Molecular approaches applied to aquatic hyphomycetes

Bärlocher, Feli×

doi:10.1016/j.fbr.2007.02.003

Cited by 38 publications

(28 citation statements)

References 53 publications

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“…More detailed studies, including pure culture (MARVANOVÁ and BÄRLOCHER, 2001) and molecular studies (BÄRLOCHER, 2007) will be essential to establish the generality of these preliminary conclusions.…”

Section: Discussionmentioning

confidence: 94%

Leaf Decomposition in a Mountain Stream in the Sultanate of Oman

Alriyami

Victor

Seena

et al. 2009

International Review of Hydrobiology

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Decomposition of Juglans regia leaves was studied in fine and coarse mesh bags in a permanent mountain stream in Oman. A rapid initial mass loss, attributed to leaching, was followed by a more gradual decline. Daily exponential decay rates (k) calculated over 32 days were 0.011 (fine mesh litter bags) and 0.014 (coarse mesh litter bags). The difference between bag types was not significant, suggesting limited impact of leaf-shredding invertebrates. Ergosterol levels on leaves from fine mesh bags peaked at 0.3 mg g -1 AFDM after 16 days of stream exposure. During the experimental period, which followed the annual leaf fall, the concentration of aquatic hyphomycete conidia in the stream varied between 82 and 1362 l -1 . Based on the morphology of conidia found in the water column or released from leaves, we identified 14 species of aquatic hyphomycetes. Tetracladium apiense was the most common taxon (62.2% of conidia in water column during the field experiment). Three other Tetracladium species contributed another 8%. Plating out leaf particles yielded common epiphytic taxa such as Alternaria sp., Aureobasidium pullulans and Phoma sp.The measured metrics of leaf decay in this desert stream fall within the range of values observed in temperate and tropical streams, with clear evidence for an early leaching phase, and no evidence of a strong impact of leaf shredders. The community of aquatic hyphomycetes appears impoverished.

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Section: Discussionmentioning

confidence: 94%

Leaf Decomposition in a Mountain Stream in the Sultanate of Oman

Alriyami

Victor

Seena

et al. 2009

International Review of Hydrobiology

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“…More interesting results may emerge by sampling selected streams over one or more seasonal cycles with water filtration to connect Ingoldian fungal populations in water with those in wood. It would also be possible to extract and analyze whole DNA from freshly removed and damp chamber-incubated wood samples to establish which fungi are present (Duong et al 2006;Bärlocher 2007;Hyde and Soytong 2008;Seena et al 2008).…”

Section: Roles Of Lignicolous Versus Ingoldian Fungi and Future Studiesmentioning

confidence: 99%

Wood-inhabiting filamentous fungi in 12 high-altitude streams of the Western Ghats by damp incubation and bubble chamber incubation

2010

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The diversity and distribution of fungi on naturally submerged wood from 12 high-altitude streams of the Western Ghats in India were studied by damp chamber incubation and bubble chamber incubation. The damp chamber incubation of wood samples yielded 29 fungal taxa (17 anamorphs, 11 ascomycetes, 1 basidiomycete). Acrogenospora sphaerocephala, Canalisporium sp., Dictyosporium heptasporum, Leptosphaeria ginimia, L. typharum, Massarina australiensis, Sporoschisma saccardoi, and Sporoschismopsis australiensis were the most common taxa and were widely distributed on wood in streams of the Western Ghats. The bubble chamber incubation of bark and cambium revealed 30 aquatic hyphomycetes (bark, 28; cambium, 18). Anguillospora longissima, Flagellospora curvula, F. penicillioides, and Lunulospora curvula were most common in bark as well as cambium. There was only 1 species (Helicomyces roseus) that was identified following both incubation methods, indicating that methodology influences the detection of fungal communities. It is recommended that studies on freshwater fungi should incorporate both damp incubation and bubble chamber techniques.

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“…Chytridiomycota), Ascomycota and Basidiomycota, although fungi are considered cosmopolitan (Tsui and Hyde 2003). Recent surveys have recorded a great diversity of fungi in various aquatic ecosystems (Bärlocher et al 2006;Bärlocher 2007;Lefèvre et al 2007Lefèvre et al , 2008Burgaud et al 2009;Jorgensen and Stepanauskas 2009;Rasconi et al 2009). More than 600 species of freshwater fungi have been described, including about 300 species of anamorphic fungi and 300 species of Ascomycota followed by few Basidiomycota and Chytridiomycota species (Wong et al 1998;Nikolcheva and Bärlocher 2004;Shearer et al 2007;Gulis et al 2008), but new taxa are being discovered every year at an increasing rate (Letcher et al 2008;Raja and Shearer 2008;Hoffman et al 2008).…”

Section: Diversitymentioning

confidence: 99%