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Gongronella pedratalhadensis, a new species of Mucorales (Mucoromycota) isolated from the Brazilian Atlantic Forest, with an identification key for the genus

Leslie Waren Silva de Freitas, Rafael José Vilela de Oliveira, Thalline Rhafhaella Cordeiro Leite, Thuong Thuong Thi Nguyen, Hyo Jin Lim, Hyang Burm Lee & André Luiz Cabral Monteiro de Azevedo Santiago

Sydowia 73: 61-68

Published online on October 1st, 2020

During a survey of Mucorales in soil from an Atlantic Forest area located in Alagoas, Brazil, a specimen of Gongronella was isolated and characterized based on morphological, physiological, and molecular data (ITS1-5.8S-ITS2 and LSU rDNA sequences). The specimen produces sporangiophores with long or short branches originating at a short or long distance from the sporangia. The branches commonly bear a sterile sporangium, which may form a new sporangiophore. The distance between the sporangium and the next lateral branch may be so reduced that some sporangia seem to be sessile. Sporangia are globose, the columellae mostly hemispherical, and most sporangiospores are bean-shaped while some are irregular. The new species grew better at 25 °C on PDA with no development at 10 and 35 °C. An identification key for the species of Gongronella is provided.

Keywords: Mucoromyceta, Mucoromycotina, phylogeny, soil, taxonomy. – 1 new species.

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