@ARTICLE{TreeBASE2Ref29398, author = {Gustavo Henrique Jer?nimo and Carmen Lidia Amorim Pires-Zottarelli}, title = {Diversity and distribution of zoosporic fungi (Blastocladiomycota and Chytridiomycota) in Brazilian reservoirs}, year = {2019}, keywords = {Avachytrium, morphology, molecular phylogeny, sediment, water column }, doi = {}, url = {http://}, pmid = {}, journal = {Sydowia}, volume = {}, number = {}, pages = {}, abstract = {The zoosporic fungi (Blastocladiomycota and Chytridiomycota) represent basal lineages in Fungi kingdom, which have as similarity the production of flagellated and motile spores. The diversity of zoosporic fungi has been underexplored in lentic habitats of the tropical regions. In Brazil, the most part of the studies has been focusing on diversity of these groups in lotic habits, leading a gap in our understanding of the diversity and ecological role of these organisms in these specific environments. The aim of this study was to elucidate the diversity and distribution of these phyla in the water column and sediment samples of three tropical reservoirs, located in Brazilian Atlantic rainforest areas, allying the morphologic and phylogenetic approaches. Samples of different depths of water column (surface, medium depth and bottom) and surface sediment were collected and baited with substrates to allow the fungi development. We calculated the frequency of occurrence and abundance for each taxon during the study. The taxa purified in agar medium were included in phylogenetic reconstructions to corroborate their morphologic identification. In total, we identified 24 taxa (12 at a specific level) and 10 strains were purified and inserted in phylogenies at order level. In general, the zoosporic fungi presented a higher species richness and abundance in sediment. The species Asterophlyctis sarcoptoides, Cladochytrium replicatum, Nowakowskiella crenulata and N. hemisphaerospora were the taxa more frequent and abundant, during the study. The genera Avachytrium is recorded for the first time in Brazil. The zoosporic fungi, are prevalent in freshwater reservoirs and play major roles in regulating the flow of organic carbon and nitrogen, however the diversity of sediment fungi is only beginning to be revealed in recent years. To close this gap, this study presents the more comprehensive dataset on fungal community composition from the sediment of Brazilian reservoirs and emphasizing the importance of understanding the diversity of zoosporic fungi in this compartment. } }

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