Sample Abstract 1
The Discovery of Three New Species of Absidia (Mucorales, Mucoromycota) in the Semi-arid Region of Brazil
Thalline Rafhaella Leite Cordeiro1, Catarina Letícia Ferreira de Lima1, Suzana Brito Gomes da Silva1, Francisca Robervânia Soares dos Santos1, Thuong Thuong Thi Nguyen2, Hyang Burm Lee*2, André Luiz Cabral Monteiro de Azevedo Santiago1*
1Departamento de Micologia, Universidade Federal de Pernambuco, Recife, Pernambuco, Brazil
2Environmental Microbiology Laboratory, Department of Agricultural Biological Chemistry, College of Agriculture & Life Sciences, Chonnam National University, Gwangju, Korea
Species of Absidia are commonly isolated from soil, herbivorous dung, and decaying substrates. While doing a survey on the fungi diversity in an Upland Forest soil in the Brazilian semi-arid region, three new species of Absidia were isolated. Soil collections were carried out in the Brejo’s Natural Biological Reserve, located in the state of Pernambuco, in the northeast region of Brazil. Five milligrams of soil were added to Petri dishes, containing wheat germ agar medium plus chloramphenicol. The phylogenetic relationship between the new species and related species was determined by analyzing datasets sequences from the ITS and LSU regions of rDNA. Absidia variispora sp. nov. differs from other species by forming sporangiophores unbranched, single or in whorls up to six, columellae globose or subglobose to conical with one projection generally needle-, kidney- or triangle-shaped on is surface, and varied-shaped sporangiospores. Absidia variiprojecta sp. nov. is characterized by formingsporangiophores usually unbranched, single or in whorls of up to five, columellae subglobose or subglobose to fig-shaped with one projection generally needle- or triangle-shaped, some bulbous, very rarely feather-shaped, on its surface. Sporangiospores are mostly cylindrical slightly constrict in the center. Absidia tarda sp. nov. forms sporangiophores usually unbranched, single or in whorls of up to three, columellae hemispherical or subglobose to conical with one projection filiform, bulbous, and occasionally triangle-shaped on is surface. Sporangiospores are mostly cylindrical constricted in the center, some short cylindrical. This work contributes to the existing knowledge on the Cunninghamellaceae diversity in Brazil.