Contributions to knowledge of Ingoldian fungi in Pampas region. 12th Symposium for European Freshwater Sciences Virtual Conference on the 25th -30th July 2021 Pág 185.

KRAVETZ, S.,; GONZÁLEZ.,B. ; HUTA, F.,; GIORGI, A

Dublin

Simposio; 12th Symposium for European Freshwater Sciences; 2021

European Society of Freshwater Sciences

Contributions to knowledge of Ingoldian fungi in Pampas regionSebastian Kravetz1,2, Doctora Beatriz González1, Alumna Florencia Huta1, Dr Adonis Giorgi1,21Universidad Nacional De Luján, 2Instituto de Ecología y Desarrollo Sustentable5F_SS09 Aquatic fungi: bringing a key freshwater microbial group into the spotlight & RS01 Advances in freshwater monitoring, July 27, 2021, 13:15 - 14:45The Pampas region is an extensive plain territory, with rich humus soils, temperate and humid climate. The watercourses have high concentrations of phosphates, nitrates, dissolved oxygen and conductivity, neutral to alkaline pH, low speeds current, presence of macrophytes and absence of trees in the banks, which is being modified by the invasion of woody exotic plants. In order to characterize the assemblages of Ingoldian fungi in pampas region, plankton samplings were carried out in 36 sites of 21 streams. Also samples of leaf litter colonization experiments of Gleditsia triacanthos, Populus nigra and Bromus unioloides in 12 sites. The plankton samples were taken sub-surface in 100 meter sections and filtered with acetate membranes (5 μm pore). The leaf litter was incubated and removed in triplicate in increasing periods, and the species richness and sporulation rates in liquid medium were evaluated. We registered 75 species of Ingoldian fungi, of which 50 are first report in Argentina. The genera with highest species number were Tetracladium (8), Anguillospora (6), Triscelophorus (4), Lemonniera, Tetraploa, Tripospermum and Tricladium (3). The distribution range species has been very wide, being observed in least 50% of streams. High sporulation rates were registered in sites with invasion of Gleditsia triacanthos and low sporulation rates when there was predominance of herbaceous in the banks. It is concluded that in Pampas region, Ingoldian fungi have a wide distribution. In addition, they have the ability.