New species and new records of conidial fungi from submerged decayed leaves in Brazil

• Ano de defesa: 2018
• Autor(a) principal: Freitas, Mayara Luisa Rocha
• Tipo de documento: Dissertação
• Tipo de acesso: Acesso aberto
• Idioma: eng
• Instituição de defesa: Universidade Federal de Viçosa
• Palavras-chave em Português: Fungos imperfeitos; Serapilheira; Cladosporium sp.; Microbiologia
• Link de acesso: http://www.locus.ufv.br/handle/123456789/21429

Fungi are recognized as cosmopolitan and carry out various ecological functions in the ecosystem, including the decomposition of organic matter. They recycle the litter present in the soil, contributing to mineralization of nutrients. In aquatic environments, this saprophytic role contributes to increase the palatability of plant material used by organisms of other trophic levels. Several representatives of the Fungi kingdom are present in the aquatic environments and, among these, the conidial fungi. In the Atlantic Forest biome, studies on fungi in the aquatic environment are still scarce. The aim of this work was to carry out a taxonomic and phylogenetic study of the conidial fungi species associated with decomposed plant substrates submerged in water bodies of three forest fragments located in the Serra do Brigadeiro, Minas Gerais. The collected samples were taken to the Laboratório de Micologia e Etiologia de Doenças Fúngicas de Plantas of Universidade Federal de Viçosa, where the isolations and identification of associated fungi were made. The genus Cladosporium was the most abundant fungal group. By means of the morphology of vegetative and reproductive structures of this fungus, the growth of in vitro cultures and phylogenetic analyzes, it was concluded that all the isolates belong to the Cladosporium cladosporioides complex, two species reported for the first time in Brazil and a new species be proposed. This study contributes to increasing the knowledge of the diversity of conidial fungi in aquatic environments in the Brazilian Atlantic Forest and emphasizes the importance of exploring new habitats in mycological researches.