperformed the most active monoculture for biomass accumulation but not for leaf mass loss and conidial production. The three examined aspects of aquatic hyphomycete activity tended to increase with species richness, and a complementary effect was unequivocally demonstrated for fungal biomass. Our results also suggest that specific traits of certain species may have a greater influence on ecosystem functioning than species number.

show abstract

Section: Discussionmentioning

confidence: 97%

Aquatic hyphomycete diversity and identity affect leaf litter decomposition in microcosms

et al. 2006

View full text Add to dashboard Cite

show abstract

“…This indicates that temperate fungi are unlikely to be able to compete with tropical fungi in tropics. Competitive interactions are also likely to be important in determining fungal communities (Shearer and Zare 1988;Wicklow 1992;Dix and Webster 1995). Yuen et al (1999a, b) and Fryar et al (2001) showed that fungi are competitive and inhibit other fungi, probably affecting community structure.…”

Section: Species Composition and Species Abundancementioning

confidence: 97%

Variation between freshwater and terrestrial fungal communities on decaying bamboo culms

Cai

Hyde

2006

Antonie Van Leeuwenhoek

View full text Add to dashboard Cite

Fungal communities on decaying culms of a bamboo host (Phyllostachys bambusoides) from freshwater and adjacent terrestrial habitats were identified. Collections were made at Xiao Bai Long Mountain, Yiliang, Yunnan, China in the winter and summer. In each collection, 100 similar-sized bamboo culms were collected, comprising 50 submerged samples from a stream and 50 terrestrial samples from adjacent riparian vegetation. A total of 82 fungal taxa were recorded from the samples, including 30 ascomycetes and 52 anamorphic fungi. The frequency of occurrence of these fungi were recorded and the Shannon-Weiner indices (H') were applied to evaluate fungal diversity. The results showed that variation of the fungal diversity between the summer and winter collections was insignificant (0.2 < p < 0.5). Fungal diversity on submerged bamboo however, was significantly higher than that on terrestrial bamboo (p < 0.001). Further findings were that: (1) some commonly recorded freshwater and terrestrial taxa were found in both habitats, but overall there were only 15 overlapping species between the two habitats; (2) the dominant species in each habitat were considerably different, and (3) only a few fungi were dominant, while most species were rare, being recorded only once or twice. Factors responsible for the distribution patterns and variations in composition of the fungal communities are discussed.

show abstract

“…While several studies have reported inhibitory effects of aquatic hyphomycetes on bacteria and fungi (e.g. Gulis and Stephanovich, 1999;Sati and Arya, 2010) and chemical inhibition among aquatic hyphomycetes (Shearer and Zare-Maivan, 1988;Treton et al, 2004;Ferreira et al, 2010) or between aquatic hyphomycetes and cooccurring bacterial strains (Gulis and Suberkropp, 2003), the allelopathic effect of aquatic hyphomycetes on stream PP has, to our knowledge, never been studied. Our results show that most of the aquatic hyphomycete species tested (8 out of 12 tested in solid cultures) inhibited at least one diatom species.…”

Section: Discussionmentioning

confidence: 96%

Allelopathic inhibition of primary producer growth and photosynthesis by aquatic fungi

et al. 2017

View full text Add to dashboard Cite

Autochthonous primary production is generally much reduced in forested headwater streams. Several hypotheses have been proposed for explaining this observation, among them, the low light intensity, or the strong constraints exerted by stream current. Allelopathic inhibition of competitors is a common ecological process in aquatic environments. Aquatic hyphomycetes are known to chemically inhibit bacteria and other fungi (including other aquatic hyphomycetes) but a possible allelopathic effect of aquatic hyphomycetes on primary producers has never been tested. The inhibitory effect of twelve aquatic hyphomycete species was tested on three diatom species. Nine aquatic hyphomycete species exhibited anti-diatom activity. Up to 100% diatom growth inhibition was observed. Our study reveals that such allelopathic interactions might be common in streams and probably involve an array of fungal compounds. We propose that the generally reduced primary production observed in forested headwater streams is, among other factors, due to the inhibition of primary producers by allelopathic compounds released by aquatic hyphomycetes.

show abstract

In VitroHyphal Interactions Among Wood- and Leaf-Inhabiting Ascomycetes and Fungi Imperfecti from Freshwater Habitats

Cited by 36 publications

References 19 publications

Aquatic hyphomycete diversity and identity affect leaf litter decomposition in microcosms

Aquatic hyphomycete diversity and identity affect leaf litter decomposition in microcosms

Variation between freshwater and terrestrial fungal communities on decaying bamboo culms

Allelopathic inhibition of primary producer growth and photosynthesis by aquatic fungi

Contact Info

Product

Resources

About