Aquatic Hyphomycetes from Leaf Litter in Brazilian UrbanWaters

2014 ◽  
pp. 83-104 ◽  
Keyword(s):  
Leaf Litter ◽  
Aquatic Hyphomycetes

Functional redundancy in leaf-litter-associated aquatic hyphomycetes: Fine sediment alters community composition but hardly decomposer activity

2019 ◽  
Vol 105 (1-2) ◽  
pp. 44-51 ◽  
Author(s):  
Aingeru Martínez ◽  
Ana V. Lírio ◽  
Isabel Febra ◽  
João Rosa ◽  
Ana L. Gonçalves ◽  
...  
Keyword(s):  
Leaf Litter ◽  
Community Composition ◽  
Functional Redundancy ◽  
Fine Sediment ◽  
Aquatic Hyphomycetes

Fungi and cellulolytic activity associated with decomposition of Bauhinia purpurea leaf litter in a polluted and unpolluted Hong Kong waterway

1992 ◽  
Vol 70 (5) ◽  
pp. 1071-1079 ◽  
Author(s):  
D. W. T. Au ◽  
I. J. Hodgkiss ◽  
L. L. P. Vrijmoed
Keyword(s):  
Leaf Litter ◽  
Geotrichum Candidum ◽  
Aquatic Hyphomycetes ◽  
Cellulolytic Activity ◽  
Mucor Racemosus ◽  
Trichoderma Spp ◽  
Complementary Sequence ◽  
Forest Stream ◽  
Bauhinia Purpurea

A survey of fungal succession on decomposing Bauhinia purpurea L. leaves in the unpolluted Tai Po Kau Forest Stream (TPKFS) and the animal waste polluted Lam Tsuen River (LTR) was carried out during the winter of 1988 and the summer of 1989. In situ cellulolytic activity of the TPKFS leaf litter was also investigated. Most of the 28 aquatic hyphomycete species found were cosmopolitan or frequently reported in temperate regions. Clavariopsis aquatica De Wildeman, Lunulospora cymbiformis Miura, and Flagellospora penicillioides Ingold were the dominant species at both sites. Among the 49 geofungi species recorded, lymaphilic species were commonly observed in the polluted LTR (e.g., Geotrichum candidum Link ex Leman, Fusarium oxysporum Schlecht, and Mucor racemosus Fres.) and lymaxenes in the TPKFS (e.g., Humicola spp., Trichoderma spp. and Gliocladium roseum Bain.). Species richness of aquatic hyphomycetes was higher in the TPKFS (27 species) than in the polluted LTR (14 species), whereas for the associated geofungi, it was higher in the LTR (35 species) than in the TPKFS (28 species). Conidial production was also higher in the TPKFS. Aquatic hyphomycetes and geofungi showed a complementary sequence of dominance in winter and summer, respectively, in the clean TPKFS. Higher cellulolytic activity occurred in the winter than the summer leaf litter. Key words: aquatic hyphomycetes, geofungi, leaf litter, pollution, cellulolytic activity.

Decomposition of native leaf litter by aquatic hyphomycetes in an alpine stream

2011 ◽  
Vol 62 (7) ◽  
pp. 841 ◽  
Author(s):  
Stephanie G. Suter ◽  
Gavin N. Rees ◽  
Garth O. Watson ◽  
Phillip J. Suter ◽  
Ewen Silvester
Keyword(s):  
Leaf Litter ◽  
Aquatic Hyphomycetes ◽  
Fungal Communities ◽  
Particulate Carbon ◽  
Eastern Australia ◽  
Alpine Stream ◽  
Alpine Streams ◽  
Leaf Bags ◽  
Alpine Environments ◽  
Stream Food Webs

Despite the recognised significance of hyphomycetes in the degradation of leaf litter in streams, few studies have been carried out in alpine environments and none in Australian alpine streams. We hypothesised that the fungal communities responsible for leaf decomposition would change over immersion time, and would respond differently at different sites and on different types of vegetation. Leaf bags containing Epacris glacialis (F. Muell.), Eucalyptus pauciflora (Sieber ex. Spreng) and Eucalyptus delegatensis (R.T. Baker) were deployed at different sites in a stream in the Victorian Alpine National Park, south-eastern Australia. Leaf colonisation was delayed for 2 weeks and decay constants for E. pauciflora and E. delegatensis were 0.004–0.005 and 0.006 respectively. Maximum fungal biomass on leaves was similar to that in previous published studies, whereas sporulation rates were two or three orders of magnitude lower, indicating a reduced reproductive effort. Sporulation and DNA-based studies combined showed that fungal communities on the decomposing leaf material changed over time and exhibited significant preferences for leaf type and study site. We have shown that aquatic hyphomycetes can degrade physically tough leaves of Australian alpine plant species, potentially contributing to pathways for particulate carbon to enter alpine-stream food webs.

Xylomyces (Aliquandostipitaceae, Jahnulales) freshwater hyphomycetes from the Brazilian Amazon

Nova Hedwigia ◽  
2020 ◽  
Vol 111 (1) ◽  
pp. 187-197
Author(s):  
Letícia Martins Krause ◽  
Patrícia Oliveira Fiuza ◽  
Flavia Rodrigues Barbosa
Keyword(s):  
Leaf Litter ◽  
Relative Frequency ◽  
New Record ◽  
New Records ◽  
Brazilian Amazon ◽  
Aquatic Hyphomycetes ◽  
Submerged Wood ◽  
Relative Occurrence ◽  
Geographic Distributions ◽  
Amazonian Region

Xylomyces is characterized by the absence of conidiomata, conidiophores, conidiogenous cells, and conidia. The genus only produces chains of large, dark, thick-walled, dry, multiseptate chlamydospores with or without constricted septa. During an investigation of aquatic hyphomycetes on submerged wood and leaf litter in a stream in the Brazilian Amazon, we found four of the accepted eight species of Xylomyces. Xylomyces acerosisporus, X. aquaticus, and X. foliicola are new records to the Brazilian Amazon, while X. giganteus is a new record for the southern Amazonian region. Xylomyces giganteus showed the highest relative frequency and occurrence and X. foliicola displayed an intermediate relative frequency and occurrence. Xylomyces acerosisporus and X. aquaticus showed the lowest relative frequency, while X. acerosisporus indicated the lowest relative occurrence. Descriptions, notes, geographic distributions, and illustrations are presented for all species of Xylomyces found in this study. We also provide a key and a table for all species.

Aquatic hyphomycetes on leaf litter in and near a stream in Nova Scotia, Canada

1993 ◽  
Vol 97 (12) ◽  
pp. 1530-1535 ◽  
Author(s):  
K.R. Sridhar ◽  
Felix Bärlocher
Keyword(s):  
Nova Scotia ◽  
Leaf Litter ◽  
Aquatic Hyphomycetes

scholarly journals Enzyme Profile of Aquatic Hyphomycetes Isolated from the Streams of Kodagu District of Karnataka

2002 ◽  
Vol 1 (1) ◽  
pp. 52-68
Author(s):  
Soosamma M.
Keyword(s):  
Leaf Litter ◽  
Fold Increase ◽  
Aquatic Hyphomycetes ◽  
Palatable Food ◽  
Degrading Enzyme ◽  
Enzyme Profile ◽  
Degrading Enzymes ◽  
Pectinase Production

Aquatic hypomycetes, isolated from the streams of Bloomfields, Somwarpet of Kodagu district, are capable of secreting an array of wall degrading enzyme, which transform the leaf litter into more palatable food for the detrivores. The objectives of the present study was to check the ability of these fungi in producing wall degrading enzymes invitro. Only two of the fungi namely Acremonium sps. and a non sporulating unidentified white colony producing sps. wre used for the Present study. These were grown on media containing cellulose, starch and pectin as substrate and their ability to produce cellulose, anylase, invertase and pectinase studied. Depending upon the availability of the substrate these fungi were able to produce varying conc. of enzymes. It was very interesting to note that the non-sporulating sps. showed a nine fold increase in pectinase production compared to Acremonium sps.

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